Directional-control valve

Details Directional-control valve Directional-control valve

2005-07-12

2005-07-12

Douglas, Steven O. (Department: 3751)

Valves and valve actuation

Electrically actuated valve

Balanced valve

C137S625160

Reexamination Certificate

active

06916003

ABSTRACT:
Disclosed is a directional control valve comprising a front-side connector and at least one radial connector, wherein the front faces of a valve body (valve shift or seat body) of the directional control valve are pressurized approximately equally, so that the actuating forces for shifting the valve body are minimal. In accordance with the invention, the pressure for pressurizing a rearward front face of the valve body is tapped at an axial distance to the valve body.

REFERENCES:
patent: 4413648 (1983-11-01), Walters et al.
patent: 5607137 (1997-03-01), Kanda et al.
patent: 5918635 (1999-07-01), Wang et al.
patent: 6065734 (2000-05-01), Tackett et al.
patent: 6854703 (2005-02-01), Parker et al.
patent: 3528781 (1987-02-01), None
patent: 4425843 (1996-01-01), None
patent: 19518333 (1996-11-01), None
patent: 4422742 (1997-02-01), None
patent: 19946996 (2000-05-01), None
patent: 19928748 (2000-09-01), None
patent: 0687843 (1995-12-01), None

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