Fan clutch drive

Details Fan clutch drive Fan clutch drive

1974-12-04

1976-10-12

Wyche, Benjamin W.

192 clutches and power-stop control

Clutches

Operators

192 30W, 192 65, 92165PR, F16D 2508

Patent

active

039852148

ABSTRACT:
A clutched fan drive for a vehicle engine is disclosed which couples the engine cooling fan to a member driven by the vehicle engine when the engine coolant temperature exceeds a predetermined level, and which uncouples the fan when the engine temperature level falls below the predetermined level. The fan drive includes a driving member which is rotatably mounted on a fixed spindle, a ram piston which is slidably mounted on the spindle, and a driven member which is rotatably mounted on the ram piston and which is movable therewith. The engine coolant fan is coupled to the driven member, and both the driven member and the driving member are provided with a clutching mechanism which is engaged by a resilient spring which acts against the ram piston. Consequently, the disclosed clutch fan drive requires no complicated and expensive load transmitting splines between the clutch elements and further requires no rotating pressure seals or complicated bearings which must accommodate both rotation and translatory movement.

REFERENCES:
patent: 2637308 (1953-05-01), Dodge
patent: 2661148 (1953-12-01), Englander
patent: 2840316 (1958-06-01), Herbenar
patent: 2877751 (1959-03-01), Johnston
patent: 3103308 (1963-09-01), Wolfram
patent: 3684069 (1972-08-01), Pray
patent: 3684397 (1972-08-01), Elmer
patent: 3777866 (1973-12-01), Elmer

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