Patent ID: 6488110
Filing Date: 2002-12-03
Classification: B60G,B60K

Abstract:
A vehicle drive system comprising:a frame; a motor mounted to the frame, the motor having a motor shaft powered by the motor; a first wheel assembly comprising: a first control arm extending generally transversely from the frame, the first control arm having a proximal end. pivotally connected to the frame in a manner to permit pivoting movement of the first control arm in a generally vertical arcuate path relative to the frame; a first axle received within the first control arm for rotation relative thereto, a proximal end of the first axle being operatively connected to the motor shaft in a manner so that rotation of the motor shaft causes rotation of the first axle; a first sprocket fixedly mounted to the first axle; and a first wheel fixedly mounted to the first axle; a second wheel assembly comprising: a second control arm extending generally transversely from the frame and generally parallel to the first control arm, the second control arm having a proximal end pivotally connected to the frame in a manner to permit pivoting movement of the second control arm in a generally vertical arcuate path relative to the frame; a second axle received within the second control arm for rotation relative thereto; a second sprocket fixedly mounted to the second axle; and a second wheel fixedly mounted to the second axle; and a drive chain trained around the first and second sprockets in a manner so that rotational motion of the first sprocket causes rotational motion of the second sprocket.