At least one biasing member is held within the housing, {HEAD ~ the biasing member} biasing {TAIL ~ the slider} against the second portion of the arm 
At least one biasing member is held within the housing , { HEAD ~ the biasing member } biasing { TAIL ~ the slider } against the second portion of the arm
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH