Viscous shear fluid couplings

Details Viscous shear fluid couplings Viscous shear fluid couplings

1977-05-06

1978-12-05

Herrmann, Allan D.

192 clutches and power-stop control

Clutches

Fluent material

192113B, F16D 3500

Patent

active

041281535

ABSTRACT:
The disclosure illustrates a viscous shear fluid fan drive comprising a driving disc received within an annular chamber of an output member. The disc and the chamber include closely spaced radially extending surfaces which transmit torque through a viscous fluid maintained between them. Pumping grooves are provided in the disc to insure rapid build up of hydrodynamic lubrication upon startup of the coupling. Cavities may be provided in the walls of the chamber to receive additional viscous fluid and extend service life of the coupling.

REFERENCES:
patent: RE25481 (1963-11-01), Weir
patent: 2743792 (1956-05-01), Ransom
patent: 3002595 (1961-10-01), Weir
patent: 3559785 (1971-02-01), Weir
patent: 3696899 (1972-10-01), Kongelka
patent: 3910391 (1975-10-01), Detty et al.
patent: 3978952 (1976-09-01), Hall

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