Pressure medium control device for hydrostatic steering systems

Details Pressure medium control device for hydrostatic steering systems Pressure medium control device for hydrostatic steering systems

1978-11-02

1980-09-09

Christian, Leonard D.

Motors: expansible chamber type

With motive fluid valve

For double-acting motor

60384, F15B 1108

Patent

active

042211590

ABSTRACT:
A control valve assembly having relatively displaceable valve elements through which control passages establish fluid flow paths to a steering servomotor for supply of metered fluid to the pressurized side of the servomotor and exhaust of fluid from the contracting side to an internal low pressure space in the valve assembly. The control passages in the valve elements are protectively located between supply passages under full pump pressure to prevent loss of fluid as a result of leakage from the control passages.

REFERENCES:
patent: 3385057 (1968-05-01), Pruvot et al.
patent: 3528521 (1970-09-01), Ellis
patent: 4033377 (1977-07-01), Johnson
patent: 4174612 (1979-11-01), Liebert

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