a screw feed mechanism housed in {HEAD ~ a second housing} with {TAIL ~ a second housing opening}, wherein the second housing supports a thrust force acting on a thrust receiving flange provided to a male thread member of the screw feed mechanism and the first housing opening is connected to the second housing opening in an axial direction; and 
with
a screw feed mechanism housed in { HEAD ~ a second housing } with { TAIL ~ a second housing opening } , wherein the second housing supports a thrust force acting on a thrust receiving flange provided to a male thread member of the screw feed mechanism and the first housing opening is connected to the second housing opening in an axial direction ; and
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH