The synchronizer 33, wherein the first stop mechanism includes {TAIL ~ a limit switch} mounted to one of the vehicle and the room, the limit switch being actuated when {HEAD ~ the room} is moved into the retracted position 
The synchronizer 33 , wherein the first stop mechanism includes { TAIL ~ a limit switch } mounted to one of the vehicle and the room , the limit switch being actuated when { HEAD ~ the room } is moved into the retracted position
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH