Ramped clutch plate for a viscous fluid clutch

Details Ramped clutch plate for a viscous fluid clutch Ramped clutch plate for a viscous fluid clutch

1991-04-22

1992-05-12

Lorence, Richard

192 clutches and power-stop control

Clutches

Fluent material

F16D 3500

Patent

active

051119234

ABSTRACT:
A viscous fluid clutch includes a clutch plate rotatably driven by an input shaft. The clutch plate includes a plurality of concentric, annular lands and grooves in a rear face which are mated with complementary lands and grooves of a clutch body to form a shear zone. A plurality of passages are provided in the clutch plate lands and grooves for directing fluid from a reservoir to the shear zone. A first system of arcuate ramps are provided in a front surface of the clutch plate facing a pump plate of the clutch. The arcuate ramps are radially aligned with pump plate orifices and enhance the pump-out of fluid through the orifices. If desired, a second system of circumferential ramps can be provided about the periphery of the clutch plate to enhance the pump-out of fluid.

REFERENCES:
patent: 3263783 (1966-08-01), Sutaruk
patent: 3268041 (1966-08-01), Roper
patent: 3419122 (1968-12-01), Connelly
patent: 3559785 (1971-02-01), Weir
patent: 3584716 (1971-06-01), Coty
patent: 3856122 (1974-12-01), Leichliter
patent: 3983980 (1976-10-01), Weintz
patent: 3990556 (1976-11-01), Hayashi et al.
patent: 4958709 (1990-09-01), Kennedy

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