The screw feed mechanism 39, which converts {HEAD ~ the rotating movement} of the thrust receiving flange 74 into {TAIL ~ a thrusting movement} of the output rod 33, includes a male thread member 95 and a female thread member 96 
into
The screw feed mechanism 39 , which converts { HEAD ~ the rotating movement } of the thrust receiving flange 74 into { TAIL ~ a thrusting movement } of the output rod 33 , includes a male thread member 95 and a female thread member 96
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH 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 OTH OTH OTH