Even if {HEAD ~ the stopper} becomes slack when the cover is closed, due to the action of the biasing member, {TAIL ~ this slack portion} is received within the receiving portion 
Even if { HEAD ~ the stopper } becomes slack when the cover is closed , due to the action of the biasing member , { TAIL ~ this slack portion } is received within the receiving portion
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH