Dry variable speed drive mechanism

摘要

A variable drive includes a rotatable drive shaft, a fixed sheave fixed axially relative to the drive shaft and mounted for rotation with the drive shaft, and a movable sheave mounted for axial movement relative to the drive shaft. A plurality of drive fingers project from one of the sheaves. A plurality of recesses are formed in the other sheave. Each drive finger is movably received by a corresponding one of the recesses. A bearing member is interposed between the drive fingers and the other sheave. The bearing member includes a plurality of bearing fingers. Each bearing finger is positioned between one of the drive fingers and a wall of a corresponding one of the recesses.

主权项

1. A variable speed drive comprising:
a rotatable drive shaft; a fixed sheave fixed relative to the drive shaft and mounted for rotation with the drive shaft; a movable sheave mounted for axial movement relative to the drive shaft; a plurality of drive fingers projecting axially from one of either the fixed sheave or the movable sheave; a bearing member comprising a plurality of axially extending bearing fingers, each bearing finger being adjacent a corresponding one of the drive fingers; and a plurality of recesses in the other of either the fixed sheave or the movable sheave, each drive finger and corresponding bearing finger being movably received by a corresponding one of the recesses, and each bearing finger forming a bearing surface which slidably engages a surface of a corresponding one of the recesses.