Motor vehicles – Motor-carrying attachments – Driven steering wheel type
Patent
1989-06-02
1991-05-21
Marmor, Charles A.
Motor vehicles
Motor-carrying attachments
Driven steering wheel type
180907, 74105, 292 36, B60K 100
Patent
active
050167200
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 driving 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: 3622187 (1971-12-01), Emergy
patent: 4081047 (1978-03-01), Lovell et al.
patent: 4280580 (1981-07-01), Wojcik
patent: 4386672 (1983-06-01), Coker
patent: 4589124 (1986-05-01), Ruiz
patent: 4720119 (1988-01-01), Ritter
Kagen Alan M.
Marmor Charles A.
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