Wheelchair

Details Wheelchair Wheelchair

2005-03-08

2005-03-08

Lerner, Avraham (Department: 3611)

Land vehicles

Wheeled

Occupant propelled type

C280S250100, C188S00200R

Reexamination Certificate

active

06863293

ABSTRACT:
A wheelchair has actuation plates provided in juxtaposition with the seat to descend when a user sits on the seat to lower the seat with the user's weight and to ascend when the user rises from the seat to permit the seat to return with removal of the weight. A brake is mounted on the axle shafts to brake the axle shafts and energized constantly in a non-braking direction. Levers are coupled directly or indirectly to the brake to move according to descending motions of the actuation plates to put the brake in a non-braking state and to move according to ascending motions of the actuation plates to put the brake in a braking state. Biasing devices for evacuating legs that extend from the seat and/or steps that are mounted onto the legs.

REFERENCES:
patent: 4623043 (1986-11-01), Babilas
patent: 5203433 (1993-04-01), Dugas
patent: 5894912 (1999-04-01), Dobben
patent: 5984334 (1999-11-01), Dugas
patent: 6352138 (2002-03-01), Duran et al.
patent: 6371503 (2002-04-01), Ritchie et al.
patent: 6688437 (2004-02-01), Usherovich
patent: 6739610 (2004-05-01), Connors et al.
patent: 20030146056 (2003-08-01), Wren
patent: 51-115337 (1976-09-01), None
patent: 52-29043 (1977-03-01), None
patent: 60-32920 (1985-03-01), None
patent: 3000205 (1994-05-01), None
Kubo Kazuo, “Wheelchair and Automatic Brake Device for Wheelchair,” Apr. 7, 1998, Patent Abstracts of Japan.
Masashi et al., “Wheelchair,” Oct. 8, 2002, Patent Abstracts of Japan.
Dedokoro Toshimi, “Wheelchair for Physically Handicapped Person,” Oct. 30, 2001, Patent Abstracts of Japan.

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