The clutch mechanism transmits the driving force of the input rotating element by {HEAD ~ the contraction} of {TAIL ~ the coil spring} 
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The clutch mechanism transmits the driving force of the input rotating element by { HEAD ~ the contraction } of { TAIL ~ the coil spring }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL