BALK RING FOR SYNCHROMESH APPARATUS

摘要

A balk ring for use in a synchromesh apparatus for a power transmission mechanism is disclosed which is formed with ridge-shaped chamfer surfaces at one end of spline teeth thereof. Each of the chamfer surfaces is formed of at least two planes, the one beginning at the apex being steeper than the other which extends from the former. Upon the shifting operation of the power transmission mechanism, the apex of the chamfer surfaces of the sleeve is at first brought into meshing engagement with the steeper plane.