Patent ID: 6585615
Filing Date: 2003-07-01
Classification: F16H

Abstract:
A power transmission ring comprising:an outer periphery which, when said power transmission ring is in operation, has a belt of a power transmission system looped thereover; a plastic ring dimensioned to be held between first and second power transmission surfaces of the power transmission system, each of the first and second transmission surfaces being formed on a corresponding lateral surface of first and second sheaves of the power transmission system opposed to each other and allowed to be decentered relative to an axis of the first and second sheaves, said plastic ring having first and second tapered raceway surfaces on lateral surfaces thereof which are designed to be in parallel relation with the first and second power transmission surfaces, respectively, and to allow said first and second raceway surfaces to be contacted by the first and second power transmission surfaces, respectively, when said power transmission ring is in operation; and a metallic ring having first and second tapered surfaces formed on opposite lateral surfaces thereof in parallel relation with the first and second raceway surfaces, respectively, and unified with the plastic ring.