In one embodiment, {HEAD ~ grooves} are formed in the fixed scroll member to communicate a selected intermediate pressure and a discharge pressure to locations on {TAIL ~ the base plate} of the fixed scroll member 
In one embodiment , { HEAD ~ grooves } are formed in the fixed scroll member to communicate a selected intermediate pressure and a discharge pressure to locations on { TAIL ~ the base plate } of the fixed scroll member
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH