Internal airflow check valve and method for a viscous fluid clut

Details Internal airflow check valve and method for a viscous fluid clut Internal airflow check valve and method for a viscous fluid clut

1990-04-02

1990-11-13

Bonck, Rodney H.

192 clutches and power-stop control

Clutches

Fluent material

192 82T, F16D 3500

Patent

active

049699202

ABSTRACT:
A viscous fluid fan clutch assembly for a vehicle includes an internally-mounted pump plate for separating a working chamber from a reservoir. At least one fluid gate is provided in the pump plate to permit fluid flow from the reservoir to the working chamber. Only one discharge orifice is provided in the pump plate for permitting the return of fluid from the working chamber to the reservoir. Air vents are provided inbound of the discharge orifice to permit the passage of air between the reservoir and the working chamber. A check valve is mounted at the vent means to provide selective control of air through the air vents.

REFERENCES:
patent: 4610341 (1986-09-01), Hauser et al.
patent: 4924987 (1990-05-01), Kennedy

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