US20020170926A1 - Two-component cartridge system - Google Patents
Two-component cartridge system Download PDFInfo
- Publication number
- US20020170926A1 US20020170926A1 US09/861,971 US86197101A US2002170926A1 US 20020170926 A1 US20020170926 A1 US 20020170926A1 US 86197101 A US86197101 A US 86197101A US 2002170926 A1 US2002170926 A1 US 2002170926A1
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- United States
- Prior art keywords
- cap
- outlet
- cartridge
- cartridge system
- plug
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
- B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
- B05C17/0052—Accessories therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
- B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
- B05C17/00503—Details of the outlet element
- B05C17/00506—Means for connecting the outlet element to, or for disconnecting it from, the hand tool or its container
- B05C17/00513—Means for connecting the outlet element to, or for disconnecting it from, the hand tool or its container of the thread type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
- B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
- B05C17/00553—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with means allowing the stock of material to consist of at least two different components
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D81/00—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents
- B65D81/32—Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents for packaging two or more different materials which must be maintained separate prior to use in admixture
- B65D81/325—Containers having parallel or coaxial compartments, provided with a piston or a movable bottom for discharging contents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
- B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
- B05C17/01—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with manually mechanically or electrically actuated piston or the like
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0081—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor of objects with parts connected by a thin section, e.g. hinge, tear line
Definitions
- the present invention relates to two-component cartridge systems for viscous fluids, and more particularly to a resealable two-component cartridge for storing and dispensing reactive materials that are stored separately and mixed upon expulsion from the cartridge.
- Dual dispenser cartridges for two-component reactive material systems such as epoxy glue, molding compounds, foams and sealants are known and typically have a pair of parallel conjoined syringes, i.e., having a pair of barrels for independently storing two different components and a corresponding pair of conjoined plungers that are slidable in the barrels in piston fashion.
- the plungers are simultaneously pushed into the pair of parallel conjoined barrels, the two different materials of the two-component system are simultaneously and proportionally ejected at the outlet end of the syringe pair.
- the ejecta In simple, non-commercial systems, the ejecta is most likely to be deposited upon a surface whereon it can be mixed, e.g., by a paddle.
- Commercial systems typically utilize a nozzle which is threaded onto the outlet and which may include a static mixer. In either case, it remains an objective to improve the simplicity and economy of design of the cartridge, to provide an effective cap that can be removed and replaced to store unused materials and to maintain the separation of chemically reactive components until they are dispensed for their intended purpose, i.e., to prevent cross-contamination.
- Cross-contamination is known to result in the unintentional chemical reaction between the reactive components resulting in plugging of the cartridge and spoilage of the contents.
- the present invention includes a cartridge system for simultaneously dispensing two component materials with a cartridge having a pair of reservoirs, each for holding one of the two component materials.
- the cartridge has an outlet with two passageways therein, a first of the two passageways communicates at one end with the first reservoir and the second of the two passageways communicates at one end with the second reservoir.
- the cartridge system includes a cap having a pair of plugs extending from a surface thereof. The pair of plugs are attached to the outlet with a first of the plugs sealing the first passageway and a second of the plugs sealing the second passageway.
- the first and second plugs are detachable from the outlet to permit dispensing the component materials and are reinsertable into the first and second passageways, respectively, to reseal the cartridge after the materials have been dispensed.
- FIG. 1 is a perspective view of a dual-cylinder cartridge in accordance with an exemplary embodiment of the present invention
- FIG. 2 is an enlarged side view of the outlet end of the cartridge of FIG. 1;
- FIG. 3 is an enlarged front view of the outlet end of the cartridge of FIG. 1;
- FIG. 4 is a cross-sectional view of the cartridge shown in FIG. 3, taken along section lines IV-IV and looking in the direction of the arrows;
- FIG. 5 is an enlarged cross-sectional view of the cartridge shown in FIG. 4, showing the connection of the cap portion of the cartridge to the cartridge outlet;
- FIG. 6 is an enlarged cross-sectional view like FIG. 5, but showing the position of a replaceable cap after the cap has been removed for expelling a portion of the contents of the cartridge and replaced for storage of the remainder of the contents of the cartridge;
- FIG. 7 is an exploded perspective view of the outlet end of a cartridge in accordance with a first alternative embodiment of the present invention.
- FIGS. 8 a - 8 c are perspective views of the outlet end of a cartridge in accordance with a second alternative embodiment of the present invention with the cap portion in various positions relative to the cartridge;
- FIG. 9 is an exploded perspective view of a cartridge/ejector gun assembly in accordance with a third exemplary embodiment of the present invention.
- FIGS. 1 and 2 show a dual cylinder cartridge 10 having a pair of cylinders 12 , 14 for storing two different components, such as the two reactive compounds used in epoxy 5 glue or molding compound.
- a pair of plungers 16 , 18 slide within the cylinders 12 , 14 for ejecting the contents through a static mixer (See FIG. 9). Alternatively, the contents may be ejected directly onto a substrate in certain simple, non-commercial applications.
- the plungers 16 , 18 are mechanically conjoined and/or are simultaneously, activated, e.g., as shown in FIG. 9 and described below. In simple domestic glue dispensers, the plungers 16 , 18 may be conjoined by a common push pad.
- FIG. 1 While two, cylindrical cylinders 12 , 14 are shown in FIG. 1, a greater number of cylinders could be employed and they could have a non-circular cross-sectional shape, e.g., octagonal or hexagonal, all within the intended scope of the present invention.
- the cylinders 12 , 14 are mechanically joined at the top by a bridge plate 20 from which extends a common outlet 22 .
- a lower bridging tab 24 mechanically connects the cylinders 12 , 14 at the end distal to the outlet 22 .
- the outlet 22 has a cap 26 which maintains an air tight seal to preserve the contents of both cylinders 12 , 14 until the cap 26 is removed to expel the contents.
- the cap 26 has indicia 28 , 30 indicating orientation relative to the contents of the cylinders 12 , 14 , which are also signified by matching indicia 32 , 34 on the bridge plate 20 .
- the outlet 22 has threads 36 to facilitate threading a specialized nozzle (see FIG. 9) thereon, e.g., one having an elongated conical shape to permit applying the compound(s) dispensed into a hard-to-reach area.
- FIG. 2 shows that the cap 26 may be provided with indicia 38 on the side thereof matching that provided on the top at 30 .
- the same type of indicia 38 may be provided on the opposite side of the cap 26 (but bearing a similarity to indicia 28 ).
- FIG. 3 shows that the outlet 22 is divided into two separate conduits or passageways 54 , 56 by a divider wall 55 (see FIG. 4) to permit the compounds separately stored in cylinders 12 , 14 to be dispensed through the outlet 22 without mixing.
- the divider wall 55 may be provided with an internal hollow 40 (see FIG. 3) to decrease plastics usage and to decrease material stress and distortion associated with the injection molding process.
- the separation of the reactive components is also maintained by divider wall extension 42 that extends from the dispenser end 44 of the outlet 22 . Accordingly, even after the reactive compounds are ejected out of the outlet 22 , they are kept separated.
- commercial applications frequently utilize a nozzle/static mixer 394 , 395 (See FIG.
- the divider wall 42 can be formed to partially insert into the nozzle/static mixer 394 , 395 to insure that no mixing of components occurs prior to the entrance of the compounds into the nozzle/static mixer 394 , 395 .
- the cap 26 has a pair of separate nozzle plugs 46 , 48 that are inserted into separate outlet apertures, e.g., 168 , 170 (see FIG. 7) as will be seen and described below.
- the cap 26 also has an abutment flange 50 to limit the insertion depth of the plugs 46 , 48 .
- a grasping orifice 52 is provided on the cap 26 to permit the insertion of a screwdriver blade or another tool to provide leverage for breaking the cap 26 away from its integral mounting on the outlet 22 to eject the stored compounds.
- FIGS. 4 and 5 show that the outlet 22 has two separate passageways 54 , 56 communicating with cylinders 12 , 14 , respectively.
- the passageways 54 , 56 are plugged by plugs 46 , 48 , which are still connected to the outlet 22 , i.e., the cap 26 has not yet been removed.
- FIG. 5 shows that the plugs 46 , 48 ( 48 is shown) are connected to the dispenser end 44 of the outlet 22 by a frangible bridge 58 extending between the outlet dispenser end 44 and the plug 48 .
- the cap 26 is bent back and/or away from the outlet 22 in order to break the frangible bridge 58 and remove the plugs 46 , 48 from their position blocking the passageways 54 , 56 .
- the plugs 46 , 48 have a taper 60 on their peripheral edge to assist in inserting them back into the passageways 54 , 56 to reseal the dispenser 10 in the manner shown in FIG. 6.
- Each of the plugs 46 , 48 have an enlarged portion 62 terminating in a ledge 64 .
- FIG. 6 shows the cap 26 positioned on the outlet 22 with the plugs 46 , 48 extending into and sealing the passageways 54 , 56 .
- the cartridge 10 may be injection molded from polymers such as polypropylene or polyamide. It should be appreciated that the cap 26 shown in the foregoing figures and described above, works in conjunction with the divider wall extension 42 , viz., by bridging thereover. More particularly, a central hollow 66 disposed between the plugs 46 , 48 accommodates the divider wall extension 42 , both before and after removal and replacement of the cap 26 .
- FIG. 7 shows a first alternative embodiment of the present invention.
- the same reference numbers as were used above to refer to elements of the above-described embodiment shall be used but incremented by 100 , 200 , etc. to describe features having the same or similar form and function, unless otherwise noted.
- the passageways 154 , 156 terminate in outlet apertures 168 , 170 , respectively having unique shapes relative to one another.
- the plugs 146 , 148 have complementary shapes in order to be received within corresponding outlet apertures, 168 , 170 .
- the apertures 168 , 170 have different cross-sectional areas, which would be particularly suitable for a two-component system wherein the stoichiometric ratio of the first component to the second is not 1:1, e.g., 2:1, 3:1, etc. While the apertures 168 , 170 shown have different cross-sectional areas, this is not required. For example, the present invention could be practiced with apertures 168 , 170 having a different shape but the same cross-sectional area, e.g., circular and triangularly shaped apertures 168 , 170 .
- FIG. 8 a shows an outlet 222 with orientation features that allow the apertures 268 , 270 to be the same shape and still constrain cap 226 replacement orientation, i.e., such that the cap 226 only inserts into the outlet 222 in one selected orientation to prevent cross-contamination.
- the cap 226 has a depending orientation tab 272 that is accommodated in a mating notch 274 in the divider wall 242 , but only in the permissible resealing orientation. (Note that one of the plugs, viz., 248 in FIGS. 8 a and 8 b and 246 in FIG.
- FIG. 8 c has been cut away to permit visualization of the interaction between the tab 272 and the notch 274 .
- the notch 274 accommodates the tab 272 permitting the plug 246 to enter and reseal outlet aperture 268 .
- the alternative orientation of the cap 226 relative to the outlet 222 is shown in FIG. 8 c wherein the interference between the divider wall 242 (opposite to the notch 274 ) and the tab 272 prevents plug 248 from entering outlet aperture 268 . Because correct orientation is assured by the tab 272 and divider wall 242 with notch 274 , the apertures 268 , 270 may either be the same shape and dimensions or of different shapes and dimensions, as desired.
- FIG. 9 shows an dispenser gun 376 for ejecting the compounds contained in a two-component cartridge 310 and which has a cartridge tray 377 affixed to an actuator 378 .
- the actuator 378 is of conventional design, such as might be encountered in a common caulking gun having a friction or ratchet advance mechanism.
- the degree of advancement of the actuator mechanism is controlled by squeezing handles 379 , 380 , one or both of which moves relative to the other in a conventional manner.
- the present invention would work equally well with a hydraulic, compressed air or electromagnetic advance mechanism, e.g., as might be encountered on a production line.
- the ejector gun 376 has at least one actuator rod 381 and a piston rod 382 , 383 for each cylinder 312 , 314 , respectively.
- the actuator rod 381 can serve as a piston rod, e,g,. replacing 382 .
- the actuator rod 381 and piston rods 382 , 383 are conjoined at one end by a bridge bar 384 to which a pull knob 385 is attached., such that all rods 381 , 382 , 383 move simultaneously as an assembly.
- a piston plate 386 is attached to piston rod 383 at the end thereof proximate to the cartridge tray 377 .
- a second, larger piston plate 387 is affixed to the end of piston rod 382 and actuator rod 381 .
- the ejector gun 376 can be utilized for cartridges having cylinders 312 , 314 of the same or different diameters. As depicted in FIG.
- the cylinders 312 , 314 are the same diameter but they could be of different diameters for the purpose of dispensing reactive compounds in other than a 1:1 ratio.
- the larger of the cylinders 312 , 314 can be positioned proximate the larger piston plate 387 , with the smaller of the cylinders 312 , 314 positioned proximate piston plate 386 .
- the present invention does not require that the pistons 386 , 387 have different dimensions, i.e., they may have the same dimensions.
- the tray 377 is held to the actuator portion 378 by a plurality of fasteners 389 , by welding, gluing or other conventional means.
- the tray Distal to the actuator 378 , the tray has an end plate 390 with a cartridge docking cutout 391 for slideably receiving and embracing the cartridge 310 at the base of the outlet 322 .
- a cap removal tab 392 extends from an upper corner of the end plate 390 and has dimensions approximating the internal dimensions of the grasping orifice 352 provided in the cap 326 (See FIG.
- the cap removal tab 392 can be inserted into the grasping orifice 352 to exert a twisting force to snap the cap 326 off the outlet 322 to open the cartridge 310 .
- the removal tab 392 may be dimensioned relative to the grasping orifice 352 to have a friction fit therein such that cap 326 can be left on the removal tab 392 while the cartridge 310 is in use. In this manner, the cap 326 is not lost or subjected to contamination while the cartridge 310 is in use and may be readily retrieved for resealing the cartridge when ejecting is completed.
- a nozzle tip orifice 393 may be incorporated in the end plate 390 for aiding in the removal of portions of the nozzle tip. More particularly, a nozzle 394 , which may incorporate a static mixing element 395 (in dashed lines) is provided with a snap-off tip 396 . The tip 396 may be snapped off to control the outlet aperture size of the nozzle 394 , That is, the tip 396 has a predetermined outlet aperture size. When the tip 396 is snapped off, a larger diameter outlet aperture results. The nozzle tip orifice 393 accommodates the tip 396 therein and provides leverage over the tip 396 to aid in snapping it off.
- a cartridge support 397 extends up from the bottom of the tray 377 and inserts between the cylinders 312 , 314 to prevent lateral motion of the cartridge 310 to retain the cartridge in alignment with the motion of the piston plates 386 , 387 to maximize the transfer of force from piston plates 386 , 387 to expel the compound from the cartridge 310 .
Abstract
Description
- The present invention relates to two-component cartridge systems for viscous fluids, and more particularly to a resealable two-component cartridge for storing and dispensing reactive materials that are stored separately and mixed upon expulsion from the cartridge.
- Dual dispenser cartridges for two-component reactive material systems, such as epoxy glue, molding compounds, foams and sealants are known and typically have a pair of parallel conjoined syringes, i.e., having a pair of barrels for independently storing two different components and a corresponding pair of conjoined plungers that are slidable in the barrels in piston fashion. When the plungers are simultaneously pushed into the pair of parallel conjoined barrels, the two different materials of the two-component system are simultaneously and proportionally ejected at the outlet end of the syringe pair. In simple, non-commercial systems, the ejecta is most likely to be deposited upon a surface whereon it can be mixed, e.g., by a paddle. Commercial systems typically utilize a nozzle which is threaded onto the outlet and which may include a static mixer. In either case, it remains an objective to improve the simplicity and economy of design of the cartridge, to provide an effective cap that can be removed and replaced to store unused materials and to maintain the separation of chemically reactive components until they are dispensed for their intended purpose, i.e., to prevent cross-contamination. Cross-contamination is known to result in the unintentional chemical reaction between the reactive components resulting in plugging of the cartridge and spoilage of the contents.
- The problems and disadvantages associated with the conventional techniques and devices utilized to store and dispense two-component reactive material systems are overcome by the present invention which includes a cartridge system for simultaneously dispensing two component materials with a cartridge having a pair of reservoirs, each for holding one of the two component materials. The cartridge has an outlet with two passageways therein, a first of the two passageways communicates at one end with the first reservoir and the second of the two passageways communicates at one end with the second reservoir. The cartridge system includes a cap having a pair of plugs extending from a surface thereof. The pair of plugs are attached to the outlet with a first of the plugs sealing the first passageway and a second of the plugs sealing the second passageway. The first and second plugs are detachable from the outlet to permit dispensing the component materials and are reinsertable into the first and second passageways, respectively, to reseal the cartridge after the materials have been dispensed.
- For a better understanding of the present invention, reference is made to the following detailed description of an exemplary embodiment considered in conjunction with the accompanying drawings, in which:
- FIG. 1 is a perspective view of a dual-cylinder cartridge in accordance with an exemplary embodiment of the present invention;
- FIG. 2 is an enlarged side view of the outlet end of the cartridge of FIG. 1;
- FIG. 3 is an enlarged front view of the outlet end of the cartridge of FIG. 1;
- FIG. 4 is a cross-sectional view of the cartridge shown in FIG. 3, taken along section lines IV-IV and looking in the direction of the arrows;
- FIG. 5 is an enlarged cross-sectional view of the cartridge shown in FIG. 4, showing the connection of the cap portion of the cartridge to the cartridge outlet;
- FIG. 6 is an enlarged cross-sectional view like FIG. 5, but showing the position of a replaceable cap after the cap has been removed for expelling a portion of the contents of the cartridge and replaced for storage of the remainder of the contents of the cartridge;
- FIG. 7 is an exploded perspective view of the outlet end of a cartridge in accordance with a first alternative embodiment of the present invention;
- FIGS. 8a-8 c are perspective views of the outlet end of a cartridge in accordance with a second alternative embodiment of the present invention with the cap portion in various positions relative to the cartridge; and
- FIG. 9 is an exploded perspective view of a cartridge/ejector gun assembly in accordance with a third exemplary embodiment of the present invention.
- FIGS. 1 and 2 show a
dual cylinder cartridge 10 having a pair ofcylinders plungers cylinders plungers plungers cylindrical cylinders cylinders bridge plate 20 from which extends acommon outlet 22. Alower bridging tab 24 mechanically connects thecylinders outlet 22. Theoutlet 22 has acap 26 which maintains an air tight seal to preserve the contents of bothcylinders cap 26 is removed to expel the contents. Thecap 26 hasindicia cylinders indicia bridge plate 20. In this manner, the cap portions (to be shown and described below) that contact the components stored incylinders cap 26 is replaced, i.e., by reversing its original orientation. Theoutlet 22 hasthreads 36 to facilitate threading a specialized nozzle (see FIG. 9) thereon, e.g., one having an elongated conical shape to permit applying the compound(s) dispensed into a hard-to-reach area. As noted above, a nozzle containing a static mixer can also be employed. FIG. 2 shows that thecap 26 may be provided withindicia 38 on the side thereof matching that provided on the top at 30. The same type ofindicia 38 may be provided on the opposite side of the cap 26 (but bearing a similarity to indicia 28). - FIG. 3 shows that the
outlet 22 is divided into two separate conduits orpassageways cylinders outlet 22 without mixing. Thedivider wall 55 may be provided with an internal hollow 40 (see FIG. 3) to decrease plastics usage and to decrease material stress and distortion associated with the injection molding process. The separation of the reactive components is also maintained bydivider wall extension 42 that extends from thedispenser end 44 of theoutlet 22. Accordingly, even after the reactive compounds are ejected out of theoutlet 22, they are kept separated. As noted above, commercial applications frequently utilize a nozzle/static mixer 394, 395 (See FIG. 9) that is threadedly received and retained on theoutlet 22. Thedivider wall 42 can be formed to partially insert into the nozzle/static mixer static mixer cap 26 has a pair ofseparate nozzle plugs cap 26 also has anabutment flange 50 to limit the insertion depth of theplugs grasping orifice 52 is provided on thecap 26 to permit the insertion of a screwdriver blade or another tool to provide leverage for breaking thecap 26 away from its integral mounting on theoutlet 22 to eject the stored compounds. - FIGS. 4 and 5 show that the
outlet 22 has twoseparate passageways cylinders passageways plugs outlet 22, i.e., thecap 26 has not yet been removed. FIG. 5 shows that theplugs 46, 48 (48 is shown) are connected to thedispenser end 44 of theoutlet 22 by afrangible bridge 58 extending between theoutlet dispenser end 44 and theplug 48. To release the compound(s) contained within thecylinders cap 26 is bent back and/or away from theoutlet 22 in order to break thefrangible bridge 58 and remove theplugs passageways plugs taper 60 on their peripheral edge to assist in inserting them back into thepassageways dispenser 10 in the manner shown in FIG. 6. Each of theplugs portion 62 terminating in aledge 64. When theplugs passageways cartridge 10, the remnants of thefrangible bridge 58 extending from thedispenser end 44, clip overledge 64, holding thecap 26 in position and increasing the tightness of the seal made by thecap 26 to increase the length of time that the compounds stored in the cartridge can be kept without degradation. - FIG. 6 shows the
cap 26 positioned on theoutlet 22 with theplugs passageways cartridge 10 may be injection molded from polymers such as polypropylene or polyamide. It should be appreciated that thecap 26 shown in the foregoing figures and described above, works in conjunction with thedivider wall extension 42, viz., by bridging thereover. More particularly, acentral hollow 66 disposed between theplugs divider wall extension 42, both before and after removal and replacement of thecap 26. - FIG. 7 shows a first alternative embodiment of the present invention. In describing this alternative embodiment and subsequent alternative embodiments, the same reference numbers as were used above to refer to elements of the above-described embodiment shall be used but incremented by100, 200, etc. to describe features having the same or similar form and function, unless otherwise noted. In FIG. 7, the
passageways outlet apertures plugs cap 126 can only be replaced on thecartridge outlet 122 in one orientation, thereby preventing cross-contamination between the contents issuing frompassageways apertures apertures apertures apertures - FIG. 8a shows an
outlet 222 with orientation features that allow theapertures cap 226 replacement orientation, i.e., such that thecap 226 only inserts into theoutlet 222 in one selected orientation to prevent cross-contamination. More particularly, thecap 226 has a dependingorientation tab 272 that is accommodated in amating notch 274 in thedivider wall 242, but only in the permissible resealing orientation. (Note that one of the plugs, viz., 248 in FIGS. 8a and 8 b and 246 in FIG. 8c, has been cut away to permit visualization of the interaction between thetab 272 and thenotch 274.) As shown in FIG. 8b, thenotch 274 accommodates thetab 272 permitting theplug 246 to enter and resealoutlet aperture 268. The alternative orientation of thecap 226 relative to theoutlet 222 is shown in FIG. 8c wherein the interference between the divider wall 242 (opposite to the notch 274) and thetab 272 prevents plug 248 from enteringoutlet aperture 268. Because correct orientation is assured by thetab 272 anddivider wall 242 withnotch 274, theapertures - FIG. 9 shows an
dispenser gun 376 for ejecting the compounds contained in a two-component cartridge 310 and which has acartridge tray 377 affixed to anactuator 378. Theactuator 378 is of conventional design, such as might be encountered in a common caulking gun having a friction or ratchet advance mechanism. The degree of advancement of the actuator mechanism is controlled by squeezinghandles ejector gun 376 has at least oneactuator rod 381 and apiston rod cylinder actuator rod 381 can serve as a piston rod, e,g,. replacing 382. - The
actuator rod 381 andpiston rods bridge bar 384 to which apull knob 385 is attached., such that allrods piston plate 386 is attached topiston rod 383 at the end thereof proximate to thecartridge tray 377. A second,larger piston plate 387 is affixed to the end ofpiston rod 382 andactuator rod 381. In this manner, theejector gun 376 can be utilized forcartridges having cylinders cylinders cylinders larger piston plate 387, with the smaller of thecylinders proximate piston plate 386. The present invention does not require that thepistons - The
tray 377 is held to theactuator portion 378 by a plurality offasteners 389, by welding, gluing or other conventional means. Distal to theactuator 378, the tray has anend plate 390 with acartridge docking cutout 391 for slideably receiving and embracing thecartridge 310 at the base of theoutlet 322. Acap removal tab 392 extends from an upper corner of theend plate 390 and has dimensions approximating the internal dimensions of thegrasping orifice 352 provided in the cap 326 (See FIG. 3,reference number 52 for an enlarged view of a grasping orifice.) Given this relationship, thecap removal tab 392 can be inserted into thegrasping orifice 352 to exert a twisting force to snap thecap 326 off theoutlet 322 to open thecartridge 310. Theremoval tab 392 may be dimensioned relative to thegrasping orifice 352 to have a friction fit therein such thatcap 326 can be left on theremoval tab 392 while thecartridge 310 is in use. In this manner, thecap 326 is not lost or subjected to contamination while thecartridge 310 is in use and may be readily retrieved for resealing the cartridge when ejecting is completed. - A
nozzle tip orifice 393 may be incorporated in theend plate 390 for aiding in the removal of portions of the nozzle tip. More particularly, anozzle 394, which may incorporate a static mixing element 395 (in dashed lines) is provided with a snap-off tip 396. Thetip 396 may be snapped off to control the outlet aperture size of thenozzle 394, That is, thetip 396 has a predetermined outlet aperture size. When thetip 396 is snapped off, a larger diameter outlet aperture results. Thenozzle tip orifice 393 accommodates thetip 396 therein and provides leverage over thetip 396 to aid in snapping it off. Acartridge support 397 extends up from the bottom of thetray 377 and inserts between thecylinders cartridge 310 to retain the cartridge in alignment with the motion of thepiston plates piston plates cartridge 310. - It should be understood that the embodiments described herein are merely exemplary and that a person skilled in the art may make many variations and modifications without departing from the spirit and scope of the invention as defined in the appended claims. Accordingly, all such variations and modifications are intended to be included within the scope of the invention.
Claims (22)
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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US09/861,971 US6484904B1 (en) | 2001-05-21 | 2001-05-21 | Two-component cartridge system |
EP02746420A EP1389171B9 (en) | 2001-05-21 | 2002-05-20 | Two-component cartridge system |
PCT/US2002/015903 WO2002094681A1 (en) | 2001-05-21 | 2002-05-20 | Two-component cartridge system |
DE60226597T DE60226597D1 (en) | 2001-05-21 | 2002-05-20 | TWO-COMPONENT CARTRIDGE SYSTEM |
AT02746420T ATE395271T1 (en) | 2001-05-21 | 2002-05-20 | TWO-COMPONENT CARTRIDGE SYSTEM |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/861,971 US6484904B1 (en) | 2001-05-21 | 2001-05-21 | Two-component cartridge system |
Publications (2)
Publication Number | Publication Date |
---|---|
US20020170926A1 true US20020170926A1 (en) | 2002-11-21 |
US6484904B1 US6484904B1 (en) | 2002-11-26 |
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Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/861,971 Expired - Lifetime US6484904B1 (en) | 2001-05-21 | 2001-05-21 | Two-component cartridge system |
Country Status (5)
Country | Link |
---|---|
US (1) | US6484904B1 (en) |
EP (1) | EP1389171B9 (en) |
AT (1) | ATE395271T1 (en) |
DE (1) | DE60226597D1 (en) |
WO (1) | WO2002094681A1 (en) |
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Also Published As
Publication number | Publication date |
---|---|
ATE395271T1 (en) | 2008-05-15 |
EP1389171A1 (en) | 2004-02-18 |
EP1389171B9 (en) | 2008-10-08 |
US6484904B1 (en) | 2002-11-26 |
EP1389171B1 (en) | 2008-05-14 |
WO2002094681A1 (en) | 2002-11-28 |
DE60226597D1 (en) | 2008-06-26 |
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