FIGS 1 and 2 are views for explaining how the crowning curve of {HEAD ~ the tooth surface} of the outer tooth gear of the pinion of {TAIL ~ the flexible coupling} is determined 
FIGS 1 and 2 are views for explaining how the crowning curve of { HEAD ~ the tooth surface } of the outer tooth gear of the pinion of { TAIL ~ the flexible coupling } is determined
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH