Patent ID: 8613342

Claim:
An assembly for propelling a pair of output wheel hubs having a connection for attaching a wheel of an engine powered piece of equipment comprising: (a) two integrated hydrostatic transmissions driven by a connection to the engine wherein when each hydrostatic transmission is driven it creates rotational energy directed to a hydrostatic transmission output shaft having an output wheel hub assembly connection member with an attached variable length linkage member; (b) two wheel hub assemblies each comprising a receiving member that receives the rotational energy from one corresponding hydrostatic transmission output wheel hub assembly connection member via a connection by the linkage member wherein the receiving member can rotationally drive an output wheel hub attached to the wheel hub assembly such that each output wheel hub can rotate independently of the other output wheel hub; (c) wherein each wheel hub assembly is positioned radially with respect to the corresponding hydrostatic transmission output shaft at a radius determined by the linkage member length.