초록 ▼

A pulley for use with an endless metal belt, including pulley halves rotatable about an axis. The pulley halves include truncated conical portions symmetrically opposed to each other and outer surfaces disposed on the truncated conical portions so as to be engageable with the belt. The outer surface

A pulley for use with an endless metal belt, including pulley halves rotatable about an axis. The pulley halves include truncated conical portions symmetrically opposed to each other and outer surfaces disposed on the truncated conical portions so as to be engageable with the belt. The outer surface of each pulley half has a centerline average roughness (Ra) of 0.1 to 0.5 .mu.m, a Vickers hardness (Hv) of not less than 850 at a load of 200 g, and a microstructure with random fine irregularities in which a great number of recesses and projections are randomly located. A continuously variable transmission including the pulley is also disclosed.

대표청구항 ▼

[ What is claimed is:] [1.]1. A pulley for use with an endless metal belt, comprising:pulley halves rotatable about an axis and relatively moveable in a direction of the axis, said pulley halves including truncated conical portions symmetrically opposed to each other and outer surfaces disposed on s

[ What is claimed is:] [1.]1. A pulley for use with an endless metal belt, comprising:pulley halves rotatable about an axis and relatively moveable in a direction of the axis, said pulley halves including truncated conical portions symmetrically opposed to each other and outer surfaces disposed on said truncated conical portions so as to be engageable with the endless metal belt, said outer surfaces being axially opposed to each other and sloped relative to the axis, said outer surfaces having a centerline average roughness (Ra) of 0.1 to 0.5 .mu.m and a Vickers hardness (Hv) of not less than 850 at a load of 200 g.