US20060032795A1 - Single-use long-life faucet-mounted water filtration devices - Google Patents
Single-use long-life faucet-mounted water filtration devices Download PDFInfo
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- US20060032795A1 US20060032795A1 US11/256,403 US25640305A US2006032795A1 US 20060032795 A1 US20060032795 A1 US 20060032795A1 US 25640305 A US25640305 A US 25640305A US 2006032795 A1 US2006032795 A1 US 2006032795A1
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- filtration device
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Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
- C02F1/003—Processes for the treatment of water whereby the filtration technique is of importance using household-type filters for producing potable water, e.g. pitchers, bottles, faucet mounted devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D27/00—Cartridge filters of the throw-away type
- B01D27/005—Making filter elements not provided for elsewhere
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D27/00—Cartridge filters of the throw-away type
- B01D27/08—Construction of the casing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D27/00—Cartridge filters of the throw-away type
- B01D27/10—Safety devices, e.g. by-passes
- B01D27/101—Filter condition indicators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
- B01D35/04—Plug, tap, or cock filters filtering elements mounted in or on a faucet
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
- B01D35/143—Filter condition indicators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/30—Filter housing constructions
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/44—Time
- C02F2209/445—Filter life
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2307/00—Location of water treatment or water treatment device
- C02F2307/06—Mounted on or being part of a faucet, shower handle or showerhead
Definitions
- the field of the invention is water filtration devices.
- Water is supplied from municipal water systems (many of which are aging), private water systems and wells in the United States. Frequently, this water has poor taste, particulates, unwanted odors and in many cases contaminants contained in it. Municipal water is commonly treated with chlorine to eliminate bacterial contaminants. Chlorine adds what most people feel is an unpleasant taste and odor. Water conditions vary greatly according to the geographic area and therefore travelers may also experience these problems as they visit hotel and motel rooms around the country. It is desirous to remove bad tastes, odors, sediment and contaminants before ingesting the water or using it for cooking food.
- Water treatment devices of many varieties have proven effective in accomplishing water purification. Generally these devices work through chemical and mechanical actions that remove contaminants and impurities from water. These filters have a finite life. Sediment can eventually clog a filter and chemical reactions realized through adsorption (carbon media) and ion exchange (cation resin) have a limited capacity.
- U.S. Pat. No. 5,989,425 to Yonezawa et al. discloses a multi-way valve and water purifier.
- the multi-way valve is disclosed as a small-sized one which may be used with a small-sized water purifier.
- the device disclosed in the '425 patent is a faucet mounted filter and it is designed for removing and exchanging valve bodies.
- U.S. Pat. No. 5,017,286 toezeman and United States Pat. No. Re. 35667 to Heiligman disclose a vertical filter enclosed in a housing and the housing is supported by a duct.
- the vertical filter may be permanently secured to the filter by hot melt adhesive which renders the filter non-removable. Further, the vertical filter may be pre-wrapped with a porous paper pre-filter.
- the device disclosed in the '286 patent is a faucet mounted filter. If the filter is glued to the filter housing the filter housing must be removed and discarded together with the filter. A new filter housing (and filter) must then be mounted onto the duct of the diverter valve each time the filter housing is replaced. This involves time consuming labor in the case of each embodiment disclosed in the '286 patent.
- the filter housing is secured by a retaining clip.
- the male duct of the filter housing is press-fit into an opening in the diverter valve.
- the male duct of the filter housing may be affixed to the diverter valve by a U-clip, cotter pin or the like.
- the filter housing as disclosed in the '286 patent is disclosed as residing vertically in front of the faucet. In short, it is not a simple matter to change the filter housing of the device disclosed in the '286 patent.
- U.S. Pat. No. 5,527,451 to Husinee et al. discloses a faucet mounted filter utilizing a replacement filter cartridge.
- the replacement filter cartridge resides within a larger rotatable housing which channels water flow either into the filter or through the diverter valve assembly.
- Husinee et al. also discloses a very complicated flow totalization mechanism which includes porting water to a turbine driven mechanism prior to filtering thereof
- U.S. Pat. No. 6,571,960 B2 to Williamson et al. discloses a faucet-mounted water filtration device whose filter housing includes a valve therein and whose filter housing extends longitudinally rearwardly from the point of attachment to the faucet.
- the filters in Williamson et al. are replaceable filter cartridges.
- U.S. Pat. No. 6,284,129 B1 to Giordano et al. discloses a rotating a magnetized impeller actuating a reed switch.
- the devices disclosed therein are designed for disassembly of some sort as a matter of maintenance of the filtration device. This requires labor and attendant time. Complex flow totalization mechanisms such as the one disclosed in Husinee et al. '451 present maintenance problems. The need to change the filter and/or the filter housing and/or the diverter valve all require labor and attendant time.
- the devices disclosed therein are designed for disassembly of some sort as a matter of maintenance of the filtration device.
- Filtration devices customarily employ replaceable filter cartridges of some type. These arrangements require either a coupling arrangement for attaching and detaching a replacement filter cartridge or a large chamber to entirely enclose the replacement filter cartridge. Both approaches require additional components and materials that add to the manufactured cost and complexity of the device.
- each of the foregoing disclosures by requiring the replacement of the filter element, cause great inconvenience to the user by having him search for and procure replacement filter elements at considerable cost. This arrangement, while lucrative for the manufacturer, is a well documented nuisance for the consumer.
- a small faucet-mounted water filtration device which is a single-use, long-life water filtration device which includes an indicator of filter performance.
- single use it is meant that it is discarded when its performance indicator reveals that the efficacy of the filter has been diminished.
- the filter housing of the water filtration device mounted behind the connection to the faucet to enable full access to the sink basin beneath the faucet.
- a single-use faucet-mounted water filtration device is provided.
- the device is of uni-body construction and has no removable or replaceable parts yet provides long life operation. This arrangement makes the device more convenient to use compared with other devices that require frequent replacement of filter cartridges.
- the device is constructed with a minimum of components making it relatively small in size and less costly to manufacture. While compact, the device is able to hold enough filter media to allow for long life operation.
- the life of the water filtration device is dependent upon the type of filter media used, sizing and geometry of the filter media, and the sizing and geometry of water flow paths. For instance, water filtration devices having a useful life of 300 gallons or more can be made utilizing the teachings of the instant invention. Water filtration devices having useful lives smaller than 300 gallons may also be made utilizing the teachings of the instant invention. Performance indications as a function of integrated flow are indicated by a light emitting diode.
- a single-use device is provided for use in a kitchen sink and a device is provided for use in a bathroom sink.
- the bathroom embodiment of the single-use faucet filter is scaled to the small size of bathroom sinks and therefore practical for use in bathrooms.
- the bathroom filter device allows residential users to have the benefit of filtered water in close proximity to the bedroom avoiding the inconvenience of going to a kitchen sink for water during the night.
- the bathroom device is small and disposable it may be taken with a traveler and installed in a hotel or motel room. Further, as travelers readily discern the differences between water and its tastes from one place to another it is highly desirable that the water filter be portable.
- the invention includes a front housing connectable to a water faucet and a filter housing having an inlet and an outlet. An end cap of the filter housing completes the filter housing.
- the front housing is non-removably affixed to the filter housing and the water filter is non-removably contained within the water filter housing.
- the water filter housing includes a chamber in communication with the water filter.
- the filter is preferably activated carbon and includes a filter pre-wrap. Other filter media may be used.
- the outlet resides in the chamber. Alternatively, a second outlet may also reside in the chamber in the embodiment of the bathroom filter.
- the single use water filtration device is small.
- the embodiment designed for bathroom use has a filter diameter less than or equal to 1.6 inches.
- the embodiment designed for kitchen use has a filter diameter less than or equal to 2.2 inches.
- the water filtration devices disclosed herein, namely the bathroom and kitchen embodiments, reside substantially rearwardly with respect to the water faucet. Other diameters and sizes of the water filtration devices disclosed herein may be made using the teachings hereof.
- the filter includes ends thereof each secured to an end cap.
- the end caps have peripheral seal portions which seal against the interior of the filter housing.
- a housing end cap is ultrasonically welded to the filter housing.
- Other welding methods such as microwave, radio frequency (RF), heat and induction welding may be employed to weld various portions of the water filtration devices disclosed herein together.
- RF radio frequency
- the second outlet includes a valve seat and a valve interposed in the filter housing being operable against the valve seat of the second outlet for controlling the flow out of the second outlet.
- the valve includes a plunger having a foot and an elastomeric ball valve or boot residing over the foot. The foot of the plunger and the elastomeric ball valve reside within the housing.
- a handle is pivotally connected to the end cap of the filter housing and engages the plunger such that when the plunger is depressed the elastomeric ball valve moves inwardly toward the center of the housing and away from the seat of the second outlet.
- a fountain head is rotatably secured in the plunger and lever for communication with a passageway in the plunger.
- a spring is interposed between the plunger and the filter housing urging the elastomeric ball valve against the valve seat of the second outlet.
- a front housing having first and second passageways is non-removably affixed to the filter housing.
- the front housing includes a directional valve residing within the front housing and movable therein for directing water into the filter for filtering or through the front housing for direct use of the unfiltered water.
- the filter housing includes three protrusions which interengage corresponding apertures in the front housing.
- the front housing also includes a continuous periphery welded to the filter housing by one of the aforementioned methods.
- the filter housing includes a recess whose shape is the reciprocal of the continuous periphery of the front housing and the continuous periphery of the front housing fits snugly within the recess in the filter housing.
- the end cap of the filter housing is welded to the filter housing. Three parts or pieces, the filter housing, the front housing and the end cap of the filter housing are welded together to provide a unibody or integral construction.
- a gate having a magnet affixed therein resides in the chamber and swings between a first position and a second position. Spacers extending from the end cap serve to ensure that the gate remains in alignment with respect to the earth. These spacers also serve to ensure that the filter subassembly remains in proper position.
- the first end cap of the filter includes a first hinge member and the gate includes a second hinge member which coacts with the first hinge member to enable the gate to swing between first and second positions.
- a gate position sensor resides in a dry portion of the end cap of the water filter housing and is actuated when the gate swings to the second position and the magnet is in proximity to the sensor.
- An electronic package and a light emitting diode reside in the dry portion of the end cap of the water filter housing.
- the electronic package outputs a signal to the light emitting diode which indicates the performance of the water filtration device.
- the electronic package outputs three discrete signals to the light emitting diode to indicate three performance levels of the filter.
- a method of making a water filtration device comprises the steps of: attaching end caps to the filter; inserting the filter within a filter housing; aligning the filter within the filter housing; inserting a portion of a gate into corresponding receptacles on one end of one of the end caps previously affixed to the filter; inserting a sensor and electronic package into an open end of a filter housing end cap; affixing the filter housing end cap to the filter housing forming a chamber between a closed end of the filter housing end cap and the one end of one of the end caps; and, affixing a front housing to the filter housing.
- the step of attaching end caps to said filter may be performed with adhesive.
- the steps of affixing the end cap of the filter housing, affixing the filter housing end cap to the filter housing and affixing the front housing to the filter housing may be performed by an ultrasonic welding process or one of the other welding processes identified herein.
- FIG. 1 is an exploded assembly view of a first embodiment of the water filtration device.
- FIG. 2 is a perspective view of a first embodiment of the water filtration device.
- FIG. 2A is a perspective view of a first embodiment of the water filtration device with the handle of the valve pulled forward.
- FIG. 3 is a cross-sectional view of the first embodiment of the water filtration device taken along the lines 3 - 3 of FIG. 2 .
- the filter is not operating as no water is being directed into it.
- FIG. 3A is an enlargement of a portion of FIG. 3 .
- FIG. 3B is a cross-sectional view of the first embodiment of the water filtration device with the fountain lever depressed and with water flowing through the filter.
- FIG. 3C is an enlargement of a portion of FIG. 3B .
- FIG. 3D is a cross-sectional view of the first embodiment of the water filtration device similar to FIG. 3 with an O-ring used as an additional seal for the filter subassembly.
- FIG. 4 is an enlargement of the front housing of the first embodiment of the water filtration device.
- FIG. 4A is a cross-sectional view of the front housing taken along the lines 4 A- 4 A of FIG. 4 .
- FIG. 4B is a cross-sectional view of the front housing taken along the lines 4 B- 4 B of FIG. 4 .
- FIG. 4C is a top view of the front housing of the first embodiment.
- FIG. 4D is an enlarged rear perspective view of the front housing of the first embodiment.
- FIG. 4E is a cross-sectional view of the rotatable collar (faucet adapter) and the lock collar which is secured to the front housing.
- FIG. 4F is a cross-sectional view of the aerator mounted into the front housing.
- FIG. 4G is a cross-sectional view taken along the lines 4 G- 4 G of FIG. 2 with the flow diverter valve inserted in the front housing in a first position, bypass position.
- FIG. 4H is a cross-sectional view taken along the lines 4 H- 4 H of FIG. 2A with the flow diverter valve inserted in the front housing in a second position which directs flow into the filter.
- FIG. 5 is a front perspective view of the filter housing of the first embodiment of the water filtration device.
- FIG. 5A is a front view of the filter housing of the first embodiment of the water filtration device.
- FIG. 5B is a cross-sectional view of the filter housing taken along the lines 5 B- 5 B of FIG. 5A .
- FIG. 5C is a cross-sectional view of the filter housing taken along the lines 5 C- 5 C of FIG. 5A .
- FIG. 5D is a cross-sectional view of the filter housing taken along the lines 5 D- 5 D of FIG. 5A .
- FIG. 5E is a bottom view of the filter housing of the first embodiment of the water filtration device.
- FIG. 5F is a left side view, the open end view, of the filter housing of the first embodiment of the water filtration device.
- FIG. 6 is a perspective view of the valve and its handle which are used in both the first embodiment and the second embodiment of the water filtration device.
- FIG. 6A is a perspective view of the other side of the valve and its handle of FIG. 6 .
- FIG. 7 is a perspective view of the electronic package (electric circuit), sensor and light emitting diode used in the first and second embodiments of the water filtration device.
- FIG. 7A is a side view of the electronic package (electric circuit), sensor and light emitting diode package of FIG. 7 .
- FIG. 8 is a side view of the housing end cap.
- FIG. 8A is a perspective view of the other side, i.e., the wetted side, of the housing end cap illustrated in FIG. 8 .
- FIG. 9 is a front view of the gate of the first embodiment.
- FIG. 9A is a cross-sectional view taken along the lines 9 A- 9 A of FIG. 9 .
- FIG. 10 is a front view of the left end cap of the filter.
- FIG. 10A is cross-sectional view of the left end cap of the filter taken along the lines 10 A- 10 A of FIG. 10 .
- FIG. 11 is a perspective view of the plunger used in conjunction with the lever and elastomeric ball valve.
- FIG. 11A is a another perspective view of the plunger used in conjunction with the lever and elastomeric ball valve.
- FIG. 11B is a top view of the plunger.
- FIG. 11C is a cross-sectional view of the plunger taken along the lines 11 C- 11 C of FIG. 11B .
- FIG. 11D is a cross-sectional view taken along the lines 11 D- 11 D of FIG. 11B .
- FIG. 12 is a front view of the ball valve.
- FIG. 12A is a cross-sectional view taken along the lines 12 A- 12 A of FIG. 12 .
- FIG. 13 is a top view of the lever used to operate the plunger of the first embodiment.
- FIG. 13A is a cross-sectional view of the lever taken along the lines 13 A- 13 A of FIG. 13 .
- FIG. 13B is a perspective view of the underside of the lever of FIG. 13 .
- FIG. 14 is a front view of the fountain head.
- FIG. 14A is a cross-sectional view taken along the lines 14 A- 14 A of the fountain head of FIG. 14 .
- FIG. 15 is an exploded perspective view of a second embodiment of the invention.
- FIG. 16 is a perspective view of a second embodiment of the water filtration device.
- FIG. 16A is a perspective view of a second embodiment of the water filtration device with the valve handle pulled forward.
- FIG. 17 is a cross-sectional view of the second embodiment of the water filtration device taken along the lines 17 - 17 of FIG. 16 .
- FIG. 17A is a cross-sectional view of the second embodiment of the water filtration device similar to FIG. 17 except the gate is shown rotated clockwise in the flow condition.
- FIG. 18 is a perspective view of the front housing of the second embodiment.
- FIG. 18A is a cross-sectional view taken along the lines 18 A- 18 A of FIG. 18 .
- FIG. 18B is a cross-sectional view taken along the lines 18 B- 19 B of FIG. 18 .
- FIG. 18C is a top view of the front housing of the second embodiment.
- FIG. 18D is a rear perspective view of the front housing of the second embodiment of the water filtration device.
- FIG. 18E is a cross-sectional taken along the lines 18 E- 18 E of FIG. 16 with the flow diverter valve inserted in the front housing in a first position, bypass position.
- FIG. 18F is a cross-sectional view taken along the lines 18 F- 18 F of FIG. 16A with the flow diverter valve inserted in the front housing in a second position which directs flow into the filter.
- FIG. 19 is a front perspective view of the filter housing of the second embodiment of the water filtration device.
- FIG. 19A is a bottom view of the of the filter housing of the second embodiment of the water filtration device.
- FIG. 19B is a cross-sectional view taken along the lines 19 B- 19 B of FIG. 19A .
- FIG. 19C is a cross-sectional view taken along the lines 19 C- 19 C of FIG. 19C .
- FIG. 19D is a left side view, the open end view, of the filter housing of the second embodiment of the water filtration device.
- FIG. 20 is a front side view of the end cap of the housing of the second embodiment of the water filtration device.
- FIG. 20A is a right side view of the end cap of FIG. 20 .
- FIG. 20B is a perspective view of the end cap of FIG. 20 .
- FIG. 20C is a view of the left side of the end cap of FIG. 20 .
- FIG. 20D is another perspective view of the end cap.
- FIG. 1 an exploded assembly view of a first embodiment of the water filtration device 100 , the various components of the single-use faucet mounted water filter are shown.
- Filter 113 is illustrated having a longitudinal bore 129 therethrough.
- Filter 113 is illustrated without a filter pre-wrap in this view but such a pre-wrap 495 is specifically within the scope of this invention and is illustrated in FIGS. 4G and 4H .
- the filter is preferably a carbon block but may be a fiber bundle or granular activated carbon. Further, the carbon block may include bacteriastic materials, ion exchange resins and zeolites to assist in its filtration activity.
- End caps 114 and 115 are affixed to said filter with a hot melt adhesive applied to the entire mating surfaces of end caps 114 and 115 including but not limited to the dowel portions thereof such as dowel 130 A on right end cap 130 .
- a hot melt adhesive applied to the entire mating surfaces of end caps 114 and 115 including but not limited to the dowel portions thereof such as dowel 130 A on right end cap 130 .
- gate hinges 132 , 132 A To ensure that the subassembly is properly oriented, gate hinges 132 , 132 A must be aligned in relation to a mark 160 on the filter housing as the subassembly is inserted into the filter housing 101 . Gate hinges 132 , 132 A are properly positioned when their axis is parallel to the earth or parallel to a tangent of the earth's surface.
- the left side view (open end view) of the filter housing 101 of the first embodiment of the water filtration device, the concave right side wall 508 of the filter housing 101 is illustrated along with molded ribs 515 .
- the diameter of the filter housing 101 is approximately 1.6 inches and the length of the filter housing as viewed, for example, in FIGS. 5 and 5 A, is approximately 4.2 inches.
- Other dimensions may be utilized in the construction of water filtration devices as taught herein without departing from the spirit and scope of the invention.
- Gate 118 is rotatably affixed to gate hinges 132 , 132 A by inserting prongs or knobs 133 , 133 A in the hinges. Knobs or prongs 133 , 133 A are snap-fit into apertures in the hinges 132 , 132 A enabling rotation of the gate 118 when water pushes against it as it exits the filter. As will be explained in more detail hereinafter, gate 118 swings (rotates) in a clockwise direction about its axis of rotation (see FIGS. 3B and 3C ) upon the application of pressure caused by water flow through the filter 113 and the longitudinal bore 129 therein.
- gate 118 includes a magnet 117 which is press fit into a recess 134 in the gate and hermetically sealed with either hot melt adhesive or potting compound.
- FIG. 3 is a cross-sectional view 300 of the first embodiment of the water filtration device taken along the lines 3 - 3 of FIG. 2 . Presence or absence of magnet 117 is sensed by reed switch (reed relay) 135 . Housing end cap 102 includes spacers 142 and 143 . See FIG. 8A , a perspective view of the end cap to best view the spacer 142 which is not well illustrated in the exploded assembly view of FIG. 1 .
- Spacers 142 , 143 assist in correctly spacing the housing end cap 102 with respect to the left end cap 114 of the filter. Once housing end cap 102 is inserted into the filter housing 101 , spacers 142 , 143 ensure that the filter subassembly comprising the filter 113 , left end cap 114 and right end cap 115 does not migrate leftwardly (See FIG. 3 ) too far and remains in proximity to the mold ribs 515 of the interior of the housing. Housing end cap 102 includes a tapered portion 190 for insertion into the filter housing 101 . A chamber is formed between the end cap 114 and the closed end 803 A of the housing end cap 102 . See, FIG. 3 .
- Water is expelled from passageway 141 in the left end cap 114 of the filter housing and exerts a force against gate 118 causing it to rotate in a clockwise direction.
- gate 118 rotates in the clockwise direction the magnet 117 is urged toward the reed switch 135 (reed relay) causing it to effectively close which starts the electronic timer within electronic package 112 to continuously measure the time when the magnet 117 is in proximity to the switch.
- the electronic package (electric circuit or integrated circuit) measures the cumulative time of flow through the filter and outputs signals to the light emitting diode (LED) indicating filter performance.
- the LED indicates three colors representative of cumulative filter usage one of which indicates that the water filtration device should be discarded.
- the electric circuit outputs three discrete signals to the light emitting diode.
- the electronic package is secured in a dry well 170 which in turn is secured and closed by end plate 116 .
- the housing end cap 102 After the housing end cap 102 is installed it is welded to the filter housing 101 .
- the end plate 116 is glued or ultrasonically welded to the housing end cap 102 . That is, the housing end cap 102 is welded to the filter housing and the end plate 116 is welded or glued to the housing end cap 102 .
- Reference numeral 139 represents the raised portions of the end plate 116 which are ultrasonically welded or glued to the housing end cap 102 .
- reference numerals 302 , 303 , 130 , 131 signify peripheral edges or portions of the end caps 114 , 115 of the filter which slidingly engage and seal against the interior walls of the filter housing 101 .
- elastomeric seal 375 acts as an additional optional seal which resides between peripheral edge portions 302 and 131 and elastomeric seal 376 acts as an additional optional seal which resides between peripheral edge portions 303 and 130 .
- aperture 137 permits light emitting diode 136 which stems from the electronic package 112 to pass therethrough.
- a small amount of potting compound may be used around the light emitting diode to seal any space between the diode and the aperture 137 when the light emitting diode is installed in place.
- the electronic package 112 and the substrate upon which the electronics are mounted are housed in a dry space in the housing end cap 102 .
- Filtered outlet 107 A always expels filtered water whenever water enters the filter housing inlet 125 . See, FIG. 4H .
- Inlet 125 is generally cylindrically shaped and includes a recess 126 for receiving an O-ring seal 502 and a passageway 505 for conducting unfiltered water to the interior of the filter housing so that it can be filtered by filter 113 .
- Filter 113 is a carbon block filter and it is necessary that the water to be filtered have a certain residence time in contact with the filter so that impurities therein can be removed.
- the preferred materials of the front housing 103 , filter housing 101 and housing end cap 102 are ABS (acrylonitrile butadiene styrene) plastic although other plastics may be used.
- the preferred adhesive to be used for securing the end caps 114 , 115 to the filter is a hot melt adhesive.
- the gate material is HDPE (high density polyethylene). End caps 114 , 115 are also HDPE and the material used for sealing.
- Lever 122 is preferably an acetyl material.
- FIG. 5 is a front perspective view 500 of the filter housing 101 of the first embodiment of the water filtration device, i.e., a bathroom filter.
- FIG. 5 illustrates an inlet surface 504 adapted to receive a corresponding mating surface 190 from the housing end cap 102 . See, FIG. 1 to identify the corresponding mating surface 190 on the housing end cap 102 .
- the filter housing 101 includes a recessed region 501 for receiving the front housing 103 as best seen in FIGS. 1, 2 and 4 G.
- Engagement pins 127 , 128 assist in positioning the front housing 103 with respect to the recessed region 501 for ultrasonic welding thereto. It is the ultrasonic welding of the front housing 103 to the filter housing which secures the parts together and makes them into an integral unit.
- FIG. 4D a rear perspective view 400 D of the front housing of the first embodiment (bathroom filter) is illustrated along with the receptacles 420 , 419 .
- Reference numerals 415 , 417 and 418 indicate mold cavities which are formed as a part of the molding process of the front housing 103 .
- Joint 421 is welded to the filter housing 101 .
- O-ring seal 502 which resides in recess 126 mates with cylindrical recess 410 in the front housing 103 as illustrated in FIG. 4D to prevent leakage of water as it is being directed into the filter housing as will be explained hereinbelow.
- FIG. 5A is a front view 500 A of the filter housing 101 of the first embodiment of the water filtration device.
- the right end 508 is closed and is convexly shaped when viewed from the outside of the filter housing. Viewing the interior of the right end 508 as in FIG. 5F , it is shaped concavely.
- the water filter 113 with end caps attached thereto is inserted from the left side, the open side, of the filter housing 101 .
- FIG. 5B is a cross-sectional view 500 B of the filter housing taken along the lines 5 B- 5 B of FIG. 5A .
- FIG. 5B provides a good illustration of recess 126 in inlet 125 and of pin 128 .
- Outlets 180 and 107 A are also illustrated in FIG. 5B .
- FIG. 5C is a cross-sectional view 500 C of the filter housing taken along the lines 5 C- 5 C of FIG. 5A .
- Outlet port 180 is illustrated in cross-section as having two diametrical sections 503 and 506 .
- outlet port 107 A is illustrated as having two diametrical sections 519 and 507 .
- FIG. 5D is a cross-sectional view 500 D of the filter housing taken along the lines 5 D- 5 D of FIG. 5A .
- FIG. 5D illustrates the recessed region 501 in filter housing 101 .
- Also illustrated in FIG. 5D is the inlet 125 having passageway 505 therein.
- FIG. 5E is a bottom view 500 E of the filter housing of the first embodiment of the water filtration device illustrating diametrical portions 507 , 519 of outlet 107 A.
- FIG. 5E illustrates that outlet 107 A resides generally forwardly in the filter housing.
- Outlet 107 A includes spout 107 which is affixed through an ultrasonic weld or by gluing same to the filter housing 101 . See, FIG. 1 .
- FIG. 2 is a perspective view 200 of a first embodiment of the water filtration device.
- collar lock 105 is inserted within collar 104 and is welded to surface 401 of front housing 103 .
- FIG. 4 is an enlargement 400 of the front housing of the first embodiment of the water filtration device.
- FIG. 4E is a cross-sectional view 400 E of the collar 104 , collar lock 105 and screen 110 .
- Screen 110 includes an elastomeric generally circular periphery and a convexly shaped screen portion 110 A.
- Collar 104 may rotate with respect to collar lock 105 in the connection and disconnection process with a faucet.
- the faucet (not shown) seals on the elastomeric portion of the screen 110 .
- Screen 110 assists in removing large particulate matter.
- FIG. 4G is a cross-sectional view 400 G taken along the lines 4 G- 4 G of FIG. 2 with the flow diverter valve 108 inserted in the front housing in a first position, bypass position.
- Flow arrow 470 indicates the path flow will take through the front housing when the water bypasses the filter.
- FIG. 4H is a cross-sectional view 400 H taken along the lines 4 H- 4 H of FIG. 2A with the flow diverter valve 108 inserted in the front housing in a second position which directs flow into the filter.
- Flow arrow 471 indicates the path of flow through the front housing when the diverter valve 108 is rotated counterclockwise when viewing FIG. 4H to a second position. Referring to FIG. 2A , valve and valve handle 108 are pulled forward to the second position when it is desired to filter the water.
- elastomeric seal 450 is illustrated as sealing passageways 603 and 610 in valve 108 .
- Passageway 610 is formed by wall 611 and passageway 603 is formed by wall 605 which is horn shaped.
- FIG. 6 a perspective view 600 of the valve and its handle 108 which are used in both the first embodiment and the second embodiment of the water filtration device.
- the handle portion of the valve includes an insert 109 which may glued to a corresponding recess 109 A in the handle. See, FIG. 1 .
- FIG. 4A is a cross-sectional view 400 A taken along the lines 4 A- 4 A of FIG. 4 illustrating the generally cylindrical wall 401 to which the collar lock 105 is welded.
- FIG. 4E is a cross-sectional view 400 E illustrating the collar lock 105 secured to the wall 401 with the collar 104 being rotatable and movable slightly vertically for engagement with a faucet. Screen 110 is also illustrated in FIG. 4A .
- valve 108 is not shown therein so as to view the valve stop 407 which controls the rotation of the valve between its first (bypass position) and its second (filter) position.
- Valve cavity 430 is tapered as it extends inwardly as indicated by circular lines 412 and 431 . See, FIGS. 4A and 4B .
- Ports 403 and 408 join to form a water inlet to the valve cavity 430 .
- Water outlet 409 conveys water to be filtered when the front housing is nonremovably affixed to the filter housing 101 and the valve 108 is in its second position.
- FIG. 4B is a cross-sectional view 400 B taken along the lines 4 B- 4 B of FIG. 4 and also illustrates the taper of valve cavity 430 .
- FIGS. 4A and 4B recess 416 is illustrated for receiving a seal 640 on the valve 108 illustrated in FIG. 6 .
- Bypass port or passageway 414 is illustrated in FIGS. 4A and 4B .
- Stop 407 is also illustrated in FIG. 4B as is recess 410 for receiving inlet 125 of the filter housing 101 .
- mold aperture 415 from the molding process is illustrated in cross section.
- FIG. 4C is a top view 400 C of the front housing 103 of the first embodiment and also illustrates the ports 403 and 408 .
- FIG. 4 is an enlargement 400 of the front housing 103 of the first embodiment of the water filtration device illustrating wall 401 to which the collar lock 105 is welded. Ports 403 , 408 in floor 404 are shown in the top of the housing as are mold openings 402 . Recess 416 in valve cavity 431 is shown as is rim 406 which is welded to the filter housing 101 . Recess 416 receives seal 640 on valve 108 so as to prevent leakage about valve 108 .
- bottom portion 103 A of the front housing is illustrated along with bore 422 having stepped portions 429 and 413 .
- Bore 422 receives aerator assembly 111 / 111 A and spout 106 secures the aerator assembly in place as it is welded to the bottom portion 103 A of the housing 103 .
- FIG. 4F a cross-sectional view 400 F of the aerator assembly 111 / 111 A mounted into the front housing.
- reference numerals 302 , 303 , 131 , and 130 indicate sliding engagement of the filter end caps 114 , 115 with the filter housing 101 .
- second outlet 180 in the filter housing 101 is disclosed.
- Alignment mark 160 is also illustrated well in FIG. 1 and it is this mark which is used during assembly to ensure that the left filter end cap 114 and hinges 132 / 132 A are positioned such that the axis of the hinges are parallel to the earth enabling gate 118 to swing freely upon the application of pressure thereto and not to bind.
- Plunger 120 having a passageway 120 A therein fits somewhat snugly within second outlet 180 and is slidingly movable therein.
- Lever 122 resides in engagement with the plunger 120 such that the plunger 120 and lever 122 move together.
- lever 122 is hinged and pivotal on prongs or protrusions 138 of the housing end cap 102 .
- lever 122 has a decorative insert 123 which resides in a corresponding recess.
- Fountain head 119 resides in and through passageway 122 A in lever 122 .
- Fountain 119 includes a passageway 119 A in communication with passageway 120 A in plunger 120 . Passageway 120 A is exposed to fluid under pressure in chamber 350 when the plunger is depressed by lever 122 .
- Plunger 120 includes a shoe portion 1104 .
- FIG. 11 is a perspective view 1100 of the plunger 120 used in conjunction with the lever 122 and elastomeric ball valve 121 .
- Plunger 120 includes a cylindrical portion 1103 and a shaft 1105 with a shoe 1104 on the end thereof.
- a flat extending portion 1101 of the plunger resides against a corresponding surface of the lever 122 .
- a taper 1102 leads to passageway 120 A.
- FIG. 11 A is a another perspective view 1100 A of the bottom side of the plunger 120 used in conjunction with the lever 122 and elastomeric ball valve 121 .
- Contoured side edge portion 1150 of plunger 120 engages lever 122 .
- Passageway 120 A and bottom side 1106 of the flat extending portion 1101 are best viewed in FIG. 11A .
- Spring 124 is operable between the bottom side 1106 of plunger and a lip 570 of the filter housing. See FIG. 3 , a cross-sectional view 300 of the first embodiment of the water filtration device taken along the lines 3 - 3 of FIG. 2 .
- the filter is not operating meaning that the diverter valve 108 is in the bypass (first) position.
- FIG. 11B is a top view 1100 B of the plunger 120 illustrating the passageway 120 A.
- FIG. 11C is a cross-sectional view 1100 C of the plunger 120 taken along the lines 11 C- 11 C of FIG. 11B .
- FIG. 11D is a cross-sectional view 1100 D taken along the lines 11 D- 11 D of FIG. 11B .
- FIG. 12 is a front view 1200 of the ball valve 121 .
- FIG. 12A is a cross sectional view 1200 A taken along the lines 12 A- 12 A of FIG. 12 .
- Shoe 1104 is covered by elastomeric valve 121 which includes a cavity which is substantially reciprocally shaped to the shape of the shoe.
- Elastomeric valve of boot 121 includes a surface 1202 which engages the interior of the filter housing around passageway 506 . See, FIGS. 5C and 3 .
- FIG. 3A is an enlargement 300 A of a portion of FIG. 3 illustrating the valve 121 engaged with the inner wall of housing 101 .
- Spring 124 is operable between filter housing 101 and plunger 120 and urges the plunger and the lever upwardly when viewing FIGS. 3 and 3 A.
- annular space 301 between the filter 113 and the filter housing 101 is illustrated. Water occupies this annular space 301 during operation of the filter. Water resides in this annulus and flows through filter 113 into passageway 129 and out port 141 impinging upon gate 118 rotating it clockwise.
- water filtration device of the first embodiment When the water filtration device of the first embodiment is operable, water will be expelled from both outlets 107 A and 180 if lever 122 is depressed. If the lever is not depressed then elastomeric valve 121 is seated against the curved inner surface of the filter housing 101 and water will be expelled just from the outlet 107 A.
- Valve 121 is preferably elastomeric but may be made of other materials such as metal.
- FIG. 3 illustrates spacer 142 extending from the closed end 803 A of housing end cap 102 near the filter left end cap 114 .
- FIG. 8 is a side view 800 of housing end cap 102 .
- Closed end 803 is a wall or boundary between the wetted chamber 350 and the electronic package 112 and sensor 135 .
- Guide ribs 801 , 802 and 810 enable placement of the generally-rectangularly shaped electronic package within the drywell 811 of the housing end cap 102 .
- End plate 116 fits over the opening 811 of the end cap and is either welded or glued 139 to the end cap for hermetic sealing thereof.
- FIG. 8A is a perspective view 800 A of the other side, i.e., the wetted side, of the end cap illustrated in FIG. 8 . Sloped surface 190 which is welded to filter housing 101 is illustrated in FIG. 8A .
- FIG. 3B is a cross-sectional view 300 B of the first embodiment of the water filtration device with the fountain lever 122 depressed and valve 121 off its seat. It will be noticed that plunger 120 bends slightly when lever 122 is depressed. This bending tends to seal the passageway denoted by reference numeral 506 .
- Gate 118 is shown rotated clockwise due to water flow out of passageway 141 . In this position, gate 118 and magnet 117 are in proximity to reed switch 135 .
- FIG. 3C is an enlargement 300 C of a portion of FIG. 3B and illustrates the flow path 391 of water past valve 121 , through passageway 120 A of plunger 120 and through passageway 199 A of fountain 119 . It will be noticed in FIGS. 3, 3A , 3 B and 3 C that outlet 107 A is not shown therein as it is located fore (ahead) with respect to the cross-section of these drawing figures.
- FIG. 6 is a perspective view 600 of the valve 108 and its handle which are used in both the first embodiment and the second embodiment of the water filtration device.
- FIG. 6 illustrates the underside (the side that is not exposed) when viewing FIG. 2 .
- Reference numeral 612 illustrates a cavity from the molding process.
- Reference numeral 609 indicates the handle portion of the valve 108 and reference numeral 608 indicates the other or second end of the valve 108 .
- Ridges 602 engage stop 407 to limit the rotation of the valve between its first bypass position and its second filter position.
- a horn shaped passageway 603 is formed by wall 605 .
- Wall 606 creates an annulus 604 in which a seal (not shown in FIG. 6 ) is positioned.
- a seal 450 is positioned in annulus 604 as indicated in FIGS. 4G and 4H .
- a groove 607 resides in the valve 108 for receiving a seal (not shown in FIG. 6 ) which prevents leakage of water from the valve 108 when it inserted in the front housing 103 .
- FIG. 6A is a perspective view 600 A of the exposed side of the valve and its handle 108 as viewed in FIG. 2 .
- FIG. 6A illustrates seal 640 in groove 607 for sealing the valve 108 which is snap fit in the front housing.
- FIG. 7 is a perspective view 700 of the electronic package 112 , battery 701 , sensor 135 , leads 702 , 703 and light emitting diode 136 used in the first and second embodiments of the water filtration device.
- sensor 135 is a reed switch also known as a reed relay.
- FIG. 7A is a side view 700 A of the electronic package illustrated in FIG. 7 .
- FIG. 9 is a front view 900 of gate 118 of the first embodiment.
- Recess 134 receives magnet 117 which actuates reed switch 135 when in proximity therewith. Prongs or knobs 134 interengage corresponding hinges 134 as illustrated in FIGS. 1 and 3 .
- FIG. 9A is a cross-sectional view 900 taken along the lines 9 A- 9 A of FIG. 9 .
- FIG. 9A illustrates the contour of the gate 118 which includes front 903 and rear 902 surfaces. Sloping surface 904 diverges to body 905 having recess 134 in which magnet 117 is housed.
- Locks 901 secure magnet 117 in place. The magnet is installed by simply pushing on the magnet to orient it past the locks 901 which are plastic and somewhat malleable enabling insertion of the magnet into the plastic. The magnet is then hermetically sealed with potting compound.
- FIG. 10 is a front view 1000 of the left end cap 114 of the filter 113 .
- Hinges 132 / 132 A are illustrated in FIGS. 10 and 10 A.
- FIG. 10A is cross-sectional view 1000 A of the left end cap of the filter taken along the lines 10 A- 10 A of FIG. 10 illustrating the hinges 132 / 132 A, passageway 141 , dowel 1001 , and protrusions 1002 and 1003 which slidingly seal with respect to the filter housing.
- Peripheral end portion such as the one denoted by reference numeral 131 are relatively soft and seal against the interior of the filter housing.
- FIG. 13 is a top view 1300 of the lever 122 used to operate the plunger 120 of the first embodiment.
- Reference numeral 1301 indicates a recess in which insert 123 is secured by adhesive.
- Apertures or hinges 140 / 140 A engage prongs or protrusions 138 for pivoting as previously described.
- FIG. 13A is a cross-sectional view of the lever 122 taken along the lines 13 A- 13 A of FIG. 13 also illustrates the aperture 140 A.
- Cavities 1302 and 1303 are illustrated in FIG. 13A . Cavity 1303 fits over flat portion 1101 of plunger 120 . See, FIG. 11 .
- FIG. 13B is a perspective view 1300 B which illustrates the underside of the lever 122 of FIG. 13 . Cavity 1303 and wall 1304 of cavity 1303 are illustrated. Flat portion 1101 of plunger 120 fits into cavity 1303 .
- FIG. 14 is a front view 1400 of the fountain head 119 illustrating flanges 1401 and 1402 .
- FIG. 14A is a cross-sectional view 1400 A taken along the lines 14 A- 14 A of the fountain head 119 of FIG. 14 .
- Flange 1402 is snap-fit into place in lever 122 as is best seen in FIG. 3 .
- Fountain head 119 is made of plastic.
- Spring 124 is illustrated in FIG. 1 as operable between seat 570 and surface 1106 . See, FIGS. 3, 5C and 11 C.
- FIG. 3 illustrates valve 121 seated against seat 330 .
- FIGS. 1-14 are directed toward the first embodiment of the invention. Some of the uses of the first embodiment of the invention are in bathrooms, hotel and motel rooms. The device disclosed is small and convenient for storage on vacations and business trips.
- FIGS. 15-20 are directed toward the second embodiment of the invention. Use of the second embodiment include kitchen and bar uses. Both embodiments are designed such that the filter sits rearwardly with respect to the faucet so that access to the faucet and the filter is permitted.
- FIG. 15 correspond generally to the reference numerals used in FIG. 1 such that for example reference numerals 101 and 1501 both indicate filter housings.
- FIG. 15 is an exploded perspective view 1500 of a second embodiment of the invention.
- Filter housing 1501 may have, for example, a diameter of 2.40 inches and a length of approximately 3.90 inches.
- One of the principal differences in the kitchen filter of the second embodiment is that it has only one filtered outlet 1507 A whereas the bathroom unit has two filtered outlets 107 A and 180 .
- Filters 1513 and 113 may be pre-wrapped 495 using a hot seal method. See, FIGS. 4G and 4H .
- Adhesive is applied to the filter end caps 1514 , 1515 , then attached to the filter after which the subassembly is inserted into the filter housing. Peripheral seal portions of end caps 1514 , 1515 seal the filter.
- O-rings 375 , 376 may be used to seal the filter so as to prevent unfiltered water from entering chamber 1750 . See, FIG. 17 .
- the aerator assembly 1511 and spout 1506 are affixed in the front housing 1503 as previously illustrated.
- the collar lock 1505 is welded to the front housing 1503 and collar 1504 is permitted to rotate with respect to the collar lock.
- the screen assembly is inserted into the assembly atop the collar lock.
- Gate 1518 is slightly dimensionally different than the gate 118 previously described but it functions in the same way as gate 118 .
- Spacers 1542 and 1543 extend from end cap 1502 and serve to ensure that gate 1518 remains in alignment.
- Electronic package 112 is the same package used in the first embodiment.
- Reed switch 135 (or reed relay as it sometimes known) senses the proximity of magnet 1517 and the electronic package measures the total time of flow.
- a reed switch which is a magnetically coupled device
- a capacitance based device or a pressure-sensitive device may be used instead.
- the pressure sensitive device would have to mounted in the closed end of the housing end cap 1502 .
- Valve 108 illustrated in FIG. 15 is the same valve used in the bathroom filter of the first embodiment.
- Spacers 1542 , 1543 of the housing end cap 1502 assist in ensuring that the filter subassembly is in place.
- a gap (unnumbered) exists between the spacer 1543 and the end cap 1514 of the filter. Spacer limits the movement of the filter subassembly such that it cannot move leftwardly too far before engaging the spacers.
- End plate 1516 is glued or welded to the housing end cap 102 .
- Housing end cap 102 is glued or welded to the filter housing 1501 .
- FIG. 16 is a perspective view 1600 of the second embodiment of the water filtration device.
- FIG. 17 is a cross-sectional view 1700 of the second embodiment of the water filtration device taken along the lines 17 - 17 of FIG. 16 .
- FIG. 17A is a cross-sectional view 1700 A of the second embodiment of the water filtration device similar to FIG. 17 except the gate 1518 is shown rotated clockwise in the flow condition.
- Annulus 1701 is illustrated in FIG. 17A . Water resides in this annulus and flow thru filter 1513 into passageway 1529 and out port 1541 impinging upon gate 1518 rotating it clockwise.
- filter end caps 1514 and 1515 have peripheral end portions (i.e., 1531 and 1530 ) which are seals which seal against the interior diameter of the filter housing 1501 .
- peripheral end portions i.e., 1531 and 1530
- optional elastomeric O-ring seals similar to 375 , 376 may be used between the peripheral end seals as illustrated in FIG. 3D .
- FIG. 18 is a perspective view 1800 of the front housing of the second embodiment.
- FIG. 18 employs reference numerals like FIG. 4 .
- FIG. 18A is a cross-sectional view taken along the lines 18 A- 18 A of FIG. 18 .
- Reference numeral 1801 indicates the wall to which the collar lock 1505 is welded and reference numeral 1804 indicates the floor upon which the collar lock 1804 sits at the time it is welded.
- Mold recesses 1802 are from the molding process. Groove or recess 1816 receives the seal from the valve 108 . Cavity 1831 receives the valve 108 .
- stop 1807 A is illustrated which engages ridges 602 on valve 108 .
- Stop 1807 A is also illustrated in FIG. 18B , a cross-sectional view taken along the lines 18 B- 18 B of FIG. 18 .
- Tapered bore 1812 is illustrated by the circular lines in FIG. 18A .
- Bore 1822 includes stepped portions 1813 and 1829 .
- Inlet 1808 is shown leading to valve cavity 1831 .
- Outlet 1814 and outlet 1809 are also shown in FIG. 18A .
- inlet 1808 is connected to outlet 1814 and the water passes through front housing 1503 and is expelled unfiltered.
- Flow arrow 1870 depicts the path of flow through front housing 1503 .
- FIG. 18F inlet 1808 is connected to outlet 1809 where it is directed into the filter by inlet 1525 of the filter housing 1501 . See, FIG. 16A a perspective view of a second embodiment of the water filtration device with the valve handle pulled forward.
- Flow arrow 1871 depicts the path of flow through front housing 1503 and into inlet 1525 of the filter housing.
- valve cavity 1831 is illustrated as is stop 1807 A and the cross-sectional portion 1807 of the stop. Unfiltered outlet 1814 is also depicted.
- FIG. 18C is a top view 1800 C of the front housing 1503 of the second embodiment.
- FIG. 18D is a rear perspective view 1800 D of the front housing of the second embodiment of the water filtration device.
- FIG. 18D illustrates receptacles 1819 and 1820 of the front housing which engage pins 1528 and 1527 respectively. Mold recesses from the molding process are indicated by reference numerals 1817 , 1818 , 1823 , 1824 and 1825 .
- Joint 1821 is welded to the filter housing.
- FIG. 19 is a front perspective view 1900 of the filter housing of the second embodiment of the water filtration device.
- Surface 1904 engages the corresponding surface on the housing end cap 1502 .
- Recess 1901 engages the perimeter of the front housing.
- FIG. 19A is a bottom view 1900 A of the of the filter housing 1501 of the second embodiment of the water filtration device.
- FIG. 19B is a cross-sectional view 1900 B taken along the lines 19 B- 19 B of FIG. 19A illustrating port 1907 from which filtered water is expelled.
- FIG. 19C is a cross-sectional view 1900 C taken along the lines 19 C- 19 C of FIG. 19C illustrating passageway 1905 in inlet 1525 of the filter housing 1501 .
- FIG. 19D is a left side view 1900 D, the open end view, of the filter housing 1501 of the second embodiment of the water filtration device illustrating mold prongs in the end housing. These prongs or ribs 1906 restrict the insertion depth of the filter sub assembly.
- FIG. 20 is a front side view 2000 of the end cap of the housing 1502 of the second embodiment of the water filtration device. Surface 2007 of the housing end cap engages surface 1904 of the filter housing and is welded or glued thereto.
- FIG. 20A is a right side view 2000 A of the end cap of FIG. 20 illustrating the closed end 2003 .
- FIG. 20B is a perspective view 2000 B of the end cap of FIG. 20 illustrating the closed end and spacers 1543 , 1542 .
- FIG. 20C is a view 2000 C of the left side of the end cap of FIG. 20 illustrating supports 2001 , 2002 and 2010 which restrict the movement of the electronic package in place.
- FIG. 20D is another perspective view 2000 D of the end cap illustrating the housing 2011 in which the electronic package resides.
- a prefilter may be wrapped around the filter and sealed using the hot seal method.
- the left and right end caps with adhesive applied to the contact surfaces thereof are inserted in the filter.
- Uniform pressure is applied to the left and right filter end caps 114 , 115 , 1514 , 1515 to spread the adhesive and allow it to set.
- Approximate time for applying pressure is 2-5 seconds.
- the magnet is installed into the gate under the pressure of a person's finger or a tool such as pliers or the equivalent then hermetically sealed in place.
- the gate 118 , 1518 is snapped into the hinges with the magnet facing outwardly.
- Indicia on the left end cap of the filter subassembly is aligned with a mark or other indicia on the filter housing and the filter subassembly is inserted into the filter housing.
- Indicia on the housing end cap 102 , 1502 is aligned with indicia on the filter housing and inserted therein.
- the lever is installed by snapping it into place in the valve cavity.
- the light emitting diode is inserted into and through the aperture 137 .
- adhesive may be used when installing the diode in the aperture 137 to secure it into position and to ensure that the diode is hermetically sealed.
- the electronic package is installed into the reservoir in the open end of the housing end cap with the glass reed switch facing inwardly.
- End plate 116 , 1516 is next snap-fit into place to hermetically seal the electronic package.
- adhesive may be used around the perimeter of the end plate to ensure a hermetic seal. Or, the end plates may be welded to the housing end caps.
- the materials which are ultrasonically welded should be amenable to welding such as ABS or other plastics.
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- Filtration Of Liquid (AREA)
Abstract
Single-use long-life faucet mounted water filtration devices are disclosed. A bathroom water filtration device having two outlets for filtered water is disclosed. Additionally, a fountain head is included for use in the bathroom water filtration device. The water filtration device is of unibody construction formed by ultrasonically welding certain parts thereof together. Since the devices disclosed are disposable, no filter replacement or other maintenance is performed. A gate, magnet, sensor and electronics provide an indication of filter performance enabling disposal of the water filtration device and installation of a new device. A kitchen water filtration device is larger than the bathroom device. Both the kitchen and bathroom water filtration devices are small and are mounted behind the faucet connection so as to facilitate full utilization of the sink or wash basin.
Description
- This patent application claims priority of provisional patent application Ser. No. 60/438,457 filed Jan. 8, 2003 and provisional patent application No. 60/409,042 filed Sep. 9, 2002.
- The field of the invention is water filtration devices.
- The demand for pure water continues to grow rapidly due to increasing concerns about the quality and safety of tap water, the popularity of water as a beverage (instead of soda and alcohol) and the growing awareness that most people do not drink enough water as prescribed by the medical community.
- Water is supplied from municipal water systems (many of which are aging), private water systems and wells in the United States. Frequently, this water has poor taste, particulates, unwanted odors and in many cases contaminants contained in it. Municipal water is commonly treated with chlorine to eliminate bacterial contaminants. Chlorine adds what most people feel is an unpleasant taste and odor. Water conditions vary greatly according to the geographic area and therefore travelers may also experience these problems as they visit hotel and motel rooms around the country. It is desirous to remove bad tastes, odors, sediment and contaminants before ingesting the water or using it for cooking food.
- Water treatment devices of many varieties have proven effective in accomplishing water purification. Generally these devices work through chemical and mechanical actions that remove contaminants and impurities from water. These filters have a finite life. Sediment can eventually clog a filter and chemical reactions realized through adsorption (carbon media) and ion exchange (cation resin) have a limited capacity.
- U.S. Pat. No. 5,989,425 to Yonezawa et al. discloses a multi-way valve and water purifier. The multi-way valve is disclosed as a small-sized one which may be used with a small-sized water purifier. The device disclosed in the '425 patent is a faucet mounted filter and it is designed for removing and exchanging valve bodies.
- U.S. Pat. No. 5,017,286 to Heiligman and United States Pat. No. Re. 35667 to Heiligman disclose a vertical filter enclosed in a housing and the housing is supported by a duct. The vertical filter may be permanently secured to the filter by hot melt adhesive which renders the filter non-removable. Further, the vertical filter may be pre-wrapped with a porous paper pre-filter. The device disclosed in the '286 patent is a faucet mounted filter. If the filter is glued to the filter housing the filter housing must be removed and discarded together with the filter. A new filter housing (and filter) must then be mounted onto the duct of the diverter valve each time the filter housing is replaced. This involves time consuming labor in the case of each embodiment disclosed in the '286 patent. In one embodiment of the '286 patent, the filter housing is secured by a retaining clip. In another embodiment disclosed in the '286 patent, the male duct of the filter housing is press-fit into an opening in the diverter valve. Alternatively, the male duct of the filter housing may be affixed to the diverter valve by a U-clip, cotter pin or the like. The filter housing as disclosed in the '286 patent is disclosed as residing vertically in front of the faucet. In short, it is not a simple matter to change the filter housing of the device disclosed in the '286 patent.
- U.S. Pat. No. 5,527,451 to Hembree et al. discloses a faucet mounted filter utilizing a replacement filter cartridge. The replacement filter cartridge resides within a larger rotatable housing which channels water flow either into the filter or through the diverter valve assembly. Hembree et al. also discloses a very complicated flow totalization mechanism which includes porting water to a turbine driven mechanism prior to filtering thereof
- U.S. Pat. No. 6,571,960 B2 to Williamson et al. discloses a faucet-mounted water filtration device whose filter housing includes a valve therein and whose filter housing extends longitudinally rearwardly from the point of attachment to the faucet. The filters in Williamson et al. are replaceable filter cartridges.
- U.S. Pat. No. 6,284,129 B1 to Giordano et al. discloses a rotating a magnetized impeller actuating a reed switch.
- In each of the foregoing disclosures, the devices disclosed therein are designed for disassembly of some sort as a matter of maintenance of the filtration device. This requires labor and attendant time. Complex flow totalization mechanisms such as the one disclosed in Hembree et al. '451 present maintenance problems. The need to change the filter and/or the filter housing and/or the diverter valve all require labor and attendant time.
- In each of the foregoing disclosures, the devices disclosed therein are designed for disassembly of some sort as a matter of maintenance of the filtration device. Filtration devices customarily employ replaceable filter cartridges of some type. These arrangements require either a coupling arrangement for attaching and detaching a replacement filter cartridge or a large chamber to entirely enclose the replacement filter cartridge. Both approaches require additional components and materials that add to the manufactured cost and complexity of the device. Furthermore, each of the foregoing disclosures, by requiring the replacement of the filter element, cause great inconvenience to the user by having him search for and procure replacement filter elements at considerable cost. This arrangement, while lucrative for the manufacturer, is a well documented nuisance for the consumer. In addition, most of the devices in the related art, owing to their need for easy access and maintenance are relatively large and obtrusive partially blocking the sink basin. Finally, the devices noted above and most others despite the availability of high capacity filter media are not designed for long life so as to maximize the frequency with which users must purchase replacement filter elements.
- It is therefore desirable to have a small faucet-mounted water filtration device which is a single-use, long-life water filtration device which includes an indicator of filter performance. By single use it is meant that it is discarded when its performance indicator reveals that the efficacy of the filter has been diminished. It is also desirable to have the filter housing of the water filtration device mounted behind the connection to the faucet to enable full access to the sink basin beneath the faucet.
- A single-use faucet-mounted water filtration device is provided. The device is of uni-body construction and has no removable or replaceable parts yet provides long life operation. This arrangement makes the device more convenient to use compared with other devices that require frequent replacement of filter cartridges. The device is constructed with a minimum of components making it relatively small in size and less costly to manufacture. While compact, the device is able to hold enough filter media to allow for long life operation. The life of the water filtration device is dependent upon the type of filter media used, sizing and geometry of the filter media, and the sizing and geometry of water flow paths. For instance, water filtration devices having a useful life of 300 gallons or more can be made utilizing the teachings of the instant invention. Water filtration devices having useful lives smaller than 300 gallons may also be made utilizing the teachings of the instant invention. Performance indications as a function of integrated flow are indicated by a light emitting diode.
- The main housing of the devices resides beneath the faucet neck and rearward of the water discharge point thus not obstructing the sink basin. A single-use device is provided for use in a kitchen sink and a device is provided for use in a bathroom sink. Unlike devices in the related art the bathroom embodiment of the single-use faucet filter is scaled to the small size of bathroom sinks and therefore practical for use in bathrooms. The bathroom filter device allows residential users to have the benefit of filtered water in close proximity to the bedroom avoiding the inconvenience of going to a kitchen sink for water during the night. In addition, because the bathroom device is small and disposable it may be taken with a traveler and installed in a hotel or motel room. Further, as travelers readily discern the differences between water and its tastes from one place to another it is highly desirable that the water filter be portable.
- The invention includes a front housing connectable to a water faucet and a filter housing having an inlet and an outlet. An end cap of the filter housing completes the filter housing. The front housing is non-removably affixed to the filter housing and the water filter is non-removably contained within the water filter housing. The water filter housing includes a chamber in communication with the water filter. The filter is preferably activated carbon and includes a filter pre-wrap. Other filter media may be used. The outlet resides in the chamber. Alternatively, a second outlet may also reside in the chamber in the embodiment of the bathroom filter.
- The single use water filtration device is small. The embodiment designed for bathroom use has a filter diameter less than or equal to 1.6 inches. The embodiment designed for kitchen use has a filter diameter less than or equal to 2.2 inches. The water filtration devices disclosed herein, namely the bathroom and kitchen embodiments, reside substantially rearwardly with respect to the water faucet. Other diameters and sizes of the water filtration devices disclosed herein may be made using the teachings hereof.
- The filter includes ends thereof each secured to an end cap. The end caps have peripheral seal portions which seal against the interior of the filter housing.
- A housing end cap is ultrasonically welded to the filter housing. Other welding methods such as microwave, radio frequency (RF), heat and induction welding may be employed to weld various portions of the water filtration devices disclosed herein together.
- The second outlet includes a valve seat and a valve interposed in the filter housing being operable against the valve seat of the second outlet for controlling the flow out of the second outlet. The valve includes a plunger having a foot and an elastomeric ball valve or boot residing over the foot. The foot of the plunger and the elastomeric ball valve reside within the housing. A handle is pivotally connected to the end cap of the filter housing and engages the plunger such that when the plunger is depressed the elastomeric ball valve moves inwardly toward the center of the housing and away from the seat of the second outlet. A fountain head is rotatably secured in the plunger and lever for communication with a passageway in the plunger.
- A spring is interposed between the plunger and the filter housing urging the elastomeric ball valve against the valve seat of the second outlet.
- A front housing having first and second passageways is non-removably affixed to the filter housing. The front housing includes a directional valve residing within the front housing and movable therein for directing water into the filter for filtering or through the front housing for direct use of the unfiltered water. The filter housing includes three protrusions which interengage corresponding apertures in the front housing. The front housing also includes a continuous periphery welded to the filter housing by one of the aforementioned methods. The filter housing includes a recess whose shape is the reciprocal of the continuous periphery of the front housing and the continuous periphery of the front housing fits snugly within the recess in the filter housing. The end cap of the filter housing is welded to the filter housing. Three parts or pieces, the filter housing, the front housing and the end cap of the filter housing are welded together to provide a unibody or integral construction.
- A gate having a magnet affixed therein resides in the chamber and swings between a first position and a second position. Spacers extending from the end cap serve to ensure that the gate remains in alignment with respect to the earth. These spacers also serve to ensure that the filter subassembly remains in proper position. The first end cap of the filter includes a first hinge member and the gate includes a second hinge member which coacts with the first hinge member to enable the gate to swing between first and second positions. A gate position sensor resides in a dry portion of the end cap of the water filter housing and is actuated when the gate swings to the second position and the magnet is in proximity to the sensor.
- An electronic package and a light emitting diode reside in the dry portion of the end cap of the water filter housing. The electronic package outputs a signal to the light emitting diode which indicates the performance of the water filtration device. The electronic package outputs three discrete signals to the light emitting diode to indicate three performance levels of the filter.
- A method of making a water filtration device is also disclosed and comprises the steps of: attaching end caps to the filter; inserting the filter within a filter housing; aligning the filter within the filter housing; inserting a portion of a gate into corresponding receptacles on one end of one of the end caps previously affixed to the filter; inserting a sensor and electronic package into an open end of a filter housing end cap; affixing the filter housing end cap to the filter housing forming a chamber between a closed end of the filter housing end cap and the one end of one of the end caps; and, affixing a front housing to the filter housing. The step of attaching end caps to said filter may be performed with adhesive. And, the steps of affixing the end cap of the filter housing, affixing the filter housing end cap to the filter housing and affixing the front housing to the filter housing may be performed by an ultrasonic welding process or one of the other welding processes identified herein.
- It is an object of the present invention to provide a water filtration device which is disposable and provides an indication as to when the filter should be disposed.
- It is a further object of the present invention to provide a water filtration device which is small in size and which resides substantially rearwardly with respect to the faucet to which it is mounted.
- It is a further object of the present invention to provide a water filtration device which is self-contained and which does not require maintenance and, in fact, which cannot be maintained because the parts thereof are non-removably affixed together or non-removably contained therein.
- It is an object of the present invention to provide a water filtration device at reasonable cost which is disposable and which is faucet mounted.
- It is an object of the present invention to provide a water filtration device which includes a swinging gate having a magnet therein which in combination with a sensor and an electronic package provides a visual indication as to the status or performance of the filter.
- It is an object of the present invention to provide a water filtration device which includes two filtered outlets.
- It is an object of the present invention to provide a water filtration device which includes a valved outlet with the valve operated by a lever.
- It is an object of the present invention to provide a water filtration device which includes an outlet having a rotatably mounted fountain head.
- It is an object of the present invention to provide a water filtration device which includes a lever actuated fountain.
- These and additional objects will become apparent when reference is made to the Brief Description of the Drawings, Description of the Invention and Claims which follow hereinbelow.
-
FIG. 1 is an exploded assembly view of a first embodiment of the water filtration device. -
FIG. 2 is a perspective view of a first embodiment of the water filtration device. -
FIG. 2A is a perspective view of a first embodiment of the water filtration device with the handle of the valve pulled forward. -
FIG. 3 is a cross-sectional view of the first embodiment of the water filtration device taken along the lines 3-3 ofFIG. 2 . InFIG. 3 the filter is not operating as no water is being directed into it. -
FIG. 3A is an enlargement of a portion ofFIG. 3 . -
FIG. 3B is a cross-sectional view of the first embodiment of the water filtration device with the fountain lever depressed and with water flowing through the filter. -
FIG. 3C is an enlargement of a portion ofFIG. 3B . -
FIG. 3D is a cross-sectional view of the first embodiment of the water filtration device similar toFIG. 3 with an O-ring used as an additional seal for the filter subassembly. -
FIG. 4 is an enlargement of the front housing of the first embodiment of the water filtration device. -
FIG. 4A is a cross-sectional view of the front housing taken along thelines 4A-4A ofFIG. 4 . -
FIG. 4B is a cross-sectional view of the front housing taken along thelines 4B-4B ofFIG. 4 . -
FIG. 4C is a top view of the front housing of the first embodiment. -
FIG. 4D is an enlarged rear perspective view of the front housing of the first embodiment. -
FIG. 4E is a cross-sectional view of the rotatable collar (faucet adapter) and the lock collar which is secured to the front housing. -
FIG. 4F is a cross-sectional view of the aerator mounted into the front housing. -
FIG. 4G is a cross-sectional view taken along thelines 4G-4G ofFIG. 2 with the flow diverter valve inserted in the front housing in a first position, bypass position. -
FIG. 4H is a cross-sectional view taken along thelines 4H-4H ofFIG. 2A with the flow diverter valve inserted in the front housing in a second position which directs flow into the filter. -
FIG. 5 is a front perspective view of the filter housing of the first embodiment of the water filtration device. -
FIG. 5A is a front view of the filter housing of the first embodiment of the water filtration device. -
FIG. 5B is a cross-sectional view of the filter housing taken along thelines 5B-5B ofFIG. 5A . -
FIG. 5C is a cross-sectional view of the filter housing taken along thelines 5C-5C ofFIG. 5A . -
FIG. 5D is a cross-sectional view of the filter housing taken along thelines 5D-5D ofFIG. 5A . -
FIG. 5E is a bottom view of the filter housing of the first embodiment of the water filtration device. -
FIG. 5F is a left side view, the open end view, of the filter housing of the first embodiment of the water filtration device. -
FIG. 6 is a perspective view of the valve and its handle which are used in both the first embodiment and the second embodiment of the water filtration device. -
FIG. 6A is a perspective view of the other side of the valve and its handle ofFIG. 6 . -
FIG. 7 is a perspective view of the electronic package (electric circuit), sensor and light emitting diode used in the first and second embodiments of the water filtration device. -
FIG. 7A is a side view of the electronic package (electric circuit), sensor and light emitting diode package ofFIG. 7 . -
FIG. 8 is a side view of the housing end cap. -
FIG. 8A is a perspective view of the other side, i.e., the wetted side, of the housing end cap illustrated inFIG. 8 . -
FIG. 9 is a front view of the gate of the first embodiment. -
FIG. 9A is a cross-sectional view taken along thelines 9A-9A ofFIG. 9 . -
FIG. 10 is a front view of the left end cap of the filter. -
FIG. 10A is cross-sectional view of the left end cap of the filter taken along thelines 10A-10A ofFIG. 10 . -
FIG. 11 is a perspective view of the plunger used in conjunction with the lever and elastomeric ball valve. -
FIG. 11A is a another perspective view of the plunger used in conjunction with the lever and elastomeric ball valve. -
FIG. 11B is a top view of the plunger. -
FIG. 11C is a cross-sectional view of the plunger taken along thelines 11C-11C ofFIG. 11B . -
FIG. 11D is a cross-sectional view taken along thelines 11D-11D ofFIG. 11B . -
FIG. 12 is a front view of the ball valve. -
FIG. 12A is a cross-sectional view taken along thelines 12A-12A ofFIG. 12 . -
FIG. 13 is a top view of the lever used to operate the plunger of the first embodiment. -
FIG. 13A is a cross-sectional view of the lever taken along thelines 13A-13A ofFIG. 13 . -
FIG. 13B is a perspective view of the underside of the lever ofFIG. 13 . -
FIG. 14 is a front view of the fountain head. -
FIG. 14A is a cross-sectional view taken along thelines 14A-14A of the fountain head ofFIG. 14 . -
FIG. 15 is an exploded perspective view of a second embodiment of the invention. -
FIG. 16 is a perspective view of a second embodiment of the water filtration device. -
FIG. 16A is a perspective view of a second embodiment of the water filtration device with the valve handle pulled forward. -
FIG. 17 is a cross-sectional view of the second embodiment of the water filtration device taken along the lines 17-17 ofFIG. 16 . -
FIG. 17A is a cross-sectional view of the second embodiment of the water filtration device similar toFIG. 17 except the gate is shown rotated clockwise in the flow condition. -
FIG. 18 is a perspective view of the front housing of the second embodiment. -
FIG. 18A is a cross-sectional view taken along thelines 18A-18A ofFIG. 18 . -
FIG. 18B is a cross-sectional view taken along thelines 18B-19B ofFIG. 18 . -
FIG. 18C is a top view of the front housing of the second embodiment. -
FIG. 18D is a rear perspective view of the front housing of the second embodiment of the water filtration device. -
FIG. 18E is a cross-sectional taken along thelines 18E-18E ofFIG. 16 with the flow diverter valve inserted in the front housing in a first position, bypass position. -
FIG. 18F is a cross-sectional view taken along thelines 18F-18F ofFIG. 16A with the flow diverter valve inserted in the front housing in a second position which directs flow into the filter. -
FIG. 19 is a front perspective view of the filter housing of the second embodiment of the water filtration device. -
FIG. 19A is a bottom view of the of the filter housing of the second embodiment of the water filtration device. -
FIG. 19B is a cross-sectional view taken along thelines 19B-19B ofFIG. 19A . -
FIG. 19C is a cross-sectional view taken along thelines 19C- 19C ofFIG. 19C . -
FIG. 19D is a left side view, the open end view, of the filter housing of the second embodiment of the water filtration device. -
FIG. 20 is a front side view of the end cap of the housing of the second embodiment of the water filtration device. -
FIG. 20A is a right side view of the end cap ofFIG. 20 . -
FIG. 20B is a perspective view of the end cap ofFIG. 20 . -
FIG. 20C is a view of the left side of the end cap ofFIG. 20 . -
FIG. 20D is another perspective view of the end cap. - A better understanding of the drawings will be had when reference is made to the Description of the Invention and Claims which follow hereinbelow.
- Referring to
FIG. 1 , an exploded assembly view of a first embodiment of thewater filtration device 100, the various components of the single-use faucet mounted water filter are shown.Filter 113 is illustrated having alongitudinal bore 129 therethrough.Filter 113 is illustrated without a filter pre-wrap in this view but such apre-wrap 495 is specifically within the scope of this invention and is illustrated inFIGS. 4G and 4H . The filter is preferably a carbon block but may be a fiber bundle or granular activated carbon. Further, the carbon block may include bacteriastic materials, ion exchange resins and zeolites to assist in its filtration activity. End caps 114 and 115 are affixed to said filter with a hot melt adhesive applied to the entire mating surfaces ofend caps dowel 130A onright end cap 130. Oncefilter 113 is affixed to end caps offilter filter housing 101. End caps 114, 115 include peripheral seal portions which sealannulus 301. SeeFIG. 3 for example. O-rings water entering annulus 301 flow throughfilter 113 and does not bypass the end caps 114, 115 and migrate intochamber 350. See,FIG. 3D . To ensure that the subassembly is properly oriented, gate hinges 132, 132A must be aligned in relation to amark 160 on the filter housing as the subassembly is inserted into thefilter housing 101. Gate hinges 132, 132A are properly positioned when their axis is parallel to the earth or parallel to a tangent of the earth's surface. - Referring to
FIG. 5F , the left side view (open end view) of thefilter housing 101 of the first embodiment of the water filtration device, the concaveright side wall 508 of thefilter housing 101 is illustrated along with moldedribs 515. In this the first embodiment the diameter of thefilter housing 101 is approximately 1.6 inches and the length of the filter housing as viewed, for example, inFIGS. 5 and 5 A, is approximately 4.2 inches. Other dimensions may be utilized in the construction of water filtration devices as taught herein without departing from the spirit and scope of the invention. When the filter subassembly is inserted into the filter housing the right end cap abutsribs 515. -
Gate 118 is rotatably affixed to gate hinges 132, 132A by inserting prongs orknobs hinges gate 118 when water pushes against it as it exits the filter. As will be explained in more detail hereinafter,gate 118 swings (rotates) in a clockwise direction about its axis of rotation (seeFIGS. 3B and 3C ) upon the application of pressure caused by water flow through thefilter 113 and thelongitudinal bore 129 therein. - Referring to
FIGS. 1 and 3 ,gate 118 includes amagnet 117 which is press fit into arecess 134 in the gate and hermetically sealed with either hot melt adhesive or potting compound.FIG. 3 is across-sectional view 300 of the first embodiment of the water filtration device taken along the lines 3-3 ofFIG. 2 . Presence or absence ofmagnet 117 is sensed by reed switch (reed relay) 135.Housing end cap 102 includesspacers FIG. 8A , a perspective view of the end cap to best view thespacer 142 which is not well illustrated in the exploded assembly view ofFIG. 1 .Spacers housing end cap 102 with respect to theleft end cap 114 of the filter. Oncehousing end cap 102 is inserted into thefilter housing 101,spacers filter 113,left end cap 114 andright end cap 115 does not migrate leftwardly (SeeFIG. 3 ) too far and remains in proximity to themold ribs 515 of the interior of the housing.Housing end cap 102 includes a taperedportion 190 for insertion into thefilter housing 101. A chamber is formed between theend cap 114 and theclosed end 803A of thehousing end cap 102. See,FIG. 3 . Water is expelled frompassageway 141 in theleft end cap 114 of the filter housing and exerts a force againstgate 118 causing it to rotate in a clockwise direction. Asgate 118 rotates in the clockwise direction themagnet 117 is urged toward the reed switch 135 (reed relay) causing it to effectively close which starts the electronic timer withinelectronic package 112 to continuously measure the time when themagnet 117 is in proximity to the switch. The electronic package (electric circuit or integrated circuit) measures the cumulative time of flow through the filter and outputs signals to the light emitting diode (LED) indicating filter performance. The LED indicates three colors representative of cumulative filter usage one of which indicates that the water filtration device should be discarded. The electric circuit outputs three discrete signals to the light emitting diode. - The electronic package is secured in a
dry well 170 which in turn is secured and closed byend plate 116. After thehousing end cap 102 is installed it is welded to thefilter housing 101. Theend plate 116 is glued or ultrasonically welded to thehousing end cap 102. That is, thehousing end cap 102 is welded to the filter housing and theend plate 116 is welded or glued to thehousing end cap 102.Reference numeral 139 represents the raised portions of theend plate 116 which are ultrasonically welded or glued to thehousing end cap 102. - Referring to
FIG. 3 again,reference numerals filter housing 101. Referring toFIG. 3D ,elastomeric seal 375 acts as an additional optional seal which resides betweenperipheral edge portions elastomeric seal 376 acts as an additional optional seal which resides betweenperipheral edge portions - Still referring to
FIG. 1 ,aperture 137 permits light emittingdiode 136 which stems from theelectronic package 112 to pass therethrough. A small amount of potting compound may be used around the light emitting diode to seal any space between the diode and theaperture 137 when the light emitting diode is installed in place. Theelectronic package 112 and the substrate upon which the electronics are mounted are housed in a dry space in thehousing end cap 102. - Referring to
FIGS. 1 and 5 , thefilter housing 101 including itsinlet 125, filteredoutlet 107A, and filteredoutlet 180 are illustrated. Filteredoutlet 107A always expels filtered water whenever water enters thefilter housing inlet 125. See,FIG. 4H .Inlet 125 is generally cylindrically shaped and includes arecess 126 for receiving an O-ring seal 502 and apassageway 505 for conducting unfiltered water to the interior of the filter housing so that it can be filtered byfilter 113.Filter 113 is a carbon block filter and it is necessary that the water to be filtered have a certain residence time in contact with the filter so that impurities therein can be removed. - The preferred materials of the
front housing 103, filterhousing 101 andhousing end cap 102 are ABS (acrylonitrile butadiene styrene) plastic although other plastics may be used. The preferred adhesive to be used for securing the end caps 114, 115 to the filter is a hot melt adhesive. The gate material is HDPE (high density polyethylene). End caps 114, 115 are also HDPE and the material used for sealing.Lever 122 is preferably an acetyl material. -
FIG. 5 is afront perspective view 500 of thefilter housing 101 of the first embodiment of the water filtration device, i.e., a bathroom filter.FIG. 5 illustrates aninlet surface 504 adapted to receive acorresponding mating surface 190 from thehousing end cap 102. See,FIG. 1 to identify thecorresponding mating surface 190 on thehousing end cap 102. - Referring again to
FIG. 5 , thefilter housing 101 includes a recessedregion 501 for receiving thefront housing 103 as best seen inFIGS. 1, 2 and 4G. Engagement pins 127, 128 assist in positioning thefront housing 103 with respect to the recessedregion 501 for ultrasonic welding thereto. It is the ultrasonic welding of thefront housing 103 to the filter housing which secures the parts together and makes them into an integral unit. -
Pins receptacles FIG. 4D , arear perspective view 400D of the front housing of the first embodiment (bathroom filter) is illustrated along with thereceptacles Reference numerals front housing 103.Joint 421 is welded to thefilter housing 101. Further, referring toFIGS. 4G and 5 , O-ring seal 502 which resides inrecess 126 mates withcylindrical recess 410 in thefront housing 103 as illustrated inFIG. 4D to prevent leakage of water as it is being directed into the filter housing as will be explained hereinbelow. -
FIG. 5A is afront view 500A of thefilter housing 101 of the first embodiment of the water filtration device. Theright end 508 is closed and is convexly shaped when viewed from the outside of the filter housing. Viewing the interior of theright end 508 as inFIG. 5F , it is shaped concavely. During assembly of the device, thewater filter 113 with end caps attached thereto is inserted from the left side, the open side, of thefilter housing 101. -
FIG. 5B is across-sectional view 500B of the filter housing taken along thelines 5B-5B ofFIG. 5A .FIG. 5B provides a good illustration ofrecess 126 ininlet 125 and ofpin 128.Outlets FIG. 5B . -
FIG. 5C is across-sectional view 500C of the filter housing taken along thelines 5C-5C ofFIG. 5A .Outlet port 180 is illustrated in cross-section as having twodiametrical sections outlet port 107A is illustrated as having twodiametrical sections -
FIG. 5D is across-sectional view 500D of the filter housing taken along thelines 5D-5D ofFIG. 5A .FIG. 5D illustrates the recessedregion 501 infilter housing 101. Also illustrated inFIG. 5D is theinlet 125 havingpassageway 505 therein. -
FIG. 5E is abottom view 500E of the filter housing of the first embodiment of the water filtration device illustratingdiametrical portions outlet 107A.FIG. 5E illustrates thatoutlet 107A resides generally forwardly in the filter housing.Outlet 107A includesspout 107 which is affixed through an ultrasonic weld or by gluing same to thefilter housing 101. See,FIG. 1 . -
FIG. 2 is aperspective view 200 of a first embodiment of the water filtration device. Referring toFIGS. 1, 2 , 4, and 4E,collar lock 105 is inserted withincollar 104 and is welded to surface 401 offront housing 103.FIG. 4 is anenlargement 400 of the front housing of the first embodiment of the water filtration device.FIG. 4E is across-sectional view 400E of thecollar 104,collar lock 105 andscreen 110.Screen 110 includes an elastomeric generally circular periphery and a convexly shapedscreen portion 110A.Collar 104 may rotate with respect tocollar lock 105 in the connection and disconnection process with a faucet. The faucet (not shown) seals on the elastomeric portion of thescreen 110.Screen 110 assists in removing large particulate matter. - Referring still to
FIG. 2 ,front housing 103 is illustrated in its assembled condition welded to thefilter housing 101. Valve and valve handle 108 are illustrated in the first or bypass position.FIG. 4G is across-sectional view 400G taken along thelines 4G-4G ofFIG. 2 with theflow diverter valve 108 inserted in the front housing in a first position, bypass position.Flow arrow 470 indicates the path flow will take through the front housing when the water bypasses the filter.FIG. 4H is across-sectional view 400H taken along thelines 4H-4H ofFIG. 2A with theflow diverter valve 108 inserted in the front housing in a second position which directs flow into the filter.Flow arrow 471 indicates the path of flow through the front housing when thediverter valve 108 is rotated counterclockwise when viewingFIG. 4H to a second position. Referring toFIG. 2A , valve and valve handle 108 are pulled forward to the second position when it is desired to filter the water. - Referring again to
FIGS. 4G and H,elastomeric seal 450 is illustrated as sealingpassageways valve 108.Passageway 610 is formed bywall 611 andpassageway 603 is formed bywall 605 which is horn shaped. See,FIG. 6 , aperspective view 600 of the valve and itshandle 108 which are used in both the first embodiment and the second embodiment of the water filtration device. The handle portion of the valve includes aninsert 109 which may glued to acorresponding recess 109A in the handle. See,FIG. 1 . -
FIG. 4A is across-sectional view 400A taken along thelines 4A-4A ofFIG. 4 illustrating the generallycylindrical wall 401 to which thecollar lock 105 is welded.FIG. 4E is across-sectional view 400E illustrating thecollar lock 105 secured to thewall 401 with thecollar 104 being rotatable and movable slightly vertically for engagement with a faucet.Screen 110 is also illustrated inFIG. 4A . - Referring again to
FIG. 4A ,valve 108 is not shown therein so as to view the valve stop 407 which controls the rotation of the valve between its first (bypass position) and its second (filter) position.Valve cavity 430 is tapered as it extends inwardly as indicated bycircular lines FIGS. 4A and 4B .Ports valve cavity 430.Water outlet 409 conveys water to be filtered when the front housing is nonremovably affixed to thefilter housing 101 and thevalve 108 is in its second position.FIG. 4B is across-sectional view 400B taken along thelines 4B-4B ofFIG. 4 and also illustrates the taper ofvalve cavity 430. - Referring again to
FIGS. 4A and 4B ,recess 416 is illustrated for receiving aseal 640 on thevalve 108 illustrated inFIG. 6 . Bypass port orpassageway 414 is illustrated inFIGS. 4A and 4B . Stop 407 is also illustrated inFIG. 4B as isrecess 410 for receivinginlet 125 of thefilter housing 101. Referring toFIG. 4A mold aperture 415 from the molding process is illustrated in cross section.FIG. 4C is atop view 400C of thefront housing 103 of the first embodiment and also illustrates theports -
FIG. 4 is anenlargement 400 of thefront housing 103 of the first embodiment of the water filtrationdevice illustrating wall 401 to which thecollar lock 105 is welded.Ports floor 404 are shown in the top of the housing as aremold openings 402.Recess 416 invalve cavity 431 is shown as isrim 406 which is welded to thefilter housing 101.Recess 416 receivesseal 640 onvalve 108 so as to prevent leakage aboutvalve 108. - Referring again to
FIGS. 1 and 4 A,bottom portion 103A of the front housing is illustrated along withbore 422 having steppedportions Bore 422 receivesaerator assembly 111/111A and spout 106 secures the aerator assembly in place as it is welded to thebottom portion 103A of thehousing 103. See,FIG. 4F , across-sectional view 400F of theaerator assembly 111/111A mounted into the front housing. - Referring to
FIGS. 3-3D ,reference numerals filter end caps filter housing 101. Referring again toFIGS. 1 and 3 ,second outlet 180 in thefilter housing 101 is disclosed.Alignment mark 160 is also illustrated well inFIG. 1 and it is this mark which is used during assembly to ensure that the leftfilter end cap 114 and hinges 132/132A are positioned such that the axis of the hinges are parallel to theearth enabling gate 118 to swing freely upon the application of pressure thereto and not to bind.Plunger 120 having apassageway 120A therein fits somewhat snugly withinsecond outlet 180 and is slidingly movable therein.Lever 122 resides in engagement with theplunger 120 such that theplunger 120 andlever 122 move together. Referring toFIG. 2 ,lever 122 is hinged and pivotal on prongs orprotrusions 138 of thehousing end cap 102. Likelever 108,lever 122 has adecorative insert 123 which resides in a corresponding recess.Fountain head 119 resides in and throughpassageway 122A inlever 122.Fountain 119 includes apassageway 119A in communication withpassageway 120A inplunger 120.Passageway 120A is exposed to fluid under pressure inchamber 350 when the plunger is depressed bylever 122. -
Plunger 120 includes ashoe portion 1104.FIG. 11 is aperspective view 1100 of theplunger 120 used in conjunction with thelever 122 andelastomeric ball valve 121.Plunger 120 includes acylindrical portion 1103 and ashaft 1105 with ashoe 1104 on the end thereof. A flat extendingportion 1101 of the plunger resides against a corresponding surface of thelever 122. Ataper 1102 leads topassageway 120A. -
FIG. 11 A is a anotherperspective view 1100A of the bottom side of theplunger 120 used in conjunction with thelever 122 andelastomeric ball valve 121. Contouredside edge portion 1150 ofplunger 120 engageslever 122.Passageway 120A andbottom side 1106 of the flat extendingportion 1101 are best viewed inFIG. 11A .Spring 124 is operable between thebottom side 1106 of plunger and alip 570 of the filter housing. SeeFIG. 3 , across-sectional view 300 of the first embodiment of the water filtration device taken along the lines 3-3 ofFIG. 2 . InFIG. 3 , the filter is not operating meaning that thediverter valve 108 is in the bypass (first) position. -
FIG. 11B is atop view 1100B of theplunger 120 illustrating thepassageway 120A.FIG. 11C is across-sectional view 1100C of theplunger 120 taken along thelines 11C-11C ofFIG. 11B .FIG. 11D is across-sectional view 1100D taken along thelines 11D-11D ofFIG. 11B . -
FIG. 12 is afront view 1200 of theball valve 121.FIG. 12A is a crosssectional view 1200A taken along thelines 12A-12A ofFIG. 12 .Shoe 1104 is covered byelastomeric valve 121 which includes a cavity which is substantially reciprocally shaped to the shape of the shoe. Elastomeric valve ofboot 121 includes asurface 1202 which engages the interior of the filter housing aroundpassageway 506. See,FIGS. 5C and 3 . -
FIG. 3A is anenlargement 300A of a portion ofFIG. 3 illustrating thevalve 121 engaged with the inner wall ofhousing 101.Spring 124 is operable betweenfilter housing 101 andplunger 120 and urges the plunger and the lever upwardly when viewingFIGS. 3 and 3 A. - Still referring to
FIG. 3 , anannular space 301 between thefilter 113 and thefilter housing 101 is illustrated. Water occupies thisannular space 301 during operation of the filter. Water resides in this annulus and flows throughfilter 113 intopassageway 129 and outport 141 impinging upongate 118 rotating it clockwise. When the water filtration device of the first embodiment is operable, water will be expelled from bothoutlets lever 122 is depressed. If the lever is not depressed thenelastomeric valve 121 is seated against the curved inner surface of thefilter housing 101 and water will be expelled just from theoutlet 107A.Valve 121 is preferably elastomeric but may be made of other materials such as metal. Similarly, the filter housing may be made of metal if desired and the valve can be made of metal as well.FIG. 3 illustratesspacer 142 extending from theclosed end 803A ofhousing end cap 102 near the filterleft end cap 114.FIG. 8 is aside view 800 ofhousing end cap 102.Closed end 803 is a wall or boundary between the wettedchamber 350 and theelectronic package 112 andsensor 135.Guide ribs housing end cap 102.End plate 116 fits over the opening 811 of the end cap and is either welded or glued 139 to the end cap for hermetic sealing thereof. During assembly thelight emitting diode 136 is carefully placed within theaperture 137 first followed by theelectronic package 112 which is placed withinopening 811.FIG. 8A is aperspective view 800A of the other side, i.e., the wetted side, of the end cap illustrated inFIG. 8 .Sloped surface 190 which is welded to filterhousing 101 is illustrated inFIG. 8A . -
FIG. 3B is across-sectional view 300B of the first embodiment of the water filtration device with thefountain lever 122 depressed andvalve 121 off its seat. It will be noticed thatplunger 120 bends slightly whenlever 122 is depressed. This bending tends to seal the passageway denoted byreference numeral 506.Gate 118 is shown rotated clockwise due to water flow out ofpassageway 141. In this position,gate 118 andmagnet 117 are in proximity toreed switch 135.FIG. 3C is anenlargement 300C of a portion ofFIG. 3B and illustrates theflow path 391 of waterpast valve 121, throughpassageway 120A ofplunger 120 and through passageway 199A offountain 119. It will be noticed inFIGS. 3, 3A , 3B and 3C thatoutlet 107A is not shown therein as it is located fore (ahead) with respect to the cross-section of these drawing figures. -
FIG. 6 is aperspective view 600 of thevalve 108 and its handle which are used in both the first embodiment and the second embodiment of the water filtration device.FIG. 6 illustrates the underside (the side that is not exposed) when viewingFIG. 2 .Reference numeral 612 illustrates a cavity from the molding process.Reference numeral 609 indicates the handle portion of thevalve 108 andreference numeral 608 indicates the other or second end of thevalve 108.Ridges 602 engagestop 407 to limit the rotation of the valve between its first bypass position and its second filter position. A horn shapedpassageway 603 is formed bywall 605.Wall 606 creates anannulus 604 in which a seal (not shown inFIG. 6 ) is positioned. Aseal 450 is positioned inannulus 604 as indicated inFIGS. 4G and 4H . Agroove 607 resides in thevalve 108 for receiving a seal (not shown inFIG. 6 ) which prevents leakage of water from thevalve 108 when it inserted in thefront housing 103.FIG. 6A is aperspective view 600A of the exposed side of the valve and itshandle 108 as viewed inFIG. 2 .FIG. 6A illustratesseal 640 ingroove 607 for sealing thevalve 108 which is snap fit in the front housing. -
FIG. 7 is aperspective view 700 of theelectronic package 112,battery 701,sensor 135, leads 702, 703 and light emittingdiode 136 used in the first and second embodiments of the water filtration device. In thepreferred embodiment sensor 135 is a reed switch also known as a reed relay. However, those skilled in the art will readily recognize that different sensors based on capacitance principles, piezoelectric principles, or induction principles may be employed with some modifications.FIG. 7A is aside view 700A of the electronic package illustrated inFIG. 7 . -
FIG. 9 is afront view 900 ofgate 118 of the first embodiment.Recess 134 receivesmagnet 117 which actuatesreed switch 135 when in proximity therewith. Prongs orknobs 134 interengage corresponding hinges 134 as illustrated inFIGS. 1 and 3 .FIG. 9A is across-sectional view 900 taken along thelines 9A-9A ofFIG. 9 .FIG. 9A illustrates the contour of thegate 118 which includesfront 903 and rear 902 surfaces. Slopingsurface 904 diverges tobody 905 havingrecess 134 in whichmagnet 117 is housed.Locks 901secure magnet 117 in place. The magnet is installed by simply pushing on the magnet to orient it past thelocks 901 which are plastic and somewhat malleable enabling insertion of the magnet into the plastic. The magnet is then hermetically sealed with potting compound. -
FIG. 10 is afront view 1000 of theleft end cap 114 of thefilter 113.Hinges 132/132A are illustrated inFIGS. 10 and 10 A.FIG. 10A iscross-sectional view 1000A of the left end cap of the filter taken along thelines 10A-10A ofFIG. 10 illustrating thehinges 132/132A,passageway 141,dowel 1001, and protrusions 1002 and 1003 which slidingly seal with respect to the filter housing. Peripheral end portion such as the one denoted byreference numeral 131 are relatively soft and seal against the interior of the filter housing. -
FIG. 13 is atop view 1300 of thelever 122 used to operate theplunger 120 of the first embodiment.Reference numeral 1301 indicates a recess in which insert 123 is secured by adhesive. Apertures or hinges 140/140A engage prongs orprotrusions 138 for pivoting as previously described.FIG. 13A is a cross-sectional view of thelever 122 taken along thelines 13A-13A ofFIG. 13 also illustrates theaperture 140A.Cavities FIG. 13A .Cavity 1303 fits overflat portion 1101 ofplunger 120. See,FIG. 11 . -
FIG. 13B is aperspective view 1300B which illustrates the underside of thelever 122 ofFIG. 13 .Cavity 1303 andwall 1304 ofcavity 1303 are illustrated.Flat portion 1101 ofplunger 120 fits intocavity 1303. -
FIG. 14 is afront view 1400 of thefountain head 119illustrating flanges FIG. 14A is across-sectional view 1400A taken along thelines 14A-14A of thefountain head 119 ofFIG. 14 .Flange 1402 is snap-fit into place inlever 122 as is best seen inFIG. 3 .Fountain head 119 is made of plastic.Spring 124 is illustrated inFIG. 1 as operable betweenseat 570 andsurface 1106. See,FIGS. 3, 5C and 11C.FIG. 3 illustratesvalve 121 seated againstseat 330. -
FIGS. 1-14 are directed toward the first embodiment of the invention. Some of the uses of the first embodiment of the invention are in bathrooms, hotel and motel rooms. The device disclosed is small and convenient for storage on vacations and business trips.FIGS. 15-20 are directed toward the second embodiment of the invention. Use of the second embodiment include kitchen and bar uses. Both embodiments are designed such that the filter sits rearwardly with respect to the faucet so that access to the faucet and the filter is permitted. - The reference numerals used in
FIG. 15 correspond generally to the reference numerals used inFIG. 1 such that forexample reference numerals -
FIG. 15 is an explodedperspective view 1500 of a second embodiment of the invention.Filter housing 1501 may have, for example, a diameter of 2.40 inches and a length of approximately 3.90 inches. One of the principal differences in the kitchen filter of the second embodiment is that it has only one filteredoutlet 1507A whereas the bathroom unit has two filteredoutlets Filters FIGS. 4G and 4H . Adhesive is applied to thefilter end caps end caps rings chamber 1750. See,FIG. 17 . As in the case of the bathroom filter, theaerator assembly 1511 andspout 1506 are affixed in thefront housing 1503 as previously illustrated. As also in the case of the bathroom filter, thecollar lock 1505 is welded to thefront housing 1503 andcollar 1504 is permitted to rotate with respect to the collar lock. The screen assembly is inserted into the assembly atop the collar lock.Gate 1518 is slightly dimensionally different than thegate 118 previously described but it functions in the same way asgate 118.Spacers end cap 1502 and serve to ensure thatgate 1518 remains in alignment. -
Electronic package 112 is the same package used in the first embodiment. Reed switch 135 (or reed relay as it sometimes known) senses the proximity ofmagnet 1517 and the electronic package measures the total time of flow. Instead of a reed switch which is a magnetically coupled device, a capacitance based device or a pressure-sensitive device may be used instead. The pressure sensitive device would have to mounted in the closed end of thehousing end cap 1502. -
Valve 108 illustrated inFIG. 15 is the same valve used in the bathroom filter of the first embodiment.Spacers housing end cap 1502 assist in ensuring that the filter subassembly is in place. Referring toFIG. 17 , a gap (unnumbered) exists between thespacer 1543 and theend cap 1514 of the filter. Spacer limits the movement of the filter subassembly such that it cannot move leftwardly too far before engaging the spacers.End plate 1516 is glued or welded to thehousing end cap 102.Housing end cap 102 is glued or welded to thefilter housing 1501. -
FIG. 16 is aperspective view 1600 of the second embodiment of the water filtration device.FIG. 17 is across-sectional view 1700 of the second embodiment of the water filtration device taken along the lines 17-17 ofFIG. 16 .FIG. 17A is across-sectional view 1700A of the second embodiment of the water filtration device similar toFIG. 17 except thegate 1518 is shown rotated clockwise in the flow condition.Annulus 1701 is illustrated inFIG. 17A . Water resides in this annulus and flow thrufilter 1513 intopassageway 1529 and outport 1541 impinging upongate 1518 rotating it clockwise. - Referring to
FIGS. 15 and 17 ,filter end caps filter housing 1501. Although not shown inFIG. 17 , optional elastomeric O-ring seals similar to 375, 376 may be used between the peripheral end seals as illustrated inFIG. 3D . -
FIG. 18 is aperspective view 1800 of the front housing of the second embodiment.FIG. 18 employs reference numerals likeFIG. 4 .FIG. 18A is a cross-sectional view taken along thelines 18A-18A ofFIG. 18 .Reference numeral 1801 indicates the wall to which thecollar lock 1505 is welded andreference numeral 1804 indicates the floor upon which thecollar lock 1804 sits at the time it is welded. Mold recesses 1802 are from the molding process. Groove orrecess 1816 receives the seal from thevalve 108.Cavity 1831 receives thevalve 108. Referring toFIG. 18A , stop 1807A is illustrated which engagesridges 602 onvalve 108.Stop 1807A is also illustrated inFIG. 18B , a cross-sectional view taken along thelines 18B-18B ofFIG. 18 .Tapered bore 1812 is illustrated by the circular lines inFIG. 18A . -
Bore 1822 includes steppedportions Inlet 1808 is shown leading tovalve cavity 1831.Outlet 1814 andoutlet 1809 are also shown inFIG. 18A . Whenvalve 108 is positioned as illustrated inFIG. 18E inlet 1808 is connected tooutlet 1814 and the water passes throughfront housing 1503 and is expelled unfiltered.Flow arrow 1870 depicts the path of flow throughfront housing 1503. When thevalve 108 is positioned as illustrated inFIG. 18F inlet 1808 is connected tooutlet 1809 where it is directed into the filter byinlet 1525 of thefilter housing 1501. See,FIG. 16A a perspective view of a second embodiment of the water filtration device with the valve handle pulled forward.Flow arrow 1871 depicts the path of flow throughfront housing 1503 and intoinlet 1525 of the filter housing. - Referring to
FIG. 18B ,valve cavity 1831 is illustrated as is stop 1807A and thecross-sectional portion 1807 of the stop.Unfiltered outlet 1814 is also depicted.FIG. 18C is atop view 1800C of thefront housing 1503 of the second embodiment.FIG. 18D is arear perspective view 1800D of the front housing of the second embodiment of the water filtration device.FIG. 18D illustratesreceptacles pins reference numerals Joint 1821 is welded to the filter housing. -
FIG. 19 is afront perspective view 1900 of the filter housing of the second embodiment of the water filtration device.Surface 1904 engages the corresponding surface on thehousing end cap 1502.Recess 1901 engages the perimeter of the front housing.FIG. 19A is abottom view 1900A of the of thefilter housing 1501 of the second embodiment of the water filtration device.FIG. 19B is across-sectional view 1900B taken along thelines 19B-19B ofFIG. 19A illustrating port 1907 from which filtered water is expelled. -
FIG. 19C is across-sectional view 1900C taken along thelines 19C-19C ofFIG. 19C illustrating passageway 1905 ininlet 1525 of thefilter housing 1501.FIG. 19D is aleft side view 1900D, the open end view, of thefilter housing 1501 of the second embodiment of the water filtration device illustrating mold prongs in the end housing. These prongs orribs 1906 restrict the insertion depth of the filter sub assembly. -
FIG. 20 is afront side view 2000 of the end cap of thehousing 1502 of the second embodiment of the water filtration device.Surface 2007 of the housing end cap engagessurface 1904 of the filter housing and is welded or glued thereto.FIG. 20A is aright side view 2000A of the end cap ofFIG. 20 illustrating theclosed end 2003.FIG. 20B is aperspective view 2000B of the end cap ofFIG. 20 illustrating the closed end andspacers FIG. 20C is a view 2000C of the left side of the end cap ofFIG. 20 illustrating supports 2001, 2002 and 2010 which restrict the movement of the electronic package in place.FIG. 20D is anotherperspective view 2000D of the end cap illustrating thehousing 2011 in which the electronic package resides. - To assemble the water filtration devices, insert the aerator into the through spout and then insert the through spout and ultrasonically weld the aerator/spout assembly to the front housing. Place the threaded collar into the seat on top of the front housing and press the lock collar through the threaded collar and seat the lock collar into the housing. Clamp and ultrasonically weld the lock collar to the front housing.
- Insert the filtered spout into the filter housing and clamp and weld it to the filter housing. Insert the front housing into position with respect to the filter housing and then clamp and ultrasonically weld it to the filter housing.
- A prefilter may be wrapped around the filter and sealed using the hot seal method. Next, the left and right end caps with adhesive applied to the contact surfaces thereof are inserted in the filter. Uniform pressure is applied to the left and right
filter end caps - Next, the
gate housing end cap - The lever is installed by snapping it into place in the valve cavity. To install the end of life electronic package, the light emitting diode is inserted into and through the
aperture 137. Optionally, adhesive may be used when installing the diode in theaperture 137 to secure it into position and to ensure that the diode is hermetically sealed. The electronic package is installed into the reservoir in the open end of the housing end cap with the glass reed switch facing inwardly.End plate - The materials which are ultrasonically welded should be amenable to welding such as ABS or other plastics.
- The invention has been described herein by way of example only. Those skilled in the art will readily recognize that changes and modifications may be made to the invention without departing from the spirit and scope of the appended claims which follow hereinbelow.
Claims (5)
1-13. (canceled)
14. A single use water filtration device comprising a filter subassembly residing in a filter housing; said filter subassembly comprising a filter and end caps affixed to said filter, said end caps of said filter each comprise peripheral seal portions for sealing said filter subassembly ensuring that water flows into and through said filter.
15. A single use water filtration device as claimed in claim 14 wherein each of said peripheral seal portions include soft plastic engaging said filter housing.
16. A single use water filtration device as claimed in claim 14 wherein each of said peripheral seal portions comprise two radially extending walls in engagement with said filter housing and an elastomeric O-ring seal extending between said walls and extending around the circumference of said peripheral seal portions of said end caps.
17-63. (canceled)
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US11/256,403 US20060032795A1 (en) | 2002-09-09 | 2005-10-21 | Single-use long-life faucet-mounted water filtration devices |
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US11/255,670 Abandoned US20060037893A1 (en) | 2003-07-03 | 2005-10-21 | Single-use long-life faucet-mounted water filtration devices |
US11/256,403 Abandoned US20060032795A1 (en) | 2002-09-09 | 2005-10-21 | Single-use long-life faucet-mounted water filtration devices |
US11/255,715 Abandoned US20060076280A1 (en) | 2002-09-09 | 2005-10-21 | Single-use long-life faucet-mounted water filtration devices |
US11/256,133 Abandoned US20060032794A1 (en) | 2002-09-09 | 2005-10-21 | Single-use long-life faucet-mounted water filtration devices |
US11/256,064 Abandoned US20060032792A1 (en) | 2002-09-09 | 2005-10-21 | Single-use long-life faucet-mounted water filtration devices |
US11/256,132 Abandoned US20060032793A1 (en) | 2002-09-09 | 2005-10-21 | Single-use long-life faucet-mounted water filtration devices |
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US11/255,670 Abandoned US20060037893A1 (en) | 2003-07-03 | 2005-10-21 | Single-use long-life faucet-mounted water filtration devices |
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US11/256,133 Abandoned US20060032794A1 (en) | 2002-09-09 | 2005-10-21 | Single-use long-life faucet-mounted water filtration devices |
US11/256,064 Abandoned US20060032792A1 (en) | 2002-09-09 | 2005-10-21 | Single-use long-life faucet-mounted water filtration devices |
US11/256,132 Abandoned US20060032793A1 (en) | 2002-09-09 | 2005-10-21 | Single-use long-life faucet-mounted water filtration devices |
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US20060032794A1 (en) * | 2002-09-09 | 2006-02-16 | William Warren | Single-use long-life faucet-mounted water filtration devices |
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US20110303618A1 (en) * | 2008-10-22 | 2011-12-15 | Glenn Cueman | Reusable water filter systems and methods |
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USD1018771S1 (en) | 2020-03-06 | 2024-03-19 | Pentair Residential Filtration, Llc | Filtration system |
Also Published As
Publication number | Publication date |
---|---|
US20060032792A1 (en) | 2006-02-16 |
US20060032793A1 (en) | 2006-02-16 |
US20060076280A1 (en) | 2006-04-13 |
US20060037893A1 (en) | 2006-02-23 |
JP2007523736A (en) | 2007-08-23 |
US7258781B2 (en) | 2007-08-21 |
US20060032794A1 (en) | 2006-02-16 |
CN1798597A (en) | 2006-07-05 |
CA2624257A1 (en) | 2005-01-27 |
CA2509813C (en) | 2009-01-06 |
CA2509813A1 (en) | 2005-01-27 |
AU2004257651A1 (en) | 2005-01-27 |
WO2005007268A1 (en) | 2005-01-27 |
EP1697019A4 (en) | 2007-03-14 |
US20040069696A1 (en) | 2004-04-15 |
EP1697019A1 (en) | 2006-09-06 |
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