Viscous fluid coupling device

Details Viscous fluid coupling device Viscous fluid coupling device

F - Mech Eng,Light,Heat,Weapons

01

P

123/157

F01P 5/02 (2006.01) F16D 35/02 (2006.01) F01P 5/12 (2006.01)

Patent

CA 1076904

ABSTRACT A viscous fluid coupling device for use in automotive vehicles includes a rotatable input shaft driven by an engine and a rotatable output member driven by the input shaft via shearing force of viscous fluid thereby rotating a cooling fan in unison therewith. The output member is made of aluminum alloy whose coefficient of thermal expansion is larger than that of iron. The device includes a bearing set which is interposed between the output member and a stationary member made of iron. The bearing set is braked by the output member and the stationary member, thereby decreasing the rotational speed of the fan, when ambient air temperature is low below a predetermined value.

305720

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