Patent ID: 8187127
Filing Date: 2012-05-29
Classification: F16H

Abstract:
1. A belt-type continuously variable transmission comprising a belt wound around a primary sheave and a secondary sheave, the secondary sheave comprising: a first sheave member; a second sheave member opposed to and displaced along an axis of the first sheave member to form a belt groove around which the belt is wound; a coil spring disposed coaxially with the second sheave member, at least partially uncovered at an end adjacent to the second sheave member, and urging the second sheave member toward the first sheave member; and a restricting member preventing the coil spring from buckling during decompression or compression, wherein the restricting member has a first annular portion extending across a plurality of turns of the coil spring, wherein in a most compressed state of the coil spring, one or more turns of the coil spring do not contact any member covering the coil spring.