WO2001078555A1 - System for producing anthropometric, adjustable, articulated beds - Google Patents
System for producing anthropometric, adjustable, articulated beds Download PDFInfo
- Publication number
- WO2001078555A1 WO2001078555A1 PCT/US2001/010888 US0110888W WO0178555A1 WO 2001078555 A1 WO2001078555 A1 WO 2001078555A1 US 0110888 W US0110888 W US 0110888W WO 0178555 A1 WO0178555 A1 WO 0178555A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- support bar
- bed
- adjustable bed
- fabricating
- cross bars
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G7/00—Beds specially adapted for nursing; Devices for lifting patients or disabled persons
- A61G7/002—Beds specially adapted for nursing; Devices for lifting patients or disabled persons having adjustable mattress frame
- A61G7/015—Beds specially adapted for nursing; Devices for lifting patients or disabled persons having adjustable mattress frame divided into different adjustable sections, e.g. for Gatch position
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C20/00—Head -, foot -, or like rests for beds, sofas or the like
- A47C20/04—Head -, foot -, or like rests for beds, sofas or the like with adjustable inclination
- A47C20/041—Head -, foot -, or like rests for beds, sofas or the like with adjustable inclination by electric motors
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C20/00—Head -, foot -, or like rests for beds, sofas or the like
- A47C20/04—Head -, foot -, or like rests for beds, sofas or the like with adjustable inclination
- A47C20/046—Head -, foot -, or like rests for beds, sofas or the like with adjustable inclination by means of a rack-and-pinion or like gearing mechanism
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47C—CHAIRS; SOFAS; BEDS
- A47C20/00—Head -, foot -, or like rests for beds, sofas or the like
- A47C20/08—Head -, foot -, or like rests for beds, sofas or the like with means for adjusting two or more rests simultaneously
Definitions
- the present invention relates to the field of beds and more particularly to beds which are adjustable for comfort.
- the object of the present invention to provide a system for producing anthropometric and quasi-anthropometric adjustable, articulating beds using a combined articulating and orbiculating motion that, in a complimentary manner, matches the articulation of human forms in all their individual variances within a given size range of five to seven feet tall, thus covering ninety-eight percent of the world population.
- the anthropometric type, adjustable articulating bed is matched to a particular human form by actual measurements of the intended user, using the link length measuring system, then applying the data in the construction of the bed. There are three measurements necessary to match the bed to the intended user: the overall height, the distance from the top of the head to the hip pivot point, and the distance from the hip pivot point to the knee pivot point.
- the overall height determines the proper frame and mattress length; the distance from the top of the head to the hip pivot point determines the location of the intended user in relationship to the head end of the mattress and the length of the torso supporting sections; and the distance from the hip pivot point to the knee pivot point determines the length of the thigh supporting sections. All other data required to produce the bed can be calculated.
- Upper bed frames and mattress lengths are made in four standard lengths: small, seventy-four inches; medium, eighty inches; large, eighty-six inches; and extra large, ninety-two inches.
- the small upper frame and mattress are suited for users five to five and one half feet tall; the medium frame and mattress is suited for users five and one half to six feet tall etc.
- an actuator having two motors, and two double reduction gears packaged in one split gear case; an articulating mechanism having components to articulate the lower legs, thighs, and increase the length of the thigh support sections when pivotally articulated upward; and two orbiculators which orbitally articulate the torso using a combined motion from the module.
- the actuator powers two parallel torque tubes that pass through the gear case at opposite ends, one powers the module, and the other powers the orbiculators.
- the torque tubes are connected to the module using two quick release type couplings and one coupling to each of the two orbiculators making the actuator "free floating" within the upper bed frame. Since the torque tubes are a fixed distance apart, the module and the orbiculators must also be a fixed distance apart.
- the actuators must also be made to match by having the torque tubes vary in length accordingly. Having established that a fixed relationship must exist in regard to the location of the actuator, the module, and the orbiculators, relative to each other as a unit, or "cluster", the cluster can be located variably within the bed frame to match the requirements of the intended user. This feature is mandatory in making an anthropometric or quasi-anthropometric bed and part of the present invention.
- anthropometric type beds The selection of materials and processes used to construct anthropometric type beds is important for several reasons: firstly, size, to produce beds ranging in length from seventy-four to ninety-two inches, weight and strength becomes a critical factor, thus engineered aluminum alloy extrusions are used extensively for frames and articulating support sections; secondly plastic extrusions are used for wear surfaces; (extrusions provide a way to make parts that are similar except for length); thirdly steel stampings are used where high stress is a factor, (these parts are usually plated with zinc).
- Aluminum alloy die-castings are used to make the actuator gear cases and the orbiculator gear cases that require a minimum amount of machining after casting and trimming. The orbiculator rotors are centrifugally cast, trimmed and used "as cast”.
- Quasi-anthropometric beds are identical to anthropometric except they are made to accommodate a particular group of people having incremental heights and having proportional common skeletal forms, or groups of people having proportional differences related to race or ethnography.
- the quasi-anthropometric beds are made using sizes and dimensions available from published sources like "Human Scale” by Henry Dreyfuss Associates, M I T Press or other human engineering studies.
- Demographics may become important especially in large U S cities. All quasi- anthropometric beds are pre-manufactured and selected at the point of sale. Anthropometric beds and mattresses are made for comfort by giving maximum body support, elimination of pressure points, and matched articulation to the intended user throughout the entire range of articulation.
- Figure 1 is a side elevational view of the top frame of this invention
- Figure 2 is top view of the top frame of this invention.
- Figure 3 is an end view of the top frame of this invention.
- Figure 4 is a perspective view of a cut section of an anthropometric bed shown in the supine or flat position.
- Figure 5 is a perspective view of a cut section of an anthropometric bed shown in a fully articulated position.
- Figure 6 is a side elevational view of the power mechanism of this invention.
- Figure 7 shows a section view of the articulating mechanism of this invention in the flat or zero position.
- Figure 8 shows a section view of the articulating mechanism of this invention in the thirty degree position.
- Figure 9 is an end view of the power mechanism of this invention.
- Figure 10 is an end view of the articulating mechanism of this invention.
- Figure 11 is a cross-sectional view of a right hand orbiculator showing the gearing and their motion.
- Figure 12 shows a right hand orbiculator in the flat or zero position.
- Figure 13 shows a right hand orbiculator in the thirty degree position.
- Figure 14 shows a right hand orbiculator in the sixty degree position.
- Figure 15 is an exploded view of a right hand orbiculator.
- Figure 16 is a view of a completely assembled right hand orbiculator.
- Figure 17 is a top view of the top view of the power mechanism of this invention .
- Figure 18 shows a schematic of the power distribution.
- Chart A is a diagram used to convert measurements of the human form to alpha-terms for use in solving construction formulas.
- Chart B is a link length chart of dimensions based on U S population sixty to eighty-four inches tall.
- Figures 1 , 2 and 3 illustrate the main frame 200 of this invention 100, which comprises a pair of longitudinal rails 201 , 202 and a pair of cross rails 203 attached at the ends of the longitudinal rails 201 , 202.
- Figure 4 is a perspective view of a cut section of the anthropometric bed 100 of this invention shown in the supine position.
- Figure 5 is a perspective view of a cut section of the anthropometric bed 100 of this invention shown in a fully articulated position.
- Supporting the main frame 200 is a pedestal base 300 which, in typical fashion, comprises legs, castors and cross members. There is nothing unique about the pedestal base 300. All beds have similar type bases 300.
- the mattress support has a number of cross bars 105 supporting four pads, - a thigh support pad 111 , a leg support pad 112, a coccyx support pad 113, and a lumbar support pad 114.
- the cross bars 105 should be of square cross section and hollow to reduce weight.
- the cross bars 105 are longer than the width of the frame 200. In this way, the bars can rest on the frame when the bed 100 is in the flat configuration.
- a skirt 106 is attached around the periphery of the cross bars 105 and pads 111 , 112, 113, 114 in order to keep the assembly together and provide a lip 107 for containing the mattress 102.
- the cross bars 105 underlying the coccyx support pad 113 are fastened directly to the frame 200.
- the other cross bars 105 are connected to a leg support bar 661 , a thigh support subaseembly 770, and a torso support bar 969.
- the thigh support subassembly 770 is extensible, via a mechanism to be described later, while the other support bars 661 , 969 are of fixed length.
- the thigh support subassembly 770 is pivotally attached at one end to a bracket 767 (pivot point 04 on Figures 7 and 8) and at the other to the end of the let support bar 661 (pivot point 02 on Figures 7 and 8). Since the bracket 767 is attached to the frame member 201 , the thigh support assembly 770 is effectively pivotally attached at one end to the frame 200. Pivot point 02 must be vertically directly under the knee pivot point of the user.
- Supporting and moving the leg and thigh support bars 661 , 770 is an articulating mechanism 700, which is attached to the frame 200.
- the purpose of the articulating mechanism is to tilt and leg and thigh support bars 661 , 770 up and down while extending and retracting the thigh support subassembly 770.
- Supporting the torso support bar 969 is an orbiculator 900 which is also attached to the frame 200.
- the purpose of the orbiculator 900 is to raise and lower the torso support bar 969 around a pivot point located at the hip.
- the articulating mechanism 700 has a roughly rectangular end plate 711 which is attached to the frame 200 via an attachment bracket 767.
- the end plate 711 has a slotted aperture oriented vertically for alignment with a roll pin 12 extending from the upper frame rail 201 or 202, used to locate the mechanism 700 in its proper position under the upper frame rail 201 or 202, and a single hole 13 generally located below the oval aperture and used to affix a link 789 for spacing an orbiculator 900 relative to the mechanism 700. See Figure 1.
- the upper portion of each end plate 711 is offset formed to provide a horizontal flat surface that extends under the upper frame rail 201 or 202, for attachment with screws.
- the bracket 767 also forms a pivot point for one end of the thigh support subassembly 770 and a stirrup 791.
- the other end of the stirrup is fastened to a pair of spaced apart fittings 731 , 732.
- a drive pinion 777 between these fittings 731 , 732 drives a gear segment 776.
- the upper end of the gear segment 776 is pivotally attached to a link 714 which underlies the thigh support subassembly 770.
- the link 714 has a triangular shape with pivot points at the upper and intermediate angles.
- the drive pinion 777 is driven by a motor 504 (see Figure 17 through a connection 781.
- Drag links 761 , 762 which are fastened to a pair of anchor brackets 741 , 742.
- the drag links 761 , 762 incorporate a bend so that they do not interfere with the fittings 731 , 732 when the mechanism 700 is in the flat or zero position.
- the other ends of the drag links 761 , 762 are pivotally fastened to a lever 775 which pivotally attaches to the link 714 at its intermediate angle and then slidably to the thigh support subassembly 770 via a thrust plate 709. At the upper angle of the link 714 is pivotally attached a second lever 622.
- This lever pivotally attaches to a bellcrank 621 , which is pivotally attached at its other corners to the fittings 731 , 732 and the leg support bar 661.
- the latter connection is made via a sliding plate 603.
- the plate 603 slides inside a channel in the leg support bar 661.
- Figure 7 shows a section view of the articulating mechanism in the flat or zero position
- Figure 8 shows a section view of the articulating mechanism in the thirty degree position.
- the pinion gear 777 is rotated counterclockwise the gear segment 776 is driven upwards, which tilts the leg support subassembly 770 upwards around pivot 04.
- the constraints of the drag links 761 , 762, the lever 775 and the bellcrank 714 at pivot points 11 , 08, 07, 03 and 04 force the thigh support subassembly 770 to extend.
- the thigh support subassembly 770 is actually comprised of two bars 770a, 775b which slide inside each other.
- the link 775 is actually attached to the end of one of these bars 770b and the thrust plate 709 can slide. This comprises an extending mechanism.
- FIG. 11 is a cross-sectional view of a right hand orbiculator 900 showing its gearing and motion. The idea of an imaginary or center less hinge has been around for years and that it would solve the problem of pinching of the buttocks, a common problem in all adjustable beds. However, up to now, there has been no way to provide a center-less hinge to adjustable beds.
- the orbiculator 900 solves the problem and is part of the present invention.
- a need to standardize the making of gears This need was filled using a standard known as the diametral pitch system.
- diametral pitch system In a diametral pitch system there must be a whole number of teeth on each gear and the increase in pitch diameter per tooth varies according to the pitch. This results in the formula:
- each gear will rotate on the same axis as their respective drive gear; each gear is keyed or locked to their respective drive gear; each gear is the same diameter, has the same pitch, the same number of teeth and be in mesh with each other. Having this accomplished, the two driven gears will move relative to each other.
- FIG 11 a right hand orbiculator 900 in the flat bed position with the gear case cover removed.
- the large 240 tooth internal gear 981 b and the 168 tooth external gear 981a have been segmented and connected together to form one part with the connecting portion being a ninety degree angle used to mount the torso supporting section 969 of the bed.
- the serpentine or wavy gear tooth form being applied to the large external gear 981a, the large internal gear 981 b, and the two drive gears 951 , 953.
- the two timing gears 985 being locked to the two drive 951 , 953 gears using hexagon shaped axles passing through each pair of gears.
- timing gears 985, idler gears 987, and the spur gear drive 989 are all standard involute gears. It should be noted that timing marks appearing on the driving gears 951 , 953 and the driven gears 981 a, 981 b including the involute spur gear 989. These timing marks must be observed during assembly while the orbiculator 900 is in the flat position.
- Three pairs of rollers 972 are used to support and guide the rotor 981 as it passes back and forth radically through the open ended gear case 941.
- Figure 12, 13 and 14 show the motion of a right hand orbiculator 900 in the flat or zero degree, thirty, and sixty degree positions. Figure 14 shows that the two segmented gears 981a, 981 b have become in actuality two supporting columns.
- one right hand and one left hand orbiculator 900 are mounted under their respective right hand and left hand upper frame rails 201 via the case 941.
- Each orbiculator 900 has an open ended gear case 941 and cover referred to as a stator and a generally rainbow shaped orbiculating double gear 981 referred to as a rotor.
- Figure 15 is an exploded view of a right hand orbiculator 900.
- the shaft 781 drives the orbiculator 900.
- Figure 16 is a view of a completely assembled right hand orbiculator 900.
- FIG 17 shows how power is applied to this invention 100.
- Power is applied by a dual actuator 500.
- the dual actuator 500 has two motors 504 (which may vary to match the power supply of various countries such as voltage and cycles) and two double reduction worm gears 508 mounted at opposite ends of a split gear case 512, with two torque tubes 516 passing through each end of the gear case ends 514, one coupled to two orbiculators 900 mounted under each of the upper frame rails 201 , 202 and the other coupled to the two spur gears 777 which operate the articulating modules 700.
- Figure 18 shows a schematic of the power distribution of this invention 100.
- the mattress 102 must elongate and contract as the bed 100 is moved from the flat ( Figure 4) to the fully articulated ( Figure 5) position.
- the mattress comprises a soft top layer 101 and a lower layer 103.
- the lower layer 103 is supported by the four pads 111 , 112, 113 and 114, previously described.
- the lower layer 103 has a serpentine shape which creates voids 124, 128 in a staggered arrangement from each other. These voids 124, 128 increase in size when the mattress 102 is articulated upwards and decrease in size when the mattress 102 is articulated downwards.
- Chart A is a diagram used to convert measurements of the human form to alpha-terms for use in solving construction formulas.
- Chart B is a link length chart of dimensions based on U S population sixty to eighty-four inches tall.
- the system approach to providing beds 100 to an adult population ranging in height from five feet to seven feet tall makes it necessary to use four frame sizes, and two widths for both mechanical and economic reasons.
- the smallest or - 1 upper frame and mattress is 74 inches long and used for people 5 feet to 5.5 feet tall; the medium or - 2 upper frame and mattress is 80 inches long and used for people 5.5 feet to 6 feet tall; the large or -- 3 upper frame and mattress is 86 inches long for people 6 feet to 6.5 feet tall; and the extra large or - 4 upper frame and mattress is 92 inches long for people 6.5 feet to 7 feet tall.
- the sizes listed above will become industry standards because the mattresses 102 for use with both anthropometric and quasi-anthropometric beds are not suited for conventional beds and conventional mattresses are not suited for the beds 100 of the present invention.
- the link may be defined as the shortest distance between two pivot points.
- the link may be defined as the shortest distance between two pivot points.
- the entire spine of twenty-four links may be represented by a single link.
- Joints are approximations of the center of rotation for various types of hinge joints and can be located by articulating the joint.
- An example may be locating the knee pivot point by having the subject sit on a tall hard bottomed stool, a stool tall enough to prevent the feet from contacting the floor. While in this position and the subject relaxed gently articulate the lower leg through a normal range of movement.
- leg articulates place a pointer, say the eraser end of a pencil, on the outside of the knee and locate the point in which the pencil remains stationary while the leg is moving and place a dot of vegetable color on the skin at this point, repeat the process to make sure, then use the dot as a measuring point.
- the hip pivot point can be found in a similar manner.
- the first dimension needed is the overall height measured to the nearest inch. This is used to determine the length of the bed using the dash numbers -1 through -4.
- the general rule is applied of adding a minimum of eight inches or a maximum of fourteen inches to the overall height of the intended user. For example an intended user seventy inches tall would require a -2 frame eighty inches long or 80 inches minus 70 inches equals 10 inches which falls within the eight to fourteen inch range. Or an intended user seventy-three inches tall would require a --3 frame eighty-six inches long or 86 inches minus 73 inches equals 13 inches which falls within the eight to fourteen inch range.
- the third dimension B or the distance from the hip pivot point to the knee pivot point is required.
- the B distance, or distance between the hip pivot point and the knee pivot point is an important part of the bed 100 construction, however the B dimension is not directly applied to the bed 100 but applied to a complicated mechanism, the articulating mechanism 700, and will be explained later.
- weight and body build both are important in construction, especially of the anthropometric mattress 102. Weight is listed to the closest five pounds and the body build as thin (ectomorphic), muscular (mesomorphic) or rotund (endomorphic).
- Quasi-anthropometric adjustable articulating beds 100 and mattresses 102 made for an unknown intended user, or articulee, using the series approach provides a way to mass market the quasi-anthropometric bed 100 without the intrusiveness of taking measurements.
- the first step is the overall height of the intended user. However, to cover the height range of five feet to seven feet tall inclusive in one inch increments requires twenty five different sizes and to cover two widths, results in fifty different configurations. This is not the end because height is only part of matching the bed 100 to the human form; proportions such as thigh length and distance from the top of the head to the hip pivot point also must be considered. When range, width, thigh length and the top of head to hip pivot point dimension are extended the result is 31 ,250 different configurations.
- the quasi-anthropometric beds 100 are thus identical to the anthropometric beds 100 except they are pre- manufactured to certain standard sizes thus offering immediate delivery and can be comparatively selected at point of purchase.
- a series of quasi-anthropometric beds 100 and mattresses 102 are made having proportional differences related to race or ethnography. In some countries having a large number of articulees will match a small series of quasi- anthropometric beds 100 and mattresses 102 when properly selected.
- All anthropometric types begin with three basic elements; 1 ) the over-all height of the intended user or articulee expressed in inches, to the nearest inch; 2) the measured distance the top of the head to the hip pivot point A expressed in inches to the nearest tenth inch; 3) the measured distance from the hip pivot point to the knee pivot point B expressed in inches to the nearest tenth inch.
- the over-all height dimension is applied to select the upper frame length best suited to match the articulate.
- the system uses as a base, four frame lengths which are referred to by dash numbers, - 1 is seventy four, (74 ) inches long and used for an articulee in the over-all height range of sixty (60 ) inches through sixty-six, (66) inches; the - 2 is eighty (80) inches long and used for an articulee in the over-all height range of sixty-six (66) inches through seventy-two (72) inches; the -- 3 is eighty-six (86) inches long and used for an articulee in the over-all height range of seventy-two (72) inches through seventy-eight (78 ) inches; and lastly the -4 is ninety-two (92) inches long and used for an articulee in the range of seventy- eight (78) inches through eighty-four (84) inches.
- the rule for selecting the proper upper bed frame 200 is: the bed frame 200 should be no less than eight (8) inches longer or fourteen (14) inches greater than the articulee'
- the roll pins are now located so they are 36.9 inches from the head end of the upper frame 200 and the mattress 102.
- the roll pins are not to be confused as being the hip pivot point, however they are on the same vertical plane as the hip pivot point of the articulee when properly positioned on his bed.
- the B dimension of the model affects parts used in the finalization or customizing of the articulating mechanism 700. See Figure 7.
- anthropomorphic and quasi-anthropomorphic beds 100 of the present invention have been described with reference to a particular embodiment. Other modifications and enhancements can be made without departing from the spirit and scope of the claims that follow.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2001251285A AU2001251285A1 (en) | 2000-04-12 | 2001-04-02 | System for producing anthropometric, adjustable, articulated beds |
EP01924649A EP1296580A1 (en) | 2000-04-12 | 2001-04-02 | System for producing anthropometric, adjustable, articulated beds |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US19688300P | 2000-04-12 | 2000-04-12 | |
US60/196,883 | 2000-04-12 | ||
US09/821,209 US6347420B2 (en) | 2000-04-12 | 2001-03-29 | System for producing anthropometric, adjustable, articulated beds |
US09/821,209 | 2001-03-29 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2001078555A1 true WO2001078555A1 (en) | 2001-10-25 |
WO2001078555B1 WO2001078555B1 (en) | 2002-02-07 |
Family
ID=26892351
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2001/010888 WO2001078555A1 (en) | 2000-04-12 | 2001-04-02 | System for producing anthropometric, adjustable, articulated beds |
Country Status (4)
Country | Link |
---|---|
US (2) | US6347420B2 (en) |
EP (1) | EP1296580A1 (en) |
AU (1) | AU2001251285A1 (en) |
WO (1) | WO2001078555A1 (en) |
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US10918543B2 (en) * | 2018-09-04 | 2021-02-16 | Joseph Shea | Tracked chair |
CN112220625A (en) * | 2020-10-28 | 2021-01-15 | 王燕燕 | Orthopedics nursing bed convenient to adjustment gesture |
CN112932164A (en) * | 2021-03-11 | 2021-06-11 | 上海嘉顺家具有限公司 | King bed frame and assembly process thereof |
TWI803397B (en) * | 2022-07-21 | 2023-05-21 | 施權航 | electric bed |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1973699A (en) * | 1931-08-22 | 1934-09-18 | John H Bradley | Bed |
US2202383A (en) * | 1937-12-30 | 1940-05-28 | Harry E Hymer | Hydraulically adjustable furniture |
Family Cites Families (12)
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CH623218A5 (en) | 1978-08-30 | 1981-05-29 | Gefintra General Finance And T | Bed frame |
US4903359A (en) | 1989-03-15 | 1990-02-27 | Rogers John E | Body support foam pad with adaptive shear stress control |
DE69208364T2 (en) | 1991-08-20 | 1996-09-19 | Jack Schwartz | MULTIPLE MATTRESS |
US5201780A (en) | 1991-09-06 | 1993-04-13 | Jay Medical, Ltd. | Anti-decubitus mattress pad |
US5214809A (en) | 1992-06-29 | 1993-06-01 | Paul Stuart | Articulated mattress for adjustable bed |
US5369826A (en) | 1993-05-14 | 1994-12-06 | Paramount Bed Company Limited | Bottom structure of a bed |
US5329655A (en) | 1993-05-18 | 1994-07-19 | Dean Garner | Slidable hospital sheet for turning patients |
US5537701A (en) * | 1994-03-15 | 1996-07-23 | Maxwell Products, Inc. | Adjustable articulated bed |
US5729849A (en) | 1994-12-08 | 1998-03-24 | Garakani; Mojtaba | Sectional bed apparatus |
US5790997A (en) | 1995-08-04 | 1998-08-11 | Hill-Rom Inc. | Table/chair egress device |
US5774914A (en) | 1996-01-05 | 1998-07-07 | Stryker Corporation | Maternity bed |
US5669094A (en) | 1996-02-27 | 1997-09-23 | Swanson; Larry Sven | Mattress with visco-elastic, temperature sensitive top layer |
-
2001
- 2001-03-29 US US09/821,209 patent/US6347420B2/en not_active Expired - Fee Related
- 2001-04-02 EP EP01924649A patent/EP1296580A1/en not_active Withdrawn
- 2001-04-02 WO PCT/US2001/010888 patent/WO2001078555A1/en not_active Application Discontinuation
- 2001-04-02 AU AU2001251285A patent/AU2001251285A1/en not_active Abandoned
- 2001-11-19 US US09/992,808 patent/US6516480B2/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1973699A (en) * | 1931-08-22 | 1934-09-18 | John H Bradley | Bed |
US2202383A (en) * | 1937-12-30 | 1940-05-28 | Harry E Hymer | Hydraulically adjustable furniture |
Also Published As
Publication number | Publication date |
---|---|
EP1296580A1 (en) | 2003-04-02 |
US6347420B2 (en) | 2002-02-19 |
US6516480B2 (en) | 2003-02-11 |
WO2001078555B1 (en) | 2002-02-07 |
AU2001251285A1 (en) | 2001-10-30 |
US20010032363A1 (en) | 2001-10-25 |
US20020053109A1 (en) | 2002-05-09 |
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