[특허]Combination wheelchair and walker

[미국특허] Combination wheelchair and walker 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B62M-001/14
출원번호	US-0492216 (1995-06-19)
발명자 / 주소	Johnson Candace L. (10466 Moselle St. San Diego CA 92131)
인용정보	피인용 횟수 : 41 인용 특허 : 0

초록 ▼

A combination wheelchair/walker when in a wheelchair configuration having four spaced apart surface support wheels positioned on each corner of a generally rectangular form in which a person is supported thereby. The rear pair of wheels fixed in their direction of travel and the front pair of wheels being pivotable through 360 degrees. In the walker configuration the generally rectangular form is converted into a generally triangular or trapezium support form with the two rear wheels remaining in their original spaced apart position with the front two wheels moved closer together in a relatively reduced spaced apart relationship acting effectively as slightly spaced apart dual wheels. The seat platform of the wheelchair is rigid and folds up against the front of the back of the device in its walker or transport/storage configuration. For storage the rigid seat folds up against the back, the sides of the wheelchair/walker fold inwardly against the back one side over the other in a minimum front to back dimension nesting relationship. A spring biased locking pin secures the sides in the three positions.

대표청구항 ▼

A convertible wheelchair/walker device which is convertible between a wheelchair, a walker, and a transport or storage configuration, comprising: a back frame formed by a pair of uprights interconnected by at least one cross-member, one of said uprights having an extension member extending forwardly therefrom and each of said uprights having a surface support wheel with a fixed direction of rotation mounted at a lower end thereof; a substantially planar rigid seat pivotably connected to said cross-member; a pair of side frame members, each having a surface support wheel mounted at a lower forward end thereof for pivotable movement about a vertical axis, one of said side frame members being pivotally connected at a rearward end directly to one of said pair of uprights by means of a first pivotal connection and the other side frame member being connected at a rearward end to said extension member of said one upright by means of a second pivotal connection, the wheelchair/walker device being in a wheelchair mode with a substantially rectangular configuration in plan form when the side frame members are extending forwardly from the uprights and substantially parallel to each other and the seat has been pivoted to a substantially horizontal position between the side frame members, a walker mode with a triangular configuration in plan form when the seat has been pivoted to a substantially vertical position extending between the uprights and the side frame members have been pivoted to bring their forward ends into close proximity, and a transport/storage mode with the side frame members extending parallel to the back frame when the seat has been pivoted to a substantially vertical position extending between the uprights, the one side frame member has been pivoted against an under surface of the seat, and the other side frame member has been pivoted against the one side frame member; and locking means located within said first and second pivotal connections for selectively locking said pair of side frame members in selected pivotal positions relative to the uprights to define the wheelchair, walker, and transport/storage modes.

이 특허를 인용한 특허 (41) 인용/피인용 타임라인 분석

Hallgrimsson,Bjarki, Brake handle assembly for walker.
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Eddy, Zach; Winata, Nicodemus; Andersen, Maggie, Chassis for a wheelchair.
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Hallgrimsson, Bjarki; Dobbin, Sarah; Macmillan, Douglas D., Combination walker and transport chair.
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Danziger,Robert, Combination walker and wheelchair with improved ergonomic design.
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Eddy, Zach; Winata, Nicodemus; Andersen, Maggie, Compact wheelchair assembly with removable wheels and methods therefor.
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Eddy, Zach; Winata, Nicodemus; Andersen, Maggie, Compact wheelchair assembly with removable wheels and methods therefor.
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Maggiore, Albert P.; Snyder, Carol D., Convertible walking and riding device and method of using the same.
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Derks, Richard P.; Adhikari, Ishwor P., Convertible wheeled patient aid.
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Chen, Cheng-Nan, Folding device for wheelchair.
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Chen, Kuang-Muh; Chen, Liang Kuo, Folding walker with removable back rest.
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Willis, Phillip Minyard, Frame for support device.
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Willis,Phillip Minyard, Frame for support device.
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Meyers, Daniel Seth; Boar, Cristian; Xu, Ming, Height adjustable rolling walker for transportation seating.
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Van Eeden, Adriaan, Inter-convertible single person type transporting aid.
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Owens,John; Bly,Robert R.; Wysocki,Kevin S., Inwardly folding rollator with an upwardly pivotable seat.
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Willis, Phillip Minyard, Mobile support assembly.
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Willis, Phillip Minyard, Mobile support assembly.
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Willis, Phillip Minyard, Mobile support assembly.
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Willis, Phillip Minyard; Bernard, Randy, Mobile support assembly.
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Willis, Phillip Minyard; Bernard, Randy, Mobile support assembly.
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Willis,Phillip Minyard, Mobile support assembly.
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Aaron J. Epstein, Motorized walker/wheelchair and method.
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Naucke, Leslie R, Multiple use ambulatory device.
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Kutsch, John; Brown, Corbett; Wang, Zhiliang, Nesting wheeled personal conveyances.
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Kramer ; Jr. Duwayne E. ; Traylor Jerry L. ; Ernst James, Powered wheelchair with separating frame.
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Owens, John, Rollator.
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Owens,John, Rollator.
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Owens,John; Lescher,John; Wysocki,Kevin; Bly,Robert R., Rollator.
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Meyers, Daniel Seth; Boar, Cristian, Rolling walker.
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Meyers, Daniel Seth; Boar, Cristian, Rolling walker and handle grips thereof.
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Owens, John, Seat for an ambulatory device.
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Joseph Battiston, Seated walker.
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Razon, Eli, Sit down and stand up walker with seat assembly.
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Jacobs, David P.; Adhikari, Ishwor P.; Derks, Richard P., Transport wheelchair.
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Harper, Sebert, Visually appealing versatile rollable and foldable chair.
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Eli Wohlgemuth CA; Koen De Winter CA, Walker chair.
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Nabeta, Esther Juliet V., Walker with positionable handles.
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Chan, Andy, Wheelchair.
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Kutsch, John; Brown, Jr., Corbett; Wang, Zhiliang, Wheeled personal conveyance.
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Kutsch, John; Brown, Jr., Corbett; Wang, Zhiliang, Wheeled personal conveyance.
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Serhan,Michael, Wheeled walker.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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[미국특허] Combination wheelchair and walker 원문보기