F - Mech Eng,Light,Heat,Weapons – 01 – P
Patent
F - Mech Eng,Light,Heat,Weapons
01
P
123/151
F01P 7/02 (2006.01) F01P 7/08 (2006.01) F16D 43/25 (2006.01) F16D 43/28 (2006.01)
Patent
CA 1081066
Abstract of the Disclosure A thermostatically controlled clutch assembly, e.g. for use in an automobile for coupling the cooling fan to its drive shaft, comprises a non- rotatable support shaft, an annular output member journalled for rotation about the support shaft, and an annular input member journalled for rotation about the support shaft and the output member. An annular actuating cylinder and piston assembly is journalled for rotation about the support shaft and connected for rotation with the input member, clutch driving plates being connected for rotation with the actuating cylinder and piston assembly and clutch driven plates being connected for rotation with the output member. First passage means within the support shaft conduct pressurised fluid from an external source to the actuating cylinder and piston assembly, and second passage means within the support shaft conduct a supply of cooling and lubri- cating fluid from the external source to the clutch driving and driven plates. Both the actuating fluid and the cooling and lubricating fluid are commonly drained from the clutch assembly for return to the external source. A control valve has a temperature sensing element arranged to open the valve to admit pressurised fluid to the first passage means at and above a predeter- mined temperature ambient to the sensing element to actuate the clutch and establish a driving connection between the input and output members, and to close the valve when the temperature ambient to the sensing element is below said predetermined temperature to deactuate the clutch. In all cases, a supply of pressurised fluid is arranged to be continuously coupled to the second passage means for supplying the cooling and lubricating fluid.
298210
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