Patent ID: 6435292
Filing Date: 2002-08-20
Classification: B62D

Abstract:
A drive system for driving a vehicle over a surface comprising:a flat track having an inner surface and an outer surface; driving lugs attached to the inner surface of the flat track; a driver for driving against the driving lugs, the driver positioned above the surface over which the vehicle is driven; a first end axle; a second end axle; wheels attached to the first axle and the second axle; the driver, the first end axle and the second end axle fixed with respect to the flat track such that the flat track is held in substantially constant tension;additional wheels, the wheels and the additional wheels in contact with the inner surface of the flat track as the flat track engages the surface, the additional wheels not fixed with respect to the first axle, the second axle and the driver; and an undercarriage and at least one suspension mount, wherein the driver, the first axle and the second axle are fixed in relation to the undercarriage and the additional wheels are attached to the undercarriage via the suspension mount so that the additional wheels are not fixed with respect to the undercarriage.