{HEAD ~ The door construction} 7 wherein the block of resilient material includes a recess for {TAIL ~ engagement} by the ball bearing 
{ HEAD ~ The door construction } 7 wherein the block of resilient material includes a recess for { TAIL ~ engagement } by the ball bearing
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH