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