Patent ID: 6949039
Filing Date: 2005-09-27
Classification: F16H

Abstract:
1. A driven pulley for use on a main shaft defining a rotation axis, the driven pulley comprising: a first sheave having a first side and a second side, the first sheave comprising: a second sheave having a first side and a second side, the second sheave comprising: an axially-disposed helical spring having one end resting against the closed bottom of the annular space and an opposite end connected to a fixed location with reference to the first sheave; whereby, in use, the outer sleeve portion of the second sheave is housed in the internal enclosure of the first sheave and each follower is configured and disposed for being in engagement with a corresponding ramp, the sleeve portion of the first sheave being rigidly connected to the main shaft while the inner sleeve portion of the second sheave being free to rotate and slide with reference to the main shaft.