Patent ID: 6878088

Claim:
A transfer case comprising: an input shaft; first and second output shafts; a planetary gear assembly including a sun gear driven by said input shaft, a carrier driving said first output shaft, a ring gear, and a planet gear supported by said carrier and meshed with said sun gear and said ring gear, said ring gear interconnected to said sun gear so as to facilitate relative rotation therebetween and movement of said sun gear in response to movement of said ring gear; a first clutch plate fixed to said carrier; a second clutch plate fixed to a stationary member; a range clutch fixed to said ring gear and moveable between a high-range position and a low-range position to establish corresponding high-range and low-range drive connections between said input shaft and said carrier, said range clutch is operable in its high-range position to couple said first clutch plate for rotation with said sun gear and permit rotation of said ring gear, and said range clutch is operable in its low-range position to release said sun gear from coupled engagement with said carrier and engage said second clutch plate for braking rotation of said ring gear; a bi-directional overrunning mode clutch operably disposed between said first output shaft and said second output shaft including a mode actuator that is moveable between a first position and a second position to establish corresponding AUTO and LOCK modes, said mode 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 mode 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 range clutch and said mode actuator.