Patent ID: 7201264

Claim:
A power transfer device for use in a motor vehicle having a powertrain and first and second drivelines, comprising: a rotary input driven by the powertrain; a first rotary output driven by said input and coupled to the first driveline; a second rotary output coupled to the second driveline; a friction clutch operably disposed between said first and second rotary outputs; a clutch actuator for applying a clutch engagement force to said friction clutch, said clutch actuator including an operator mechanism having first actuator plate rotatable about an axis and having a set of first grooves and a first arm segment with a first cam surface formed thereon, a second actuator plate rotatable about said axis for angular movement relative to said first actuator plate and having a set of second grooves, balls disposed in aligned pairs of said first and second grooves, and a piston assembly including a follower engaging said first cam surface such that movement of said piston assembly between first and second positions causes corresponding relative angular movement of said first and second actuator plates between first and second angular positions so as to cause corresponding axial movement of said second actuator plate relative to said friction clutch; and a power-operated drive mechanism for controlling movement of said piston assembly.