Variable speed pulley

摘要

A variable speed pulley having rearrangement structure for causing uniform distribution of a plurality of force applying elements utilized to control the width of the pulley groove as a function of the centrifugal forces developed during changes in the speed of the pulley. The rearrangement structure includes a coil spring connected in the structure to permit relative rotational movement between the fixed and movable pulley sheave halves as a result of changes of the force applied to the movable pulley sheave half during driving operation of the pulley. The rearrangement structure effectively minimizes vibration and noise by providing improved uniformity in the distribution of the force applying elements both in the steady state and speed and force changing conditions of the pulley.