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