Gear wheel for sleeves or roller chain drive e.g. chain drive of internal combustion engine has axis of rotation and pitch circle and distance between both changes along the peripheral of gear wheel

摘要

Gear wheel (9) has external teeth which exhibit a majority of teeth and tooth spacings (17) between the teeth. The distance (r TK) between an axis of rotation (18) and a pitch circle (23) of the gear wheel changes along its extent sinusoidally according to a formula. Independent claims are also included for the following: (A) Chain drive; and (B) Internal combustion engine.