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