Viscous fluid coupling

Details Viscous fluid coupling Viscous fluid coupling

1985-12-18

1987-10-27

Ostrager, Allen M.

192 clutches and power-stop control

Clutches

Fluent material

192 82T, F16D 3500, F16D 4325

Patent

active

047023600

ABSTRACT:
A viscous fluid coupling especially used for driving the cooling fan of engines, changing the rotation speed of the fan smoothly according to the temperature. The smooth change of the rotation speed, that is, the smooth change of torque transmission by the coupling is performed by employing a valve device which has a slot for passing fluid and a specially shaped valve member movable to control the opening and closing of the slot so that the rate of increase of the opening area of the slot is smaller in a low temperature region than in a high temperature region.

REFERENCES:
patent: 4036339 (1977-07-01), Kikuchi
patent: 4051936 (1977-10-01), Crisenbery et al.
patent: 4313531 (1982-02-01), Hori et al.
patent: 4502580 (1985-03-01), Clancey
patent: 4574929 (1986-03-01), Hayashi et al.

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