Motor vehicles – Motor-carrying attachments – Driven steering wheel type
Patent
1991-03-07
1992-06-30
Marmor, Charles A.
Motor vehicles
Motor-carrying attachments
Driven steering wheel type
180214, 180 193, 180907, B60K 100
Patent
active
051254689
ABSTRACT:
A battery powered steerable electric drive unit for detachable connection to a conventional wheelchair having a collapsible wheelchair frame comprises: a support releasably connectable to the wheelchair frame by an adjustable releasably lockable attachment mechanism; a drive assembly pivotably (steerably) mounted on the support and including a ground-engaging wheel and a battery powered electric motor for dirving the wheel; a solenoid-operated brake engageable with a disc-like surface of a pulley in the drive mechanism for the wheel; a detachable steering column having a handle mounted thereon and pivotably and rotatably mounted on the support; an adjustable steering mechanism mounted on the support and connected between the steering column and the drive assembly to effect steering when the steering column is rotated about its longitudinal axis; and an electric controller comprising an off-forward-reverse switch, a speed control switch and a brake switch mounted on the handle, and further comprising a solid-state electronic control circuit mounted on the support and responsive to operation of the switches to control the motor and the brake.
REFERENCES:
patent: 3213957 (1965-10-01), Wrigley
patent: 3387681 (1968-06-01), Rabjohn
patent: 4063612 (1977-12-01), Weiss
patent: 4081047 (1978-03-01), Lovell et al.
patent: 4386672 (1983-06-01), Coker
patent: 4570739 (1986-02-01), Kramer
patent: 4667136 (1987-05-01), Bell
patent: 4729447 (1988-03-01), Morse
patent: 4776416 (1988-10-01), Morse
Boehler Anne Marie
Marmor Charles A.
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