Pressure medium controller for motor vehicle steering systems

Details Pressure medium controller for motor vehicle steering systems Pressure medium controller for motor vehicle steering systems

1978-11-15

1980-12-09

Christian, Leonard D.

Motors: expansible chamber type

With motive fluid valve

For double-acting motor

91391, F15B 1108, F15B 1304

Patent

active

042377730

ABSTRACT:
Relatively dispaceable valve elements of a pressure controller for a vehicle steering system provided with radial bore type valve passages having two different flow area dimensions to regulate the pressure of fluid supplied to a servomotor in response to displacement of the valve elements to an operating position from a neutral position in which the valve passages establish a short circuit flow path between the pressure source and a low pressure outlet. Flow through the short circuit passages in the valve elements are blocked in sequence during displacement of the valve elements to the operating position by sequential closing of flow passages in one of the valve elements.

REFERENCES:
patent: Re25126 (1962-02-01), Charlson
patent: 2984215 (1961-05-01), Charlson
patent: 3385057 (1968-05-01), Pruvot et al.
patent: 3528521 (1970-09-01), Ellis
patent: 4109679 (1978-08-01), Johnson
patent: 4174612 (1979-11-01), Liebert

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