{HEAD ~ A detachable transmission mechanism} for a wheel chair includes {TAIL ~ a control unit}, two support frames, a suspension frame and a driving device 
includes
{ HEAD ~ A detachable transmission mechanism } for a wheel chair includes { TAIL ~ a control unit } , two support frames , a suspension frame and a driving device
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH