Patent ID: 7779978
Filing Date: 2010-08-24
Classification: F16D

Abstract:
1. A clutching device comprising: an outer race having a radially inward surface having a plurality of axial ridges to define outer race pockets; an inner race having a radially outward surface having a plurality of axial ridges to define inner race pockets opposed to the outer race pockets; a plurality of rollers positioned between the outer and inner races in the outer and inner race pockets; an axial projection coupled for rotation with one of the inner and outer race; an actuator plate coupled for rotation with one of the inner and outer race and axially moveable between a first position wherein the actuator plate engages the axial projection and a second position wherein the actuator plate does not engage the axial projection; and an annular electric coil for moving the actuator plate from the first position to the second position, wherein between the first and second positions the actuator plate moves a distance B and wherein the first position annular coil is positioned from the actuator elate a distance A that is greater than the distance B such that the actuator plate does not touch the coil.