| 摘要 |
A power transmission capable of transmitting power to both the front and rear sets of wheels of a vehicle, and also to automatically selectively transmit power to the slower rotating set of front or rear wheels. The transmission comprises an inner driving hub which acts through two interconnected sets of overrunning roller clutches to drive either or both of a forward and rear annular driven output member. The forward driven member is connected through a laterally extending chain drive to in turn drive a forwardly extending propeller shaft to transmit power to the front set of wheels to the vehicle. The rear driven member acts through a rearwardly extending propeller shaft to supply power to the rear set of wheels.
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