Patent ID: 6862953
Filing Date: 2005-03-08
Classification: B60K,F16D,Y10T

Abstract:
1. A power transmission device comprising: a rotary input member adapted to receive drive torque from a source of torque; a rotary output member adapted to provide drive torque to an output device; and a torque transfer mechanism operable for transferring drive torque from said input member to said output member, said torque transfer mechanism including a bi-directional overrunning clutch having a first ring non-rotatably coupled to one of said rotary input member and said rotary output member, a second ring spaced apart from the other of said rotary input member and said rotary output member and rollers disposed in aligned cam tracks formed in facing surfaces of said first and second rings, said second ring adapted to circumferentially index relative to said first ring to cause said rollers to ride up said cam tracks and cause said second ring to frictionally engage the other of said rotary input member and said rotary output member.