By actuating the drive mechanism, {HEAD ~ the cover} is moved through {TAIL ~ a predetermined distance} in such a manner that when it is in the mounted position, the toilet seat body is completely surrounded by the tubular cover 
By actuating the drive mechanism , { HEAD ~ the cover } is moved through { TAIL ~ a predetermined distance } in such a manner that when it is in the mounted position , the toilet seat body is completely surrounded by the tubular cover
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL 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