Patent ID: 7648435
Filing Date: 2010-01-19
Classification: F16G,F16H

Abstract:
1. A belt-type continuously variable transmission comprising: a primary sheave including a pair of first clamp surfaces opposed to each other and a first belt groove defined between the first clamp surfaces, the primary sheave arranged to adjust a width of the first belt groove; a secondary sheave including a pair of second clamp surfaces opposed to each other and a second belt groove defined between the second clamp surfaces, the secondary sheave arranged to adjust a width of the second belt groove; and a belt endlessly wound between the first belt groove of the primary sheave and the second belt groove of the secondary sheave, the belt having contact surfaces that are clamped between the first clamp surfaces and between the second clamp surfaces; wherein a torque of the primary sheave is transmitted to the secondary sheave via the belt; an infusible powder defining a friction enhancing material on at least one of the first clamp surfaces of the primary sheave, the second clamp surfaces of the secondary sheave, and the contact surfaces of the belt; and the infusible powder has a property that it is not fused by heat and maintains a powder state during operation of the continuously variable transmission, and has a hardness lower than a hardness of the first clamp surfaces of the primary sheave and the second clamp surfaces of the secondary sheave.