Land vehicles – Wheeled – Occupant propelled type
Patent
1991-11-12
1993-12-21
Focarino, Margaret A.
Land vehicles
Wheeled
Occupant propelled type
70226, 70227, B60R 2500
Patent
active
052716368
ABSTRACT:
A travel restricting device for use with a wheelchair of the type having a frame, a seat attached to the frame and wheels mounted for rotation on opposite sides of the frame. The device includes arms having longitudinally opposing outer ends, and hooks at the outer ends of the arms for engaging the wheels. The arms can be extended to move the hooks away from each other or retracted to move the hooks toward each other. A spring biasing the arms toward a retracted position secures the hooks in the wheels such that the device is supported by the wheels for movement with the wheels. The device as secured to the wheels engages the frame upon rotation of the wheels in a first direction for restricting travel of the wheelchair in the first direction and engages the surface supporting the wheelchair upon rotation of the wheels in a second direction for restricting travel of the wheelchair in a second direction.
REFERENCES:
patent: 1432657 (1922-10-01), Bednar
patent: 1443009 (1923-01-01), Davis
patent: 1488893 (1924-04-01), Plouffe
patent: 1504220 (1924-08-01), Degen
patent: 3338338 (1967-08-01), Lindeen
patent: 3907072 (1975-09-01), Shafer
patent: 4641994 (1987-02-01), Hankison
patent: 4688843 (1987-08-01), Hall
patent: 5134868 (1992-08-01), Bethards
Dell Jerry W.
Mohrman Daniel P.
Boehler Anne
Focarino Margaret A.
The Jewish Hospital of St. Louis
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