Patent ID: 7137315

Claim:
A wheel hub for attaching to a vehicle, said wheel hub comprising: a hub shell including a chamber formed therein, and including a plate and a casing rotatably received in said chamber thereof, a hydraulic engine received in said chamber of said hub shell, and for attaching to the vehicle, and for allowing said hub shell to be rotated relative to said hydraulic engine and the vehicle, and said hydraulic engine including a rotatable spindle extended therefrom, and said hydraulic engine being attached between said plate and said casing to rotatably support said hub shell on said hydraulic engine and said plate and said casing, a coupling device coupled between said spindle of said hydraulic engine and said hub shell, to allow said hub shell to be driven by said hydraulic engine, and at least one fastener securing said plate and said casing together, to stably retain said hydraulic engine between said plate and said casing.