Viscous fluid coupling device

Details Viscous fluid coupling device Viscous fluid coupling device

1979-11-21

1981-10-20

Bonck, Rodney H.

192 clutches and power-stop control

Clutches

Fluent material

192 82T, F16D 3500, F16D 4325

Patent

active

042955505

ABSTRACT:
A viscous fluid coupling device for controlling the revolutions per minute of a radiator cooling fan in three steps in response to the temperature of an engine. The viscous coupling device includes a rotor driven by an engine, a casing member, a cover member, a labyrinth formed between projections of the rotor and projections of the casing member, a partition plate dividing the interior of the casing member into an operating chamber and a reservoir chamber, a first oil returning passage and a first pump formed in the inner circumference of the partition plate, and a second oil returning passage and a second pump formed in the outer circumference of the partition plate, with temperature-controlled valve apparatus for controlling the passages to thus control the shearing force between the casing member and rotor.

REFERENCES:
patent: 3227254 (1966-01-01), Sutaruk
patent: 3363734 (1968-01-01), Sabat
patent: 3463282 (1969-08-01), Fujita et al.
patent: 3587801 (1971-06-01), Riner
patent: 3690428 (1972-09-01), LaFlame
patent: 3841451 (1974-10-01), Saylor et al.
patent: 4051936 (1977-10-01), Crisenbery et al.

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