Tochigi Fuji Sangyo Kabushiki Kaisha

Yukio Yuhashi

Masao Teraoka

Sakuo Kurihara

Osamu Ishikawa

A differential apparatus comprises first and second rotary devices rotatable with respect to each other, a viscous clutch having a chamber filled with a viscous fluid and restricting a differential operation generated between the first and second rotary devices by the resistance of the viscous fluid, a friction clutch separated from the viscous clutch and restricting the differential operation, and a device for preventing the seal of the chamber from being reduced by an increase in pressure within the chamber and actuating the friction clutch in accordance with an input torque.

Differential gear assembly with viscous and friction clutch mechanisms

There is provided a power transmission unit comprising an input member for receiving a torque input from a ring gear connected to a drive pinion which is connected to a propeller shaft, first and second output members supported by the input member in a freely rotatable manner and engaged with right and left rear wheels, and first and second clutches arranged between the input member and the first and second output members respectively to release the connections between the input member and the first and second output members respectively with the help of the actions of cam devices for releasing clutches when the angular speed of the input member becomes smaller than those of the first and second output members.

Power transmission unit

A hydraulic power transmission device of the viscous shear type provides a rotatable driving connection between first and second shaft assemblies. A centrifugal clutch is interposed between the shaft assemblies to provide an overriding rotatable driving connection therebetween when the angular velocity of the first shaft assembly exceeds a predetermined level.

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Kitasaitama, Japan

Yukio Yuhashi