Patent ID: 7051854
Filing Date: 2006-05-30
Classification: F16D

Abstract:
1. A wrap spring clutch comprising: a drive shaft with a shoulder and a hub, all configured to rotate about an axis; an output member mounted over the drive shaft, the output member configured with a first groove; a wrap spring helically wrapped about the drive shaft and over the hub, the wrap spring having a first wrap end and a second wrap end, wherein the first wrap end is press fit into the first groove; a bushing mounted over the drive shaft, the bushing having a first portion and a second portion, wherein the first portion is coupled between the drive shaft and the second wrap end; and a control ring mounted over the drive shaft and fixed to the second portion of the bushing thereby defining a second groove and also thereby press fitting the second wrap end into the second groove, wherein the control ring is controllably pulled against the shoulder thereby causing the wrap spring to wrap down onto the hub such that the drive shaft and output member rotate together.