Control system

Fluid handling – Self-proportioning or correlating systems – Self-controlled branched flow systems

Reexamination Certificate

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Details

C137S625480, C137S625690

Reexamination Certificate

active

07117881

ABSTRACT:
The invention relates to a control system, especially a hydraulic control system for a transmission, including a valve assembly, especially a directional valve assembly, designed for controlling a cooling system for a clutch and for ensuring a minimum level of pressure and suctioning function of a pump.

REFERENCES:
patent: 3592281 (1971-07-01), Utter et al.
patent: 3800670 (1974-04-01), Hufeld et al.
patent: 4458720 (1984-07-01), Gierer
patent: 4718308 (1988-01-01), Haley
patent: 5314385 (1994-05-01), Haley et al.
patent: 5417622 (1995-05-01), Asayama et al.
patent: 5937645 (1999-08-01), Hamamoto
patent: 100 36 256 (2001-03-01), None

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