Hydraulic port control apparatus, e.g. for motor vehicle servo s

Details Hydraulic port control apparatus, e.g. for motor vehicle servo s Hydraulic port control apparatus, e.g. for motor vehicle servo s

1977-12-29

1979-03-13

Cohan, Alan

Fluid handling

Systems

Multi-way valve unit

13762543, F16K 1106

Patent

active

041436768

ABSTRACT:
The invention concerns hydraulic control valves suitable for e.g. motor vehicle steering gear. A variety of control port configurations are formed between cooperating ribs and bores on the control piston -- which may be rotary or axially displaceable -- and on the control sleeve. In each case the resulting control ports are defined by circular arcs having a common chord arranged at right angles to the direction of the control displacement for example at right angles to the direction of the control displacement for example at right angles to the direction of rotation of a steering spindle.

REFERENCES:
patent: 3291002 (1966-12-01), Folkerts
patent: 3773081 (1973-11-01), Venable

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