Patent ID: 8994236
Filing Date: 2015-03-31
Classification: F16D,H02K

Abstract:
1. A clutch assembly, comprising: a motor having a fixed stator and a rotor rotationally fixed on a rotatable rotor shaft; a nut rotationally fixed to the rotor shaft and including at least one first projection having a first ramp and a first tooth; a rotationally fixed, axially displaceable clutch member including at least one second projection having a second ramp and a second tooth; a rotationally fixed spring urging the nut axially away from the clutch member; a rotationally fixed electromagnet mounted between the nut and the clutch member and activatable to cause the first and second teeth to engage and prevent rotation of the rotor in a first direction, but allow rotation of the rotor in a second direction by separating the nut and clutch member as the first ramp ascends the second ramp.