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