During {HEAD ~ the downward motion} of the punch 18, as illustrated in FIG 4, {TAIL ~ the pressure} exerted by the punch forces the sintered compact to flow rearwardly in the type of backward extrusion process described in our aforementioned prior patent 
During { HEAD ~ the downward motion } of the punch 18 , as illustrated in FIG 4 , { TAIL ~ the pressure } exerted by the punch forces the sintered compact to flow rearwardly in the type of backward extrusion process described in our aforementioned prior patent
OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH