Patent ID: 7395736

Claim:
An all-wheel drive system for a vehicle having an engine and a drive shaft, the all-wheel drive system being arranged between the drive shaft and front and rear propellable shafts, wherein the drive shaft is interconnected to one of said front and rear propellable shafts by a first clutch and the drive shaft is interconnected to another of said front and rear propellable shafts by a second clutch, and the front propellable shaft being coupled to front wheels of the vehicle and the rear propellable shaft being coupled to rear wheels of the vehicle, for selectively transferring torque from the drive shaft to at least one of the front wheels and the rear wheels depending upon whether either or both of said first and second clutches is engaged, characterized in that the all-wheel drive system comprises at least first and second actuators being coupled to said first and second clutches, where at least said first clutch is engaged by a spring and at least said first actuator is coupled for disengaging said first clutch when the first actuator is operated, and where at least said second actuator is coupled for engaging said second clutch when the second actuator is operated.