A cup shaped {HEAD ~ closure member} 52 surrounds the drive member 44, and abuts {TAIL ~ a flange} 54 of that drive member 
abuts
A cup shaped { HEAD ~ closure member } 52 surrounds the drive member 44 , and abuts { TAIL ~ a flange } 54 of that drive member
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH