Directional control valve device and fluid pressure cylinder...

Details Directional control valve device and fluid pressure cylinder... Directional control valve device and fluid pressure cylinder...

2007-08-21

2010-06-22

Leslie, Michael (Department: 3745)

Motors: expansible chamber type

Fluid supply through diverse paths to single expansible chamber

Activation of one path disables second path

C060S473000, C137S112000

Reexamination Certificate

active

07739940

ABSTRACT:
In a directional control valve device, a first passage connects a second port with a first port by using a part of a movement path of a moving valve element when the moving valve element is in a position of a first end. A second passage connects the second port with the third port by using an internal passage of the moving valve element when the moving valve element is in a second end. The moving valve element is provided with a first check valve for permitting a flow in the internal passage only in the direction from the third port to the second port. When a fluid pressure is applied to the third port, the fluid pressure presses the moving valve element toward the second end so that the first passage is closed, and the first check valve is opened to open the second passage.

REFERENCES:
patent: 3570521 (1971-03-01), Kirschenman
patent: 4674526 (1987-06-01), Athanassiu
patent: 4779836 (1988-10-01), Marklund
patent: 4833971 (1989-05-01), Kubik
patent: 5048292 (1991-09-01), Kubik
patent: 5522212 (1996-06-01), Kubik
patent: 5542417 (1996-08-01), Ottestad
patent: 6691510 (2004-02-01), Kariya et al.
patent: 34-10389 (1959-04-01), None
patent: 62-502982 (1987-11-01), None
patent: 63-4401 (1988-01-01), None
patent: 2001-330005 (2001-11-01), None
patent: 2002-147404 (2002-05-01), None

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