|Publication number||US3640566 A|
|Publication date||8 Feb 1972|
|Filing date||7 Oct 1969|
|Priority date||11 Oct 1968|
|Also published as||DE1951119A1|
|Publication number||US 3640566 A, US 3640566A, US-A-3640566, US3640566 A, US3640566A|
|Inventors||George Alwyn Hodge|
|Original Assignee||Hodge Investments Pty Ltd, Hodge Distributors Pty Ltd|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (6), Referenced by (118), Classifications (14)|
|External Links: USPTO, USPTO Assignment, Espacenet|
I United States Patent 1151 3,640,566 Hodge 1 Feb. 8, 197 2  INVALID CHAIR 2,500,742 3/1950 Taylor ..5/68 3,095,235 6/1967 Babcock et al. .....297/68 [721 Invent: ii fz 'g PM 3,414,324 12/1968 Taylor et a1 ..297/71 x [731 Assignees: Hodge Investments Pty. Ltd.; Hodg Db FOREIGN PATENTS OR APPLICATIONS tributors Pty. Ltd-. Port Lincoln, South 711,928 2/1931 France ..297/68 Australia 878,022 9/1961 Great Britain ..297/95  Filed: Oct. 7, 1969 Primary Examiner-Paul R. Gilliam 211 pp No: 864,424 Attomey-Oldham & Oldham 57 ABSTRACT  Foreign Application Priority Data 1 v An invalid chair having a seat back hinged to the back of the Oct. 11, 1968 Australia ..44,652/68 Seat and a lower frame hinged to the from of the Seat to form an extensible assembly which is pivoted to a main support  [1.8. CI. ..297/68, 5/68 frame the Seat being Spring loaded in a direction to extend the  Int. Cl. ....A47c l/02, A61g 15/00, A61g 7/06 assembly of frames so that an invalid is assisted fr h Seat 58 mm 61 Search ..297/68, 71, 83, 86, 90, 91; on to his f t the assembly also being positionable in a 5/ 81 bent position so that the chair functions as a bed.
 References Cited 6 Claims, 7 Drawuig Figures UNITED STATES PATENTS 2,053,852 9/1936 Tracy ..29 7/I)IG. 4
PATENTEUFEB a 1912 3.640.568
sum em 5 Ziy (0,64%mw y [264% PAIENIEDFEB elm 3 e40 566 sum .a-ors PAIENETEUFEB a 1912 SHEET '4 [IF 5 ym-541 [01/ xi 7,489
@ @MXAW 7 i 1AM PAIENIEDFEB 3:912
SHEET S-UF'S INVALID CHAIR This invention relates to a chair which is suitable for general use, but particularly for use by invalids who have difficulty in moving their joints and in exercising their limbs, and may include, but is not limited to a wheel chair.
It is known that arthritics have great difficulty in changing position, for example from a seated position to a standing position, and the main object of this invention is to provide a chair wherein at least some of the weight of a user is counterbalanced so that the chair will assist a user in changing from a seated to a standing position.
The invention may in one of its forms consist of a chair having a seat frame, a back frame hingedly connected to the rear end of the seat frame, a lower frame hingedly connected to the front end of the seat frame to fonn with the seat and back frames an extensible assembly, link means further interconnecting said frames, a main support frame, hinge means hingedly connecting one of the frames of said extensible assembly to the main support frame, and spring means operatively connecting one of the frames of said extensible assembly to the main frame and urging the frames of said extensible assembly towards their relatively extended positions. A chair constructed according to this invention may be operated with very little effort by the body movements of a user, and the spring means will be of assistance to a user moving from a seated to a standing position, as the frames which constitute the extensible assembly move correspondingly from a relatively retracted to a relatively extended position.
it is desirable for an arthritic or other invalid to be able to exercise legs and ankles while in a seated position, but the patients feet should be supported by a footrest. It is of course desirable that the footrest should not be moveable when the patient is in a standing position, and further desirable that the footrest position should be as low as possible so that the step height is small.
To achieve these objects the invention may although not necessarily include as one of its further features a relatively moveable pressure plate on the lower frame engaged by a pressure imparting member on a link hinged to the seat frame, the pressure imparting member however being moved out of engagement with the pressure plate as the seat frame is lowered from an extended to a retracted position.
When a patient is sitting upright in a chair it is desirable that the headrest should be in approximately the same plane as the backrest, but when the patient is lying on a support, it is desirable that the headrest should be elevated relative to the backrest, and to achieve this object this invention may include as a still further feature a headrest frame hinged to a backrest frame but arranged to be secured thereto in any one of a plurality of positions.
It will be seen that the invention may be applied either to a mobile or an immobile chair, and the mobile chair could for example be a wheelchair arranged to be operated by a patient. However, an embodiment of the invention when applied to a simple mobile chair arranged to be operated by a person other than a patient is described hereunder in some detail with reference to and is illustrated in the accompanying drawings, in which:
FIG. 1 is a diagrammatic representation of a chair with the frames of its extensible assembly arranged in a retracted position (for a patient when seated),
FIG. 2 is a corresponding diagrammatic view showing the frames of the extensible assembly arranged in an elevated extended position (for a patient when moving to or from a standing position),
FIG. 3 is a further corresponding diagrammatic view showing the frames in a horizontal extended position (for a patient in a recumbent position),
FIG. 4 is an elevation illustrating the frames and linkage mechanism of the chair,
FIG. 5 is a perspective view of the chair in its elevated extended position,
FIG. 6 is a fragmentary view of portion of the lower frame of the chair showing the pressure imparting member firstly in a position of disengagement from the pressure plate, and secondly in a position of engagement, and
FIG. 7 is a fragmentary view showing adjustment means for adjustment of the angle of the back frame relative to the seat frame.
In this embodiment a main support frame 10 supported by wheels 11 is provided with aligned main pivots 12 one on each side, the main pivots being disposed forwardly. on the main frame 10, and the seat frame portion of an extensible assembly 13 is pivoted about these pivots 12 to the main frame, and supported by the pivots.
The extensible assembly 13 comprises a seat frame 16, a back frame 17 hingedly connected to the rear end of the seat frame 16 about the pivot 18, and a lower frame 19 pivotally connected to the front end of the seat frame about the pivots 20. The back frame 17 includes a headrest 21, and the lower frame 19 includes a footrest 22. This entire assembly pivots as a whole about the main pivots 12 on the main support frame 10.
A pair of seat frame-lifting levers 26 are pivoted between their respective ends on the pivots 27 on the main frame 10, the rear. ends being provided with rollers 28 which engage the underface of the seat frame 16. The front ends are connected to the front ends of rearwardly and downwardly sloping lifting springs 29 (not shown in FIG. 3). The rear lower ends of the lifting springs 29 are anchored to an anchor bar 30 carried by the main frame 10, and having a position adjustment screw 31 on the end of a crank arm 32, to provide tension adjustment means which are used to ensure the lifting spring 29 correctly counterbalances the weight of a user.
The footrest 22 is hinged near its rear end to the lower frame 19 about pivots 38, the footrest having a rearwardly projecting arm 39 which is connected to a pressure imparting arm 40 by a link 41. The arm 40 is pivoted at its one end to the main frame 10 about the main pivot 12, and carries a pressure roller 42 at its lower end, the arm 40 further being connected to downward extensions 44 of the back frame 17 by the link 45, which cooperates with the seat frame 16 to form a parallel arm type of interconnection between the back frame 17 and the lower frame 19. As shown in FIGS. 2 and 3, this retains approximately the same relationship of the frames of the extensible assembly 13 for the upright and recumbent positions of a patient, and any required slight variation is arranged by simply deviating from the parallel conditions.
A seat back lift spring 48 connects the arm 40 to the main frame 10, and becomes extended when the arm 40 moves forwardly as shown in FIG. 3, so that a patient when in the recumbent position is assisted from that position to a sitting position by this spring. The rear face of the lower frame 19 is provided with a pressure plate 50 which is engaged by the pressure roller 42 carried on the lower end of the pressure imparting arm, the arrangement being that the pressure imparting arm prevents swinging of the footrest if the extensible assembly 13 is extended, but permits swinging of the footrest if retracted as in FIG. 1, thereby stabilizing the footrest when a patient is to move outwardly from the chair from a seated to a standing position. The linkage on the footrest is so arranged that it lays the footrest over at a comfortable angle for the feet of a patient when the chair is in any of its positions. When the upper frame is canted forward from vertical with the seat frame horizontal, the footrest is free to swing thus enabling the patient to exercise feet and legs (see FIG. 6).
The rear end of the seat frame is hinged to the upper frame as described above, and the linkage is such that the upper frame is sloping forwardly and upwardly when the extensible assembly is in its extended position but rearwardly and upwardly when it is in its reclining position. The linkage further lowers the upper frame to be substantially in the same plane as the seat frame when the chair is lowered right back for a pa tient to occupy a horizontal position.
When the upper frame is in a substantially horizontal position, the headrest hinged to the upper frame may be adjusted to a slightly raised position if this is desired.
It is desirable for a patient to be able to regulate the relative angle between the seat frame and the upper frame and to retain those two frames at that angle, and to achieve this a notched plate 54 is included on the back frame 17 (FIG. 7) and this is engaged by a latch 55 on a hand lever 56, the latch 55 simply moving into a notch to prevent relative movement and being released therefrom to allow relative movement as the frames vary in their angular relationship, the latch 55 automatically disengaging from its notch as the chair moves to its upstanding extended position (FIG. 2) by engaging a striker plate (not shown) on the frame 10. v a
To enable the extensible assembly 13 to occupy a retracted position, the main support frame is provided with support brackets 57 which support the seat frame in its retracted position, and are engaged by respective complementary latches 58 (F104) coupled to release levers 59 by links 60.
In this embodiment the seat frame is provided with an aperture (not shown) disposed centrally,'and the seat cushion 64 (FIG. 5) is a loose cushion positioned on the seat frame to cover the aperture, which is also provided with a lift-out panel (not shown). A shelf (not shown) is positioned on the main frame but beneath the seat frame when in its horizontal position, and this then enables the chair to be used as a commode. The arms may (if desired) be arranged to retain a table.
1. A chair having a seat frame, pivot means connecting the rear end of the seat frame to a back frame, further pivot means connecting the front end of the seat frame to a lower frame, link means between the back frame and the lower frame limiting relative angular relationship therebetween upon tilting of the seat frame, a footstool, pivot means connecting the footstool to the lower end of the lower frame, link means between the footstool and a said frame limiting angular movement of the footstool upon tilting of the seat frame, said footstool and frames constituting an extensible assembly which in its extended position has said frames more nearly in alignment than when in its retracted position, a main support frame, main pivots between the seat frame and the main support frame, support brackets on the main frame supporting the seat frame when said extensible assembly is in its retracted position, a seat frame lifting lever, pivot means pivotally supporting said lever on the main frame, means on the lever engaging the under surface of the seat frame, a tension spring connected at its respective ends to the lifting lever and the main frame urging the seat frame upwardly and forwardly thereby in turn urging the frames of said extensible assembly towards their relatively extended positions.
2. A chair having a seat frame, a back frame, first hinge means connecting the back frame to the rear end of the seat frame, a lower frame, further hinge means connecting the lower frame to the front end of the seat frame to form with the seat and back frames an extensible assembly, link means further interconnecting said frames, a main support frame, main pivots connecting one of the frames of said extensible assembly to the main support frame, a seat frame lifting lever, pivot means pivotally supporting said lever on the main frame,
means on the lever engaging an under surface of the seat frame, and spring means connected to the lifting lever and to the main frame to urge the seat frame upwardly and forwardly thereby in turn urging the frames of said extensible assembly towards their relatively extended positions said link 'means includes a link, first pivot means pivotally connecting the rear end of the link to a downward extension of the back frame, a second link means including a link arm pivotally connected to the seat frame and extending downwardly therefrom: further pivot means operatively and pivotally connecting the front end of the link to the link arm and including a member pivotally operatively connecting to the lower frame and to the link arm between its connections to the seat frame and to the linkthe distance between said first hinge means and said further hinge means being a little greater than the distance brackets secured to the main frame and positioned to support the seat frame when in its retracted position, and latch means on the seat frame and main frame cooperating to releasably' retain the seat frame in its retracted position.
4. A chair according to claim 1 further comprising a pressure imparting arm, hinge means at the upper end of the pressure imparting arm hingedly connecting it to the seat frame, a roller journaled to the lower end'of the pressure imparting arm, and a pressure plate extending rearwardly from the lower frame, said main pivots being between first said pivot means and said further pivot means so that the pressure plate is engaged by the pressure roller only as the frames of said extensible assembly move towards and into their extended positions.
5. A chair according to claim 4 further comprising a seat back lift spring connected at one end to said pressure imparting arm and at the other end to the rear of the main frame, said link means between the back frame and lower frame being constituted by a link, pivot means between one end of the link and said pressure imparting arm and further pivot means between the other end of the link and a downward extension of said back frame, the seat back lift spring thereby being extended by movement of the frames of said extensible assembly into their relative extended recumbent positions.
6. A chair according to claim 2 wherein the link means includes a link, first pivot means pivotally connecting the rear end of the link to a downward extension of the back frame, a second link means including a link arm pivotally connected to the seat frame and extending downwardly therefrom; further pivot means operatively and pivotally connecting the front end of the link to the link arm and including a member pivotally operatively connecting to the lower frame and to the link arm between its connections to the seat frame and to the link; the distance between said first hinge means and said further hinge means being a little greater than the distance between said first pivot means and said further pivot means so that the angular relationship between the back frame and lower frame varies by only a small amount as the extensible assembly moves from an extended to a retracted position.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US2053852 *||11 Feb 1935||8 Sep 1936||Tracy Thomas North||Mechanical chair|
|US2500742 *||30 Jul 1945||14 Mar 1950||Beem Foundation||Invalid's bed|
|US3095235 *||5 Sep 1961||25 Jun 1963||Babcock Harold S||Hydraulically operated bed chair|
|US3414324 *||27 Jul 1965||3 Dec 1968||S S White Company||Adjustable chair|
|FR711928A *||Title not available|
|GB878022A *||Title not available|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US3807795 *||20 Mar 1972||30 Apr 1974||A Schwartz||Stand-up wheelchair|
|US3851917 *||29 Mar 1973||3 Dec 1974||Bath Inst Of Medical Eng||Invalid chairs|
|US3863980 *||15 Jun 1973||4 Feb 1975||Elliot Ciner||Geriatric chair|
|US4007960 *||30 Apr 1975||15 Feb 1977||Gaffney Edward J||Reclining elevator chair|
|US4031576 *||24 May 1976||28 Jun 1977||Helen Charlotte Epstein||Invalid toilet aid|
|US4099277 *||30 Sep 1975||11 Jul 1978||Watkins Mervyn M||Stander apparatus providing varying degrees of weight bearing for patient therapy|
|US4120530 *||27 Apr 1977||17 Oct 1978||Michael Imbro||Invalid chairs|
|US4231614 *||27 Oct 1978||4 Nov 1980||Shaffer Gene P||Wheelchair|
|US4506930 *||12 Feb 1982||26 Mar 1985||Etablissements Poirier||Wheel-chair adapted to enable the patient to stand up|
|US4519649 *||28 Mar 1983||28 May 1985||Kanagawa Rehabilitation Center||Wheelchair|
|US4538853 *||22 Dec 1983||3 Sep 1985||Nat Levenberg||Chair for handicapped persons|
|US4545616 *||22 Feb 1984||8 Oct 1985||National Research Development Corporation||Mobile chair with elevating seat|
|US4569556 *||29 Dec 1983||11 Feb 1986||Societe A Responsabilite Limitee International Diffusion Consommateur I.D.C||Elevator device for wheelchair and wheelchair incorporating same|
|US4573736 *||4 Sep 1984||4 Mar 1986||Nat Levenberg||Chair for handicapped persons|
|US4637654 *||19 Feb 1985||20 Jan 1987||Boardman Paul A||Armchair with tilting seat|
|US4688851 *||7 Feb 1986||25 Aug 1987||Henry E. Allen||Seating assist device with adjustable spring assembly|
|US4838612 *||26 Jul 1988||13 Jun 1989||J. Cinnamon Limited||Occupant-arising assist chair|
|US4872223 *||26 Sep 1985||10 Oct 1989||Baird Lincoln F||Orthopedic chair|
|US4946222 *||30 Jan 1989||7 Aug 1990||Triangle Engineering Of Arkansas, Inc.||Lift platform for chairs|
|US4979726 *||15 May 1990||25 Dec 1990||Alexander Geraci||Chair having lift apparatus|
|US5108202 *||12 Jan 1990||28 Apr 1992||Smith Kenneth B||Wheel chairs|
|US5127705 *||14 Dec 1988||7 Jul 1992||Societe Salons Direct Usine||Multifunction and multiposition chair|
|US5165753 *||17 May 1991||24 Nov 1992||Henderson Eldred D||Elevator chair apparatus|
|US5626389 *||10 Aug 1993||6 May 1997||Dynamic Seating Llc||Lift seat|
|US6212714||22 Jul 1998||10 Apr 2001||Hill-Rom, Inc.||Hospital bed and mattress having a retracting foot section|
|US6328380||17 Feb 1998||11 Dec 2001||Mercado Medic Ag||Chair adjustment device|
|US6427264||17 Mar 2000||6 Aug 2002||Hill-Rom Services, Inc.||Gap filler for bed|
|US6496993||5 Jan 2001||24 Dec 2002||Hill-Rom Services, Inc.||Hospital bed and mattress having a retracting foot section|
|US6611979||29 Dec 2000||2 Sep 2003||Hill-Rom Services, Inc.||Mattress having a retractable foot section|
|US6684427||20 Dec 2002||3 Feb 2004||Hill-Rom Services, Inc.||Hospital bed and matress having a retractable foot section|
|US6704954||3 Jul 2002||16 Mar 2004||Hill-Rom Services, Inc.||Gap filler for bed|
|US6820293||26 Sep 2002||23 Nov 2004||Hill-Rom Services, Inc.||Bed siderail pad apparatus|
|US6862762 *||10 Jan 2003||8 Mar 2005||Wlf, L.L.C.||Patient support apparatus|
|US6880189||26 Aug 2003||19 Apr 2005||Hill-Rom Services, Inc.||Patient support|
|US6928673||25 Jul 2003||16 Aug 2005||Hill-Rom Services, Inc.||Siderail pad for hospital bed|
|US6976698||24 Apr 2003||20 Dec 2005||Rehabilitation Institute Of Chicago||Manually operable standing wheelchair|
|US7000272||3 Feb 2004||21 Feb 2006||Hill-Rom Services, Inc.||Hospital bed and mattress having a retractable foot section|
|US7073220||26 Mar 2004||11 Jul 2006||Hill-Rom Services, Inc.||Bed siderail having a latch|
|US7100222||2 Jul 2004||5 Sep 2006||Hill-Rom Services, Inc.||Apparatus and method for mounting hospital bed accessories|
|US7107636||16 Mar 2004||19 Sep 2006||Hill-Rom Services, Inc.||Gap filler for bed|
|US7165778||7 Nov 2005||23 Jan 2007||Rehabilitation Institute Of Chicago||Manually operable standing wheelchair|
|US7216384||22 Dec 2005||15 May 2007||Hill-Rom Services, Inc.||Hospital bed and mattress having a retractable foot section|
|US7222377||31 Mar 2005||29 May 2007||Hill-Rom Services, Inc.||Apparatus and method for closing hospital bed gaps|
|US7234776||18 Jun 2004||26 Jun 2007||Lifestand International Sa||Body support chair with automatic modification of the back inclination|
|US7293305||28 Aug 2006||13 Nov 2007||Hill-Rom Services, Inc.||Apparatus and method for mounting hospital bed accessories|
|US7296312||8 Sep 2003||20 Nov 2007||Hill-Rom Services, Inc.||Hospital bed|
|US7398989 *||23 May 2005||15 Jul 2008||Lifestand International Sa||Stand-up wheelchair with gearing down of the stand-up operation|
|US7406731||30 Mar 2006||5 Aug 2008||Holl-Rom Services, Inc.||Hospital bed|
|US7455362||13 Jul 2006||25 Nov 2008||Kids Up, Inc.||Adjustable motion wheel chair|
|US7506390||28 Sep 2007||24 Mar 2009||Hill-Rom Services, Inc.||Patient support apparatus having controller area network|
|US7520006||30 Mar 2006||21 Apr 2009||Hill-Rom Services, Inc.||Hospital bed including moveable foot portion|
|US7523515||13 Apr 2007||28 Apr 2009||Hill-Rom Services, Inc.||Hospital bed and mattress having a retractable foot section|
|US7540565 *||8 Sep 2006||2 Jun 2009||Lipford William D||Lift chair|
|US7591034||12 Apr 2007||22 Sep 2009||Hill-Rom Services, Inc.||Apparatus and method for closing hospital bed gaps|
|US7600817||16 Aug 2005||13 Oct 2009||Hill-Rom Services, Inc.||Chair|
|US7669263||30 Mar 2006||2 Mar 2010||Hill-Rom Services, Inc.||Mattress assembly including adjustable length foot|
|US7703158||28 Sep 2007||27 Apr 2010||Hill-Rom Services, Inc.||Patient support apparatus having a diagnostic system|
|US7788747||21 Sep 2009||7 Sep 2010||Hill-Rom Services, Inc.||Apparatus and method for closing hospital bed gaps|
|US7891695 *||15 Sep 2008||22 Feb 2011||Otto Bock Healthcare Gmbh||Upright wheelchair|
|US7930778||7 Dec 2007||26 Apr 2011||Hill-Rom Services, Inc.||Pinch-preventing unit for bed guardrail|
|US7934276||7 Feb 2007||3 May 2011||Hill-Rom Services, Inc.||End panel for a patient-support apparatus|
|US8104122||18 Dec 2006||31 Jan 2012||Hill-Rom Services, Inc.||Patient support having an extendable foot section|
|US8157326 *||11 May 2007||17 Apr 2012||Tech-Nicon International Management Services Limited||Seat|
|US8239986||13 Mar 2009||14 Aug 2012||Hill-Rom Services, Inc.||Siderail assembly for a patient-support apparatus|
|US8286282||11 Nov 2011||16 Oct 2012||Hill-Rom Services, Inc.||Bed frame and mattress synchronous control|
|US8328283||7 Oct 2009||11 Dec 2012||Hill-Rom Services, Inc.||Chair|
|US8341778||23 Jan 2012||1 Jan 2013||Hill-Rom Services, Inc.||Bed gap filler and footboard pad|
|US8360518 *||27 Sep 2010||29 Jan 2013||David Braaten||Wheelchair lift assist mechanism|
|US8414074||1 Nov 2011||9 Apr 2013||Hill-Rom Services, Inc.||Chair|
|US8419124||14 Mar 2011||16 Apr 2013||Hill-Rom Services, Inc.||Chair with movable arms and tables sections|
|US8522379 *||15 Nov 2010||3 Sep 2013||Hill-Rom Services, Inc.||Hospital bed foot section with caster cutouts|
|US8662595||7 Dec 2012||4 Mar 2014||Hill-Rom Services, Inc||Chair having powered leg extension|
|US9009893||15 Mar 2012||21 Apr 2015||Hill-Rom Services, Inc.||Hospital bed|
|US9089459||13 Nov 2014||28 Jul 2015||Völker GmbH||Person support apparatus|
|US9149403 *||24 Sep 2010||6 Oct 2015||Hill-Rom Services, Inc.||Bed frame, mattress and bed with enhanced chair egress capability|
|US9161627 *||26 Feb 2010||20 Oct 2015||Donati S.P.A.||Device for synchronizing the seat and backrest of a chair|
|US9549862||14 Jul 2013||24 Jan 2017||Milbat—Giving Quality to Life||Wheelchair foot support|
|US9713559||14 Mar 2014||25 Jul 2017||Stryker Corporation||Medical support apparatus|
|US20040034936 *||26 Aug 2003||26 Feb 2004||Hill-Rom Services, Inc.||Patient support|
|US20040212177 *||24 Apr 2003||28 Oct 2004||Rehabilitation Institute Of Chicago||Manually operable standing wheelchair|
|US20040221391 *||3 Feb 2004||11 Nov 2004||Allen E. David||Hospital bed and matress having a retractable foot section|
|US20050040688 *||18 Jun 2004||24 Feb 2005||Laffin Francois Xavier||Body support chair with automatic modification of the back inclination|
|US20050050635 *||2 Jul 2004||10 Mar 2005||Metz Darrell L.||Apparatus and method for mounting hospital bed accessories|
|US20050071921 *||25 Jul 2003||7 Apr 2005||Hill-Rom Services, Inc.||Siderail pad for hospital bed|
|US20050087957 *||23 Oct 2003||28 Apr 2005||Bennett John E.||Riser seat and wheelchairs with same|
|US20050166322 *||31 Mar 2005||4 Aug 2005||Kramer Kenneth L.||Apparatus and method for closing hospital bed gaps|
|US20050172405 *||8 Sep 2003||11 Aug 2005||Menkedick Douglas J.||Hospital bed|
|US20060012147 *||23 May 2005||19 Jan 2006||Laffin Francois X||Stand-up wheelchair with gearing down of the stand-up operation|
|US20060061067 *||7 Nov 2005||23 Mar 2006||Rehabilitation Institute Of Chicago||Manually operable standing wheelchair|
|US20060087158 *||16 Aug 2005||27 Apr 2006||Kramer Kenneth L||Chair|
|US20060096030 *||22 Dec 2005||11 May 2006||Allen E D||Hospital bed and mattress having a retractable foot section|
|US20060260051 *||17 May 2005||23 Nov 2006||Ohad Paz||Patient support apparatus|
|US20060288480 *||28 Aug 2006||28 Dec 2006||Metz Darrell L||Apparatus and method for mounting hospital bed accessories|
|US20070029857 *||13 Jul 2006||8 Feb 2007||Hanson Wayne H||Adjustable motion wheel chair|
|US20070057554 *||8 Sep 2006||15 Mar 2007||Lipford William D||Lift chair|
|US20070095618 *||12 Jul 2006||3 May 2007||Chin-Lung Lai||Structure to operate and to dismantle/assemble dual-use sickbed and wheel chair|
|US20070136949 *||18 Dec 2006||21 Jun 2007||Sandy Richards||Patient support having an extendable foot section|
|US20070169271 *||13 Apr 2007||26 Jul 2007||Allen E D||Hospital bed and mattress having a retractable foot section|
|US20070180617 *||12 Apr 2007||9 Aug 2007||Kramer Kenneth L||Apparatus and method for closing hospital bed gaps|
|US20080010748 *||28 Sep 2007||17 Jan 2008||Menkedick Douglas J||Patient support apparatus having controller area network|
|US20090072513 *||15 Sep 2008||19 Mar 2009||Heinrich Perk||Upright wheelchair|
|US20090229051 *||13 Mar 2009||17 Sep 2009||Hill-Rom Services, Inc.||Siderail assembly for a patient-support apparatus|
|US20090242700 *||11 May 2007||1 Oct 2009||Patrick Raymond||Seat|
|US20100022926 *||7 Oct 2009||28 Jan 2010||Kramer Kenneth L||Chair|
|US20110163575 *||14 Mar 2011||7 Jul 2011||Kramer Kenneth L||Chair with movable arms and tables sections|
|US20110248530 *||6 Apr 2011||13 Oct 2011||Ferdinand Lusch Gmbh & Co. Kg||Seating Furniture with a Seat Which can be Pivoted into a Standing Up Assistance Position|
|US20110289680 *||17 May 2011||1 Dec 2011||Ferdinand Lusch Gmbh & Co. Kg||Furniture for Adjustment into a Standing Up Assistance Position|
|US20120073053 *||24 Sep 2010||29 Mar 2012||Turner Jonathan D||Bed Frame, Mattress and Bed with Enhanced Chair Egress Capability|
|US20120074668 *||27 Sep 2010||29 Mar 2012||David Braaten||Wheelchair lift assist mechanism|
|US20120117731 *||15 Nov 2010||17 May 2012||Turner Jonathan D||Hospital bed foot section with caster cutouts|
|US20120313414 *||26 Feb 2010||13 Dec 2012||Donati S.P.A.||Device for synchronizing the seat and backrest of a chair|
|USRE43155 *||6 Aug 2009||7 Feb 2012||Hill-Rom Services, Inc.||Hospital bed and mattress having a retractable foot section|
|USRE43532||3 Jun 2009||24 Jul 2012||Hill-Rom Services, Inc.||Hospital bed|
|CN1788651B||17 Dec 2004||16 Jun 2010||莱福斯坦德国际公司||Body-supporting chair with automatically adjusting backrest slope|
|CN100562302C||24 May 2005||25 Nov 2009||莱福斯坦德国际公司||Lifting chair with demultiplication of the lifting operation|
|CN101443236B||11 May 2007||18 Jul 2012||泰科尼康国际管理服务有限公司||Improved seat|
|CN101467928B||18 Sep 2008||21 Mar 2012||奥托ˇ博克保健有限公司||Stand-up wheelchair|
|WO1998035587A1 *||17 Feb 1998||20 Aug 1998||Mercado Medic Ab||Chair adjustment device|
|U.S. Classification||297/68, 5/81.10R, 297/DIG.100, 5/610, 5/618|
|International Classification||A61G5/14, A61G5/00, A61G5/12|
|Cooperative Classification||Y10S297/10, A61G5/006, A61G5/14, A61G2005/128|
|European Classification||A61G5/00C, A61G5/14|