Patent ID: 6629474
Filing Date: 2003-10-07
Classification: B60K,F16D,Y10T

Abstract:
A transfer case comprising:an input shaft; a first output shaft driven by said input shaft; a second output shaft; a transfer assembly driven by said first output shaft; a bi-directional overrunning mode clutch assembly operably disposed between said transfer assembly and said second output shaft and including a first ring driven by said transfer assembly, a second ring mounted on said second output shaft, 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 said second output shaft, and a mode actuator that is moveable between a first position and a second position to establish corresponding AUTO and LOCK modes, said overrunning clutch is operable in its AUTO mode to permit relative rotation between said first and second output shafts in a first direction and prevent relative rotation therebetween in a second direction, and said overrunning clutch is operable in its LOCK mode to prevent relative rotation between said first and second output shafts in both directions; and a shift mechanism for controlling movement of said mode actuator.