Patent ID: 7278946

Claim:
A power transfer device for use in a motor vehicle having a powertrain and first and second drivelines, comprising: a first output interconnecting the powertrain to the first driveline; a second output connected to the second driveline; an overrunning mode clutch operably disposed between said first and second outputs, said mode clutch is operable in a first mode to permit relative rotation between said first and second outputs in a first direction and prevent relative rotation therebetween in a second direction, said mode clutch is operable in a second mode to prevent relative rotation between said first and second outputs in both directions, and said mode clutch is operable in a third mode to permit relative rotation between said first and second output in both directions, said mode clutch including a first ring driven by one of said first and second outputs, a second ring operably disposed between said first ring and the other of said first and second outputs and having an actuation slot, rollers engaging a cam surface formed between said first and second rings and an actuator ring having a lug retained in said actuation slot, said actuator ring is operable in a first actuator position to permit movement of said lug into engagement with one of first and second end surfaces of said actuation slot, and said actuator ring is operable in a second actuator position to locate said lug in engagement with both of said first and second end surfaces of said actuator slot; a mode shift mechanism operable in a first mode position to shift said mode clutch into its first mode, in a second mode position to shift said mode clutch into its second mode and in a third mode position to shift said mode clutch into its third mode; and a shift system for moving said mode shift mechanism between its first, second and third mode positions.