Patent ID: 8042642

Claim:
A vehicle comprising: a primary driveline that is configured to distribute rotary power to a first set of vehicle wheels; a power transmitting device having an input member and an output member, the input member being driven by the primary driveline, the output member being selectively coupled to the input member to receive rotary power therefrom; and a secondary driveline that is configured to distribute power to a second set of vehicle wheels, the secondary driveline having a propshaft, an axle input, a differential, a pair of axle shafts and at least one torque transfer device, the propshaft transmitting rotary power between the output member of the power transmitting device and the axle input, the axle shafts being rotatably coupled to an output of the differential and configured to transmit rotary power to the second set of vehicle wheels, the at least one torque transfer device being configured to selectively inhibit torque transmission between the axle input and the second set of vehicle wheels; wherein the power transmitting device includes a synchronizer; and wherein the synchronizer includes a collar that is mounted on a first intermediate member continuously driven by the input member, the collar being axially movable to engage a second intermediate member that is coupled for rotation with the output member.