EP0495193B1 - Wheelchair - Google Patents

Wheelchair Download PDF

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Publication number
EP0495193B1
EP0495193B1 EP91120881A EP91120881A EP0495193B1 EP 0495193 B1 EP0495193 B1 EP 0495193B1 EP 91120881 A EP91120881 A EP 91120881A EP 91120881 A EP91120881 A EP 91120881A EP 0495193 B1 EP0495193 B1 EP 0495193B1
Authority
EP
European Patent Office
Prior art keywords
parts
wheelchair
guides
support
use position
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.)
Expired - Lifetime
Application number
EP91120881A
Other languages
German (de)
French (fr)
Other versions
EP0495193A1 (en
Inventor
Rolf-Dieter Dr. Weege
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Meyra Wilhelm Meyer GmbH and Co KG
Original Assignee
Meyra Wilhelm Meyer GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Meyra Wilhelm Meyer GmbH and Co KG filed Critical Meyra Wilhelm Meyer GmbH and Co KG
Publication of EP0495193A1 publication Critical patent/EP0495193A1/en
Application granted granted Critical
Publication of EP0495193B1 publication Critical patent/EP0495193B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/08—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable
    • 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
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/08—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable
    • A61G5/0808—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable characterised by a particular folding direction
    • A61G5/0816—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable characterised by a particular folding direction folding side to side, e.g. reducing or expanding the overall width of the wheelchair
    • A61G5/0825—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs foldable characterised by a particular folding direction folding side to side, e.g. reducing or expanding the overall width of the wheelchair comprising a scissor-type frame, e.g. having pivoting cross bars for enabling folding
    • 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
    • A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
    • A61G5/10—Parts, details or accessories
    • A61G5/1054—Large wheels, e.g. higher than the seat portion

Definitions

  • the innovation relates to a wheelchair of the type mentioned in the preamble of claim 1.
  • a wheelchair of the type in question is known from the company publication "MEYRA wheelchairs and rehabilitation aids" from MEYRA Wilhelm Meyer GmbH & Co. KG, Meyra-Ring, D-4925 Kalletal-Kalldorf. If such a wheelchair is to be folded from the use position into the non-use position, the side parts are generally pressed together by means of handles attached to them at the top rear, which are normally used to move the wheelchair. This often causes difficulties because of the frictional forces in the telescopic guides, which are particularly aggravated by jamming and tilting. Folding is therefore often only possible by pulling up the upper parts of the side parts, which requires special handling or a change of grip.
  • a wheelchair which is constructed similarly to the wheelchair described above, but only has telescopic guides in the front area, while in the rear area upper seat tubes, between which the seat belt runs, are guided by forks, the vertical Partially grasp the guide tubes and prevent the seat tubes from rotating around the front telescopic tubes connected to them.
  • the frictional forces in the telescopic guides that occur when the wheelchair is folded are not avoided. The wheelchair is therefore difficult to fold up.
  • the innovation is based on the task of creating a wheelchair of the type in question, in which the folding of the side parts from the use position into the non-use position is facilitated.
  • the basic idea of this teaching is to reduce the frictional forces in the telescopic guides, in particular, in that the top parts are each supported by a contact roller on contact tubes which are located on the bottom parts and extend parallel to the guides in the movement range of the top parts.
  • these roles absorb a substantial part of the compressive forces and transmit them in a rolling manner and thus with vanishing frictional forces.
  • the frictional forces in the guides are therefore significantly reduced, so that folding is facilitated overall.
  • the contact pipes are expediently extended upwards and curved backwards, where they form or have handles.
  • the investment pipes therefore do not represent any additional effort, and the effort for the investment rollers is very low. You can be conveniently located at the end of a short tube that extends in extension of the associated rotatably held tube part.
  • the wheelchair shown schematically in FIGS. 1 and 2 has two side parts 1 and 2, each consisting of a lower part 3 or 4 and an upper part 5 or 6 exist, which, as can be seen in particular from FIG. 2, are movably connected to one another in the vertical direction by telescopic guides.
  • the telescopic guides consist of tubes 7 to 10, which are held vertically displaceably in tubes 11 to 14 of the lower parts 3 and 4.
  • the upper ends of the tubes 7 and 8 or 9 and 10 are welded to bushings 15 and 16 or 17 and 18, the axis of which extends transversely to the guide direction of the tubes 7 to 10 and in which the ends of tube parts 19 and 20 engage rotatably.
  • wheels 31 to 34 which are designed and arranged in a known manner, which need not be explained in more detail.
  • the rear, vertical tubes of the lower parts 3 and 4 form in their upper region bearing tubes 35 and 36, on the inside of which there are contact rollers 37 and 38, which are located at the outer ends of the bushings 16 and 18.
  • the contact tubes 35 and 36 continue upwards over the guide area and are curved or angled backwards so that they form handles 39 and 40.
  • a seat 41 in the form of a flexible belt which wraps around the tube parts 19 and 20 with its edges.
  • the rough chair is in its position of use, in which the side parts 1 and 2 have their maximum distance from one another, essentially determined by the seat 41, in which the Bars 27 and 28 have their maximum spread.
  • the handles 39 and 40 are moved towards one another, the abutment rollers 37 and 38 rolling on the inside on the abutment tubes 35 and 36 and thus all essential, caused by the folding Forces are transmitted largely smoothly with the result that the wheelchair can be folded from the use position into the non-use position without great effort.
  • the side parts 1 and 2 and their respective lower parts 3 and 4 and upper parts 5 and 6 do not necessarily have to consist of bent or welded steel tubes. It can also be flat, plate-shaped side parts, and the guides for the two respectively associated lower and upper parts can also be designed differently in each person skilled in the art.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Handcart (AREA)
  • Carriages For Children, Sleds, And Other Hand-Operated Vehicles (AREA)
  • Motorcycle And Bicycle Frame (AREA)
  • Chairs For Special Purposes, Such As Reclining Chairs (AREA)

Description

Die Neuerung betrifft einen Rollstuhl der im Oberbegriff des Anspruchs 1 genannten Art.The innovation relates to a wheelchair of the type mentioned in the preamble of claim 1.

Durch die Firmendruckschrift "MEYRA Rollstühle und Rehabilitationsmittel" der Firma MEYRA Wilhelm Meyer GmbH & Co. KG, Meyra-Ring, D-4925 Kalletal-Kalldorf, ist ein Rollstuhl der betreffenden Art bekannt. Soll ein derartiger Rollstuhl aus der Gebrauchsstellung in die Nichtgebrauchsstellung zusammengefaltet werden, so werden die Seitenteile in der Regel mittels an ihnen oben hinten angebrachter Handgriffe, die normalerweise zum Bewegen des Rollstuhles dienen, zusammengedrückt. Dies bereitet häufig wegen der Reibkräfte in den teleskopartigen Führungen, die insbesondere durch Verklemmen und Verkanten noch verstärkt werden, Schwierigkeiten. Ein Zusammenfalten ist daher häufig nur durch Hochziehen der Oberteile der Seitenteile möglich, was eine besondere Handhabung bzw. ein Umgreifen erforderlich macht.A wheelchair of the type in question is known from the company publication "MEYRA wheelchairs and rehabilitation aids" from MEYRA Wilhelm Meyer GmbH & Co. KG, Meyra-Ring, D-4925 Kalletal-Kalldorf. If such a wheelchair is to be folded from the use position into the non-use position, the side parts are generally pressed together by means of handles attached to them at the top rear, which are normally used to move the wheelchair. This often causes difficulties because of the frictional forces in the telescopic guides, which are particularly aggravated by jamming and tilting. Folding is therefore often only possible by pulling up the upper parts of the side parts, which requires special handling or a change of grip.

Durch FR-A-2236343 ist ein Rollstuhl bekannt, der ähnlich dem zuvor beschriebenen Rollstuhl aufgebaut ist, jedoch nur im vorderen Bereich Teleskopführungen aufweist, während im hinteren Bereich obere Sitzrohre, zwischen denen der Sitzgurt verläuft, durch Gabeln geführt sind, die vertikale Führungsrohre teilweise umgreifen und so verhindern, daß sich die Sitzrohre jeweils um die damit verbundenen vorderen Teleskoprohre drehen können. Die beim Zusammenfalten des Rollstuhls auftretenden Reibkräfte in den Teleskopführungen werden nicht vermieden. Der Rollstuhl läßt sich daher schwer zusammenfalten.From FR-A-2236343 a wheelchair is known which is constructed similarly to the wheelchair described above, but only has telescopic guides in the front area, while in the rear area upper seat tubes, between which the seat belt runs, are guided by forks, the vertical Partially grasp the guide tubes and prevent the seat tubes from rotating around the front telescopic tubes connected to them. The frictional forces in the telescopic guides that occur when the wheelchair is folded are not avoided. The wheelchair is therefore difficult to fold up.

Der Neuerung liegt die Aufgabe zugrunde, einen Rollstuhl der betreffenden Art zu schaffen, bei dem das Zusammenfalten der Seitenteile aus der Gebrauchsstellung in die Nichtgebrauchsstellung erleichtert ist.The innovation is based on the task of creating a wheelchair of the type in question, in which the folding of the side parts from the use position into the non-use position is facilitated.

Die der Neuerung zugrundeliegende Aufgabe wird durch die im Kennzeichen des Anspruchs 1 angegebene Lehre gelöst.The task underlying the innovation is achieved by the teaching specified in the characterizing part of claim 1 solved.

Der Grundgedanke dieser Lehre besteht darin, die Reibkräfte in den insbesondere teleskopartigen Führungen dadurch zu verringern, daß die Oberteile jeweils durch eine Anlagerolle an Anlagerohren abgestützt sind, die sich an den Unterteilen befinden und sich parallel zu den Führungen im Bewegungsbereich der Oberteile erstrecken. Diese Rollen nehmen beim Zusammenfalten einen wesentlichen Teil der Zusammendrückkräfte auf und übertragen diese rollend und somit mit verschwindenden Reibkräften. Die Reibkräfte in den Führungen werden daher wesentlich verringert, so daß insgesamt das Zusammenfalten erleichtert wird.The basic idea of this teaching is to reduce the frictional forces in the telescopic guides, in particular, in that the top parts are each supported by a contact roller on contact tubes which are located on the bottom parts and extend parallel to the guides in the movement range of the top parts. When folded, these roles absorb a substantial part of the compressive forces and transmit them in a rolling manner and thus with vanishing frictional forces. The frictional forces in the guides are therefore significantly reduced, so that folding is facilitated overall.

Die Anlagerohre sind zweckmäßigerweise nach oben verlängert und nach hinten gekrümmt, wo sie Handgriffe bilden oder aufweisen. Die Anlagerohre stellen somit keinen Mehraufwand dar, und der Aufwand für die Anlagerollen ist sehr gering. Sie können sich in zweckmäßiger Weise jeweils am Ende eines kurzen Rohres befinden, das sich in Verlängerung des zugehörigen, drehbar gehaltenen Rohrteiles erstreckt.The contact pipes are expediently extended upwards and curved backwards, where they form or have handles. The investment pipes therefore do not represent any additional effort, and the effort for the investment rollers is very low. You can be conveniently located at the end of a short tube that extends in extension of the associated rotatably held tube part.

Anhand der Zeichnung soll die Erfindung an einem Ausführungsbeispiel näher erläutert werden.

Fig. 1
zeigt schematisch und perspektivisch ein Ausführungsbeispiel eines Rollstuhls gemäß der Neuerung in Gebrauchsstellung,
Fig. 2
zeigt den Rollstuhl gemäß Fig. 1 in Nichtgebrauchsstellung,
Fig. 3
zeigt einen vergrößerten Ausschnitt aus Fig. 1 im Bereich der Anlagerolle, und
Fig. 4
zeigt einen vergrößerten Ausschnitt ähnlich Fig. 3 aus Fig. 2 im Bereich der Anlagerolle.
The invention will be explained in more detail using an exemplary embodiment with reference to the drawing.
Fig. 1
shows schematically and in perspective an embodiment of a wheelchair according to the innovation in the use position,
Fig. 2
shows the wheelchair according to FIG. 1 in the non-use position,
Fig. 3
shows an enlarged section of Fig. 1 in the area of the contact roller, and
Fig. 4
shows an enlarged detail similar to FIG. 3 from FIG. 2 in the area of the contact roller.

Der in den Fig. 1 und 2 schematisch dargestellte Rollstuhl weist zwei Seitenteile 1 und 2 auf, die jeweils aus einem Unterteil 3 bzw. 4 sowie einem Oberteil 5 bzw. 6 bestehen, die, wie das insbesondere aus Fig. 2 ersichtlich ist, durch teleskopartige Führungen in vertikaler Richtung beweglich miteinander verbunden sind. Die Teleskopführungen bestehen aus Rohren 7 bis 10, die in Rohren 11 bis 14 der Unterteile 3 und 4 vertikal verschieblich gehalten sind.The wheelchair shown schematically in FIGS. 1 and 2 has two side parts 1 and 2, each consisting of a lower part 3 or 4 and an upper part 5 or 6 exist, which, as can be seen in particular from FIG. 2, are movably connected to one another in the vertical direction by telescopic guides. The telescopic guides consist of tubes 7 to 10, which are held vertically displaceably in tubes 11 to 14 of the lower parts 3 and 4.

Die oberen Enden der Rohre 7 und 8 bzw. 9 und 10 sind mit Buchsen 15 und 16 bzw. 17 und 18 verschweißt, deren Achse quer zur Führungsrichtung der Rohre 7 bis 10 verläuft und in die die Enden von Rohrteilen 19 und 20 drehbar eingreifen.The upper ends of the tubes 7 and 8 or 9 and 10 are welded to bushings 15 and 16 or 17 and 18, the axis of which extends transversely to the guide direction of the tubes 7 to 10 and in which the ends of tube parts 19 and 20 engage rotatably.

In gleicher Weise wie die Rohrteile 19 und 20 an den Oberteilen 5 und 6 befinden sich an den Unterteilen 3 und 4 Rohrteile 21 und 22, die in aus kurzen Rohrstücken bestehenden Buchsen 23 und 24 bzw. 25 und 26 drehbar gehalten sind. Zwei Stangen 27 und 28 sind über ein mittleres Drehlager 29 scherenförmig miteinander verbunden und mit ihren Enden jeweils starr mit den Rohrteilen 19 bzw. 20 sowie 21 bzw. 22 verschweißt.In the same way as the pipe parts 19 and 20 on the upper parts 5 and 6 are on the lower parts 3 and 4 pipe parts 21 and 22 which are rotatably held in bushings 23 and 24 or 25 and 26 consisting of short pipe sections. Two rods 27 and 28 are connected to each other in a scissor-like manner via a central pivot bearing 29 and their ends are rigidly welded to the tubular parts 19 and 20 and 21 and 22, respectively.

An den Unterteilen 3 und 4 befinden sich Räder 31 bis 34, die in bekannter Weise ausgebildet und angeordnet sind, was nicht näher erläutert zu werden braucht.On the lower parts 3 and 4 there are wheels 31 to 34 which are designed and arranged in a known manner, which need not be explained in more detail.

Die hinteren, vertikalen Rohre der Unterteile 3 und 4 bilden in ihrem oberen Bereich Anlagerohre 35 und 36, an deren Innenseite Anlagerollen 37 und 38 anliegen, die sich an den äußeren Enden der Buchsen 16 und 18 befinden. Die Anlagerohre 35 und 36 setzen sich über den Führungsbereich nach oben hin fort und sind nach hinten abgekrümmt bzw. abgewinkelt, so daß sie Handgriffe 39 und 40 bilden. Zwischen den Rohrteilen 19 und 20 befindet sich ein Sitz 41 in Form eines flexiblen Gurtes, der mit seinen Rändern die Rohrteile 19 bzw. 20 umschlingt.The rear, vertical tubes of the lower parts 3 and 4 form in their upper region bearing tubes 35 and 36, on the inside of which there are contact rollers 37 and 38, which are located at the outer ends of the bushings 16 and 18. The contact tubes 35 and 36 continue upwards over the guide area and are curved or angled backwards so that they form handles 39 and 40. Between the tube parts 19 and 20 there is a seat 41 in the form of a flexible belt which wraps around the tube parts 19 and 20 with its edges.

In der Darstellung gemäß Fig. 1 und 3 befindet sich der Rohlstuhl in seiner Gebrauchslage, in der die Seitenteile 1 und 2 ihre im wesentlichen durch den Sitz 41 bestimmte maximale Entfernung voneinander haben, in der die Stangen 27 und 28 ihre maximale Spreizung haben. Um den Rollstuhl in die in Fig. 2 bzw. 4 dargestellte Nichtgebrauchslage zu bringen, werden die Griffe 39 und 40 aufeinander zu bewegt, wobei die Anlagerollen 37 und 38 innen auf den Anlagerohren 35 und 36 abrollen und damit alle wesentlichen, durch das Zusammenfalten bedingten Kräfte weitgehend reibungslos übertragen mit dem Ergebnis, daß sich der Rollstuhl ohne großen Kraftaufwand aus der Gebrauchslage in die Nichtgebrauchslage zusammenfalten läßt.1 and 3, the rough chair is in its position of use, in which the side parts 1 and 2 have their maximum distance from one another, essentially determined by the seat 41, in which the Bars 27 and 28 have their maximum spread. In order to bring the wheelchair into the non-use position shown in FIGS. 2 and 4, the handles 39 and 40 are moved towards one another, the abutment rollers 37 and 38 rolling on the inside on the abutment tubes 35 and 36 and thus all essential, caused by the folding Forces are transmitted largely smoothly with the result that the wheelchair can be folded from the use position into the non-use position without great effort.

Die Seitenteile 1 und 2 und deren jeweilige Unterteile 3 und 4 sowie Oberteile 5 und 6 brauchen nicht notwendigerweise aus gebogenen bzw. miteinander verschweißten Stahlrohren zu bestehen. Es kann sich auch um flächige, plattenförmige Seitenteile handeln, und die Führungen für die beiden jeweils einander zugeordneten Unter- bzw. Oberteile können auch in jedem Fachmann geläufiger Weise anders ausgebildet sein.The side parts 1 and 2 and their respective lower parts 3 and 4 and upper parts 5 and 6 do not necessarily have to consist of bent or welded steel tubes. It can also be flat, plate-shaped side parts, and the guides for the two respectively associated lower and upper parts can also be designed differently in each person skilled in the art.

Claims (2)

  1. A wheelchair comprising two side units (1, 2), which are interconnected by a shear mechanism (27, 28, 29) and may be folded together from a use position, in which they are spaced from each other, to a non-use position, in which they are positioned close to each other, wherein the side units (1, 2) comprise, respectively, lower parts (3, 4) provided with wheels (31-34), and upper parts (5, 6) interconnected by a foldable seat (41), the lower and upper parts being connected to each other vertically displaceably by front (7, 11; 9, 13) and rear (8, 12; 10, 14) guides which are made preferably as telescopic guides (7, 11; 9, 13; 8,12; 10, 14), and having always in the plane of the side walls (1, 2) transversely to the direction of the guides (7, 11; 9, 13; 8, 12; 10, 14) rotatably mounted tube sections (19, 20), which are rigidly connected to the ends of rods (27, 28) interconnected in their middle region by a pivot (29) and forming thereby the shear mechanism, characterised in that the lower parts (3, 4) of the side units (1, 2) comprise, respectively, a support tube (35, 36) which extends parallel to the adjacent rear guide, at least in the guide region, and that the upper parts (5, 6) of the side units (1, 2) comprise each a support ring (37, 38) which is supported against the folding direction on the inner side of the support tube (35, 36) adjacent the support ring (37, 38).
  2. A wheel chair according to claim 1, characterised in that above the region of movement of the support rings (37, 38) the support tubes (35, 36) are curved backwards and have extensions forming or comprising handles (39, 40).
EP91120881A 1991-01-18 1991-12-05 Wheelchair Expired - Lifetime EP0495193B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9100562U DE9100562U1 (en) 1991-01-18 1991-01-18 wheelchair
DE9100562U 1991-01-18

Publications (2)

Publication Number Publication Date
EP0495193A1 EP0495193A1 (en) 1992-07-22
EP0495193B1 true EP0495193B1 (en) 1994-10-19

Family

ID=6863455

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91120881A Expired - Lifetime EP0495193B1 (en) 1991-01-18 1991-12-05 Wheelchair

Country Status (9)

Country Link
US (1) US5253886A (en)
EP (1) EP0495193B1 (en)
CA (1) CA2059483A1 (en)
CZ (1) CZ281814B6 (en)
DE (2) DE9100562U1 (en)
HU (1) HU213422B (en)
NO (1) NO301212B1 (en)
RU (1) RU2060725C1 (en)
SK (1) SK278856B6 (en)

Families Citing this family (12)

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Publication number Priority date Publication date Assignee Title
US6164674A (en) * 1995-06-05 2000-12-26 Adorno/Rogers Technology, Inc. Adjustable wheelbase wheelchair
US6499762B1 (en) 1995-06-05 2002-12-31 Adorno/Rogers Technology, Inc. Frame support apparatus and coupling device for use with an ambulatory system and method of fabrication thereof
US6257609B1 (en) * 1998-03-27 2001-07-10 O'neill, Sr. Theodore C. Tilt-in-space wheelchair
US6135475A (en) * 1998-10-16 2000-10-24 Brown; Richard Portable wheelchair
US7384058B2 (en) * 2005-01-05 2008-06-10 Ki Mobility Llc Foldable wheelchair with extensible link assembly and method
WO2007014042A2 (en) * 2005-07-22 2007-02-01 Carlsbad International Export, Inc. Bi-folding wheelchair
US20070145723A1 (en) * 2005-11-29 2007-06-28 Kamara Jemimah G Vertically adjustable folding wheelchair
FR2931432B1 (en) * 2008-05-22 2011-01-07 Dorel France Sa FOLDING STROLLER WITH ASSISTED FOLDING BY ROLLING ELEMENTS
DE602008006055D1 (en) 2008-07-03 2011-05-19 Invacare Int Sarl Collapsible wheelchair
US8998245B1 (en) 2014-08-13 2015-04-07 Sunrise Medical (Us) Llc Folding wheelchair
US9655794B2 (en) * 2015-10-07 2017-05-23 Edward T. Bednarz, III Adjustable wheelchair
CN106214371A (en) * 2016-08-15 2016-12-14 江阴市新盛医疗器材设备有限公司 A kind of convenience type wheelchair

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US2959212A (en) * 1958-07-14 1960-11-08 Gendron Wheel Company Seat tube guide for folding wheel chairs
AT287185B (en) * 1968-10-16 1971-01-11 Meyer Fa Wilhelm Foldable hospital elevator
FR2236343A5 (en) * 1973-07-06 1975-01-31 Metabio Wheelchair with side frames on collapsible linkage - upper halves of side frames telescope into lower halves
US4371183A (en) * 1980-12-22 1983-02-01 Dion Jean Paul Folding wheel-chair
US4422660A (en) * 1982-03-24 1983-12-27 American Hospital Supply Corporation Removable wheel assembly for wheelchairs
DE3227365A1 (en) * 1982-07-22 1984-03-29 MEYRA Wilhelm Meyer GmbH & Co KG, 4925 Kalletal FOLDABLE MEDICAL ELEVATOR (WHEELCHAIR)
JPS5919128U (en) * 1982-07-29 1984-02-06 工業技術院長 wheelchair
US4641848A (en) * 1985-04-15 1987-02-10 Ayers Robert C Wheelchair with rocking seat assembly
US4861056A (en) * 1987-11-12 1989-08-29 Iron Horse Productions, Inc. Folding wheelchair with improved frame and suspension system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Firmendruckschrift "MEYRA Rollstühle und Rehabilitationsmittel" *

Also Published As

Publication number Publication date
US5253886A (en) 1993-10-19
EP0495193A1 (en) 1992-07-22
HUT59814A (en) 1992-07-28
DE9100562U1 (en) 1991-04-11
HU213422B (en) 1997-06-30
DE59103286D1 (en) 1994-11-24
SK278856B6 (en) 1998-04-08
CS13792A3 (en) 1992-08-12
HU9200162D0 (en) 1992-04-28
CA2059483A1 (en) 1992-07-19
NO914995L (en) 1992-07-20
CZ281814B6 (en) 1997-02-12
RU2060725C1 (en) 1996-05-27
NO914995D0 (en) 1991-12-18
NO301212B1 (en) 1997-09-29

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