Viscous fluid coupling device

Details Viscous fluid coupling device Viscous fluid coupling device

1988-12-21

1990-03-13

Bonck, Rodney H.

192 clutches and power-stop control

Clutches

Fluent material

192 82T, F16D 3500, F16D 4325

Patent

active

049076825

ABSTRACT:
A viscous fluid coupling device especially is used for driving the cooling fan of engines and for controlling the rotation speed of the fan smoothly according to the temperature. The smooth change of torque transmission by the coupling device is performed by employing a specially shaped slot for fluid passageway. The increase rate of the opening area of the slot is smaller in a low temperature region than in a high temperature region.

REFERENCES:
patent: 3227254 (1966-01-01), Sutaruk
patent: 4295550 (1981-10-01), Hayashi
patent: 4502580 (1985-03-01), Clancey
patent: 4702360 (1987-10-01), Tanaka

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