Title: Detachable electric drive unit for wheelchair

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Abstract: A battery powered steerable electric drive unit for detachable connection to a conventional wheelchair comprises: a framework releasably connectable to the wheelchair frame by snap-on connectors; a drive assembly pivotably (steerably) mounted on the framework and including a ground-engaging wheel and battery-powered electric motor for driving the wheel; a detachable steering column pivotably and rotatably mounted on the framework and operatively connected to the drive assembly to effect steering when rotated about its longitudinal axis; a handle mounted transversley on the steering column and rotatable in opposite directions to various positions about its horizontal longitudinal axis; and an electric controller including switches responsive to handle rotation to control the direction and speed of motor rotation.


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