Motor vehicles – Power – Electric
Patent
1989-01-30
1990-10-09
Marmor, Charles A.
Motor vehicles
Power
Electric
180 65, 180907, 2803041, 297DIG4, B60K 102
Patent
active
049614738
ABSTRACT:
A kit for converting a hand-powered wheelchair to an electric motor-powered wheelchair is disclosed. The kit includes a pair of DC electric motors, each motor being connected to a drive wheel for rotating the drive wheel. The motors are mounted on the supporting frame of the chair for pivotal movement relative to the frame between a first position with the drive wheel adjacent to but spaced from the rim of one of the large diameter rear wheels of the chair and a second position with the drive wheels in engagement with the wheels so that rotation of the drive wheels will rotate the large wheels and move the chair. Levers are mounted on the frame for moving the motors between the first and second positions. A battery supplies power to the motors through switches that control the flow of electricity to the motors.
REFERENCES:
patent: 2798565 (1957-07-01), Rosenthal et al.
patent: 3786887 (1974-01-01), Rosenthal et al.
patent: 3955639 (1976-05-01), Cragg
patent: 4592570 (1986-06-01), Nasgiri
patent: 4759418 (1988-07-01), Goldenfeld et al.
patent: 4773494 (1988-09-01), Anderson
patent: 4805711 (1989-02-01), Lautzenhiser
Advertisement from Home Care Apr. 1988 Issue.
Johnson Brian L.
Marmor Charles A.
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