Vaned spool type directional control valve and four-way...

Details Vaned spool type directional control valve and four-way... Vaned spool type directional control valve and four-way...

2006-01-10

2006-01-10

Fox, John (Department: 3753)

Fluid handling

With casing, support, protector or static constructional...

Jacketed

C251S059000

Reexamination Certificate

active

06983760

ABSTRACT:
A vaned spool type directional control valve used to change a direction of motion of an actuator in an air pressure or oil hydraulic circuit includes a vaned spool having a valve portion and a vane portion integrally formed on a spool shaft. A chamber including a shaft support portion, a valve room, and a vane room is formed corresponding to the vaned spool. Main ports connected to the valve room in the chamber and two vane ports penetrating the opposed sides of the vane room are formed in the directional control valve. The directional control valve is of a pilot operated type so that flow of fluid in a main circuit can be changed by rotating the vane spool using the pressure of a pilot fluid.

REFERENCES:
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patent: 11-287535 (1999-10-01), None
patent: 11-325634 (1999-11-01), None

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