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