US3889963A - Chair provided with wheels - Google Patents

Chair provided with wheels Download PDF

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Publication number
US3889963A
US3889963A US388184A US38818473A US3889963A US 3889963 A US3889963 A US 3889963A US 388184 A US388184 A US 388184A US 38818473 A US38818473 A US 38818473A US 3889963 A US3889963 A US 3889963A
Authority
US
United States
Prior art keywords
chair
wheel assembly
wheels
frame
legs
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
US388184A
Other languages
English (en)
Inventor
Sven-Olof Brattgard
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.)
BRATTGARD SVEN OLOF
BRATTGARD SVEN#OLOF
Original Assignee
BRATTGARD SVEN OLOF
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
Priority claimed from SE10666/72A external-priority patent/SE367315B/xx
Priority claimed from SE7310418A external-priority patent/SE382557B/xx
Application filed by BRATTGARD SVEN OLOF filed Critical BRATTGARD SVEN OLOF
Application granted granted Critical
Publication of US3889963A publication Critical patent/US3889963A/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
    • 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
    • A61G2220/00—Adaptations of particular transporting means
    • A61G2220/10—Aircrafts
    • 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
    • A61G2220/00—Adaptations of particular transporting means
    • A61G2220/12—Trains
    • 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
    • A61G2220/00—Adaptations of particular transporting means
    • A61G2220/16—Buses
    • 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
    • A61G3/00—Ambulance aspects of vehicles; Vehicles with special provisions for transporting patients or disabled persons, or their personal conveyances, e.g. for facilitating access of, or for loading, wheelchairs
    • A61G3/02—Loading or unloading personal conveyances; Facilitating access of patients or disabled persons to, or exit from, vehicles
    • A61G3/06—Transfer using ramps, lifts or the like
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S297/00—Chairs and seats
    • Y10S297/04—Wheelchair

Definitions

  • a Wheel Chair is Provided having a Seat, a frame ith an upper part, a front wheel assembly and a rear 52 us. (:1 280/36 B; 296/20; 297/1310. 4 Wheel assembly connected to said pp Part, the rear 51 1m.
  • the present invention relates to a chair provided with wheels and comprising a seat, a frame with an upper part and a front wheel assembly, and a rear wheel assembly, connected to said upper part.
  • Wheel chairs used by persons having difficulties to use their legs can be of great many types depending upon the purpose involved.
  • the chairs can be designed to be pushed or to be driven by the person sitting in the chair by means of for example handwheels or a mechanism involving a connecting rod.
  • There are also motordriven wheel chairs providing different steering arrangements.
  • Sometimes also other types of sitting accommodations are required, for example when travelling in vehicles like a motor car, bus, train, airplane, etc. In such in stances it is difficult to design a wheel chair which is suitable to anchor in a vehicle in such a manner that the gravitational forces occurring can be absorbed. At the same time the normal height of a wheel chair can prove to be too great to permit its use in certain vehicles.
  • the advantage is moreover obtained that only one seat is required for the person, who needs a series of wheel chairs and other seats for different applications, which signifies an overall reduction of the cost of acquisition of an entire set.
  • the object of the invention is obtained by means of a chair in which the rear wheel assembly is displaceable from its normal position extending from the rear end of the underside of said frame upper part, so that the underside of the same is free from extending parts and can be moved up onto a supporting base which is raised compared to the surface, the wheels are intended to move on.
  • FIGS. 1, 2 and 3 show a wheel chair of the respective embodiment in side elevational view. The embodiments are described more in detail in the following.
  • the wheel chair comprises a seat with a support 1 for the back and a seat plate 3 supported by a frame plate 2 and suitably elbow-rests 4.
  • the frame plate 2 forms the upper part of the chair frame and is in its turn supported by front legs 5 provided with wheels 6 and a footrest 7, which are identically alike in all the embodiments.
  • the front legs 5 can be fixed or pivotable by means of a hinge arrangement connected with the plate 2 at the joints 8 whereby the legs can be fixed in the folded out position illustrated in the figures or alternatively in a position where they are folded against the plate 2.
  • the footrest 7 which can be in one or two sections can be folded up from the position illustrated in the figures against the legs 5. 1
  • the embodiment according to FIG. 1 is provided with rear legs 9 supporting the rear end of the plate 2 and equipped with casters l0 and at thepoint 11 connected with the plate 2 by a hinge arrangement and a locking device operated by means of a push button 12. They can be fixed for one part in the folded out position illustrated in the figure or in a position folded up against the plate 2. At its rear part the plate 2 moreover exhibits a roller 13.
  • the rear legs are indicated at 14 and they are provided with casters 15.
  • the rear legs are provided to be pushed in into a portion of the back support 1 from the position indicated at continuous lines to the one indi cated at dashed and dotted lines, in which position the legs are inserted.
  • a locking device operated by means of a push button 16 serves the purpose of fixing the rear legs 14 in both these positions.
  • the rear legs 14 have been adapted to the inclination of the back 1, and in order to prevent the rear points of support represented by the'wheels 15 from being located too far in inwards direction, the wheels are mounted on short lever arms.
  • the rear legs of course can be given another inclination by a suitable design of the back support 1.
  • the rear legs have been given a third design. They are indicated at 18 and are provided with wheels 19, which according to FIG. 3 can be of the same design as the wheels 6 of the front legs 5, but they can also be designed as casters according to FIG. 1.
  • the rearlegs 18 are fixed to a slide 21, which is displaceable in a guide 20 in the plate 2. They can be fixed to the slide 21 in such a way that they occupy the supporting position illustrated in FIG. 3 and they can also be designed to be folded up under the plate 2 around a hinge point 22.
  • both the leg pairs 5 and 18 in the last mentioned alternative are displaced sidewise in between them (at right angle to the plane of the paper in the drawing), so that they will not bump into each other during the folding operation.
  • any driving device for the chair is not shown, as in the embodiments illustrated, the chair is intended to be pushed.
  • the chair can be provided with some kind of hand or motor operated driving device.
  • Such a device must anyhow be of such design that there will not be any sizable portions pointing downwards from the plate 2, when the legs 5, 9 and l4, 18 respectively are folded up.
  • the purpose of the wheel chair according to the invention is to provide an adequate seat adapted to the user, which seat when the legs are folded out can be used as a wheel chair for short transports on a smooth floor or pavement.
  • the chair should be transferred to a base 17 which is raised compared to the level on which the wheels are rolling.
  • the raised base will support the chair whereafter the wheel chair according to the invention substantially serves the purpose of a seat.
  • a complete system in addition to the wheel chair according to any one of the three embodiments described can comprise a wheel chair base frame with large wheels adapted for easy driving in comfortable manner by hand propulsion on a smooth floor or pavement, a motor driven base frame for travelling over long distances also on uneven ground, a frame mounted in a motor car and exhibiting rails pivotable along a vertical axis on which rails it is possible to accommodate the wheel chair from the outside, and which after the legs have been folded up, can be pivoted into a forwards directed position, and seats provided with similar rails in buses or other collective means of transportation, which directly support the seat so that it easily can be fixed in such a manner that occurring gravitational forces can be absorbed.
  • the base 17 in question is provided with means permitting the plate 2 to slide onto the base from a position in front of the same and to be secured thereto.
  • the plate 2 When the plate 2 is in its intended position relative to the base 17, the latter support the rear part of the chair while the front parts are supported by the legs 5 with their wheels 6.
  • the whole chair can be carried by means of the base 17, whereby the seat is tipped rearwards when the sliding operation is finished, so that the front wheels lose their contact with the floor or ground.
  • the front legs 5 If the front legs 5 are foldable as previously described, they can be folded up when the chair is carried by the base 17.
  • the folding of the rear legs in the embodiment according to FIG. 1 is used when the chair should rest on a raised base as described while the folding of the frontlegs will occur only in special cases when it is not possible to leave the legs in their supporting position and the chair is fully carried by a raised base.
  • the possibility to fold the front legs as well as the rear legs in the embodiment according to FIG. 1 and 3 and to slide the rear legs in into the rear support by the embodiment according to FIG. 2 will serve the purpose to make the chair foldable to a small size when not in use.
  • the wheels 13 are intended to slide for example on a rail on the base frame 17, when a transfer is taking place. Similar wheels can also be chosen in the embodiment according to FIG. 2, but in this case the wheels 15 can also be used in their folded up position for the same purpose.
  • the base frame must be adapted in such a way that the plate 2 obtains support at its rear edge during the inserting operation of the rear legs 14, thus before the real displacing and accomodating operation on the base frame is taking place.
  • the chair can of course be used as a wheel chair as in the other embodiments, the legs and the wheels occupying the position indicated at continuous lines in FIG. 3.
  • the chair shall be used with a raised support 17, by way of example a rail, as previously has been described, the rear leg pair 18 is pushed forwards to the position indicated at dashed and dotted lines.
  • the guide 20 and the slide 21 as already mentioned are provided for this purpose. After the slide 21 has been released from a possibly occurring locking position relative to the rail 20, this forward displacement of the leg pair 18 can take place by the rail 17 being designed to push the leg pair before itself during the transfer operation of the chair onto the rail.
  • the rail 17 and the leg pair 18 are provided with some kind of coupling means, so that the leg pair 18 is drawn out by means of the rail 17 when the chair is pushed forwards to be removed from the rail.
  • Such a function can also be provided by a spring device in the plate 2 which tends to press the leg pair 18 backwards.
  • the front leg pair is made vertically adjustable as hinted in FIG. 3, in order to make the chair adaptable to different heights of supporting bases for its rear portion.
  • the leg according to FIG. 3 is divided up in one upper and one lower part, which can be displaced in the longitudinal direction of the leg relative to each other, a screw provided with a handle 23 and screwed into the upper part being designed to slide in a groove 24 in the lower part.
  • the front wheel pair 6 can be made to rest on the floor with the seat in correct position even if the height of the supporting base 17 for the rear part of the chair should vary in height.
  • the front legs 5 as well as the rear legs 18 can be adjusted in the manner described, especially in the embodiment according to FIG. 3, where the rear wheels 19 in their forwards pushed position together with the wheels 6 shape the front support of the chair.
  • the function of the chair is chosen by way of example only and within the scope of the invention additional alternatives can be imagined.
  • the rear legs according to FIG. 1 can not only be folded up in forward direction but backwards in upward direction.
  • the front legs can alternatively be designed to permit being folded up in forwards direction for insertion underneath the seat.
  • a chair provided with wheels comprising a seat, a frame with an upper part, a front wheel assembly and a rear wheel assembly connected to said upper part, said rear wheel assembly being displaceable from its normal position to one extending from the rear end of the underside of said frame upper part, so that the underside of the same is free from extending parts and is moveable onto an elevated supporting base, while at the same time being supported at ground level by the front wheel assembly, said rear wheel assembly being adjustable to the location of a support for the back connected to the sitting part of the seat.

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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)
US388184A 1972-08-17 1973-08-14 Chair provided with wheels Expired - Lifetime US3889963A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE10666/72A SE367315B (de) 1972-08-17 1972-08-17
SE7310418A SE382557B (sv) 1973-07-27 1973-07-27 Stol med hjul

Publications (1)

Publication Number Publication Date
US3889963A true US3889963A (en) 1975-06-17

Family

ID=26655781

Family Applications (1)

Application Number Title Priority Date Filing Date
US388184A Expired - Lifetime US3889963A (en) 1972-08-17 1973-08-14 Chair provided with wheels

Country Status (7)

Country Link
US (1) US3889963A (de)
JP (1) JPS4987039A (de)
CA (1) CA993341A (de)
DE (1) DE2341201A1 (de)
FR (1) FR2196146B1 (de)
GB (1) GB1443817A (de)
NL (1) NL7311122A (de)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4105242A (en) * 1977-03-02 1978-08-08 Terbeek Howard G Mobile chair
US4113307A (en) * 1976-04-27 1978-09-12 Day Frederick Lee Travel insert chair and method of transporting the physically handicapped
US4229039A (en) * 1976-04-27 1980-10-21 Day Frederick Lee Insert travel chair and method of transporting the handicapped
US4428615A (en) 1981-12-03 1984-01-31 Hynson Charles G Chair for immobile patients
US4453732A (en) * 1981-12-24 1984-06-12 Assanah Albert A Patient transport and care vehicle
US4527829A (en) * 1981-05-27 1985-07-09 Messerschmitt-Boelkow-Blohm Gesellschaft Mit Beschraenkter Haftung Foldable wheel chair, especially for invalids
US4607860A (en) * 1983-10-13 1986-08-26 Ignaz Vogel Folding wheelchair
US4809998A (en) * 1987-06-15 1989-03-07 K G Engineering, Inc. Collapsible wheelchair and lift assembly
US4826196A (en) * 1987-11-02 1989-05-02 Sitgo Corporation Folding wheelchair
US5087011A (en) * 1991-02-20 1992-02-11 Thomas J. Turner Detachable lockdown device for arena chair
US5503424A (en) * 1994-12-22 1996-04-02 Agopian; Serge Collapsible utility cart apparatus
US20080100036A1 (en) * 2006-10-31 2008-05-01 Volodymyr Ivanchenko Apparatus for transporting an invalid
US20080185879A1 (en) * 2007-02-07 2008-08-07 Mei Chuen Lin Folding chair with wheels
US20090064407A1 (en) * 2006-04-28 2009-03-12 Daniel Alberto Altaparro Device for Facilitating Access to a Sanitary Fitting
CN102240241A (zh) * 2010-05-12 2011-11-16 张廖元杰 折合轮椅
GB2480651A (en) * 2010-05-27 2011-11-30 Yuan-Chieh Chang Liao Collapsible wheelchair with rear-folding front legs, forward-folding rear legs and a forward-folding backrest
US20110291387A1 (en) * 2010-05-26 2011-12-01 Chang Liao Yuan-Chieh Foldable wheelchair
US20130001925A1 (en) * 2011-06-30 2013-01-03 Zhong Zhi-Ren Stroller

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3152876C2 (de) * 1981-05-27 1985-07-18 Messerschmitt-Bölkow-Blohm GmbH, 8012 Ottobrunn Rollstuhl für Behinderte mit einem Sitz zur Toilettenbenutzung
CA1280958C (en) * 1987-04-07 1991-03-05 Christopher Leon Ogle Mobile chair and seat form

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2583644A (en) * 1951-03-20 1952-01-29 Ivan A Grimes Foldable basket carrier
US3111331A (en) * 1962-03-05 1963-11-19 Burton H Locke Stair-climbing wheel chair
US3289219A (en) * 1964-10-12 1966-12-06 Weil Burt Combined ambulance cart and rolling chair
US3637232A (en) * 1969-10-02 1972-01-25 Weil Burt Cart having collapsible legs

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3088770A (en) * 1959-02-13 1963-05-07 Weil Cart having independently collapsible legs
US3469880A (en) * 1967-12-21 1969-09-30 George H Woodward Patient handling apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2583644A (en) * 1951-03-20 1952-01-29 Ivan A Grimes Foldable basket carrier
US3111331A (en) * 1962-03-05 1963-11-19 Burton H Locke Stair-climbing wheel chair
US3289219A (en) * 1964-10-12 1966-12-06 Weil Burt Combined ambulance cart and rolling chair
US3637232A (en) * 1969-10-02 1972-01-25 Weil Burt Cart having collapsible legs

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4113307A (en) * 1976-04-27 1978-09-12 Day Frederick Lee Travel insert chair and method of transporting the physically handicapped
US4229039A (en) * 1976-04-27 1980-10-21 Day Frederick Lee Insert travel chair and method of transporting the handicapped
US4105242A (en) * 1977-03-02 1978-08-08 Terbeek Howard G Mobile chair
US4527829A (en) * 1981-05-27 1985-07-09 Messerschmitt-Boelkow-Blohm Gesellschaft Mit Beschraenkter Haftung Foldable wheel chair, especially for invalids
US4428615A (en) 1981-12-03 1984-01-31 Hynson Charles G Chair for immobile patients
US4453732A (en) * 1981-12-24 1984-06-12 Assanah Albert A Patient transport and care vehicle
US4607860A (en) * 1983-10-13 1986-08-26 Ignaz Vogel Folding wheelchair
US4809998A (en) * 1987-06-15 1989-03-07 K G Engineering, Inc. Collapsible wheelchair and lift assembly
US4826196A (en) * 1987-11-02 1989-05-02 Sitgo Corporation Folding wheelchair
US5087011A (en) * 1991-02-20 1992-02-11 Thomas J. Turner Detachable lockdown device for arena chair
US5503424A (en) * 1994-12-22 1996-04-02 Agopian; Serge Collapsible utility cart apparatus
US20090064407A1 (en) * 2006-04-28 2009-03-12 Daniel Alberto Altaparro Device for Facilitating Access to a Sanitary Fitting
US20080100036A1 (en) * 2006-10-31 2008-05-01 Volodymyr Ivanchenko Apparatus for transporting an invalid
US20100052270A1 (en) * 2006-10-31 2010-03-04 Volodymyr Ivanchenco Apparatus for transporting an invalid
US7841611B2 (en) 2006-10-31 2010-11-30 Volodymyr Ivanchenko Apparatus for transporting an invalid
US7641211B2 (en) 2006-10-31 2010-01-05 Volodymyr Ivanchenko Apparatus for transporting an invalid
US20080185879A1 (en) * 2007-02-07 2008-08-07 Mei Chuen Lin Folding chair with wheels
US7410211B1 (en) * 2007-02-07 2008-08-12 Mei Chuen Lin Folding chair with wheels
CN102240241A (zh) * 2010-05-12 2011-11-16 张廖元杰 折合轮椅
US20110291387A1 (en) * 2010-05-26 2011-12-01 Chang Liao Yuan-Chieh Foldable wheelchair
GB2480651A (en) * 2010-05-27 2011-11-30 Yuan-Chieh Chang Liao Collapsible wheelchair with rear-folding front legs, forward-folding rear legs and a forward-folding backrest
GB2480651B (en) * 2010-05-27 2014-04-02 Yuan-Chieh Chang Liao Foldable wheelchair
US20130001925A1 (en) * 2011-06-30 2013-01-03 Zhong Zhi-Ren Stroller
US8657325B2 (en) * 2011-06-30 2014-02-25 Wonderland Nurserygoods Company Limited Stroller with assistant wheel

Also Published As

Publication number Publication date
DE2341201A1 (de) 1974-02-28
CA993341A (en) 1976-07-20
JPS4987039A (de) 1974-08-20
FR2196146A1 (de) 1974-03-15
GB1443817A (en) 1976-07-28
FR2196146B1 (de) 1978-01-06
NL7311122A (de) 1974-02-19

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