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