192 clutches and power-stop control – Clutches – Fluent material
Patent
1978-10-04
1981-01-27
Bonck, Rodney H.
192 clutches and power-stop control
Clutches
Fluent material
192 82T, F16D 3310
Patent
active
042469953
ABSTRACT:
A viscous fan clutch is typically employed in a fan drive mechanism within a truck or automobile. A shaft, driven by the engine, rotates a clutch member within the fan drive. The clutch member is arranged for fluid engagement with a body member for the transmission of torque thereto when fluid is disposed in an operating chamber defined by complimentary shear surfaces in the clutch and body members. During relative rotation between the two members, fluid is pumped through a return passage to a valve coaxially disposed with the driven shaft which selectively directs a flow of viscous fluid alternately to a storage chamber or directly back into the operating chamber. The valve is biased into a first position in which the fluid is directed into a fluid storage chamber and is actuated into the second position by means of a coaxially disposed solenoid acting upon ferrous metal members of the valve. When the valve is in the second position, a port is opened for fluid communication between the fluid storage chamber and the operating chamber.
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patent: 3419122 (1968-12-01), Connelly
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patent: 3492975 (1970-02-01), Caroli et al.
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patent: 4056178 (1977-11-01), Detty
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patent: 4062432 (1977-12-01), Evans
patent: 4064980 (1977-12-01), Tinholt
Bonck Rodney H.
Eaton Corporation
Lewis J. G.
McCloskey R. J.
Wood D.
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