As seen in FIG 8, {HEAD ~ both sides} of {TAIL ~ the wheelchair} are rigidly connected as through cross bar 110 
of
As seen in FIG 8 , { HEAD ~ both sides } of { TAIL ~ the wheelchair } are rigidly connected as through cross bar 110
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH