{HEAD ~ A cam device} moves each piston reciprocally and includes {TAIL ~ a rotating member} having a first camming surface which is cylically rotated adjacent an end of each piston 
{ HEAD ~ A cam device } moves each piston reciprocally and includes { TAIL ~ a rotating member } having a first camming surface which is cylically rotated adjacent an end of each piston
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH