{TAIL ~ At least one buffering member}, such as coil spring, is preferably located between the second support and {HEAD ~ the second housing} 
{ TAIL ~ At least one buffering member } , such as coil spring , is preferably located between the second support and { HEAD ~ the second housing }
TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD