Fan drive secant pumping grooves

Details Fan drive secant pumping grooves Fan drive secant pumping grooves

1975-08-25

1977-01-25

Herrmann, Allan D.

192 clutches and power-stop control

Clutches

Fluent material

192113B, F16D 3500

Patent

active

040046680

ABSTRACT:
A fluid coupling of the type adapted for a fan for an automotive cooling system. A driving disc turns within a housing to which the fan is coupled. One face of the disc carries concentric ridges or lands which are positioned to project into complementary concentric channels carried by the housing, with a shear fluid such as a silicone fluid at least partially filling the concentric channels. Secant grooves extend across the top of the interdigitated ridges of the drive disc and of the housing interior to cause the silicone shear fluid to move generally radially. Such fluid circulation increases the useful life of the shear fluid by inhibiting high temperature build-up thereof.

REFERENCES:
patent: 3419122 (1968-12-01), Connelly
patent: 3512622 (1970-05-01), Sutaruk
patent: 3584716 (1971-06-01), Coty

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