CRANK PULLEY NOISE REDUCING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a low-cost crank pulley noise reducing device which has a simple structure and large noise reduction efficiency. SOLUTION: A sound absorbing material 10 constituted in a spiral shape is inserted into the inner peripheral part 7 of a space formed in a cylindrical shape in a crank pulley 1. COPYRIGHT: (C)2003,JPO