Hydraulic system

Details Hydraulic system Hydraulic system

2008-01-22

2008-01-22

Lazo, Thomas E. (Department: 3745)

Motors: expansible chamber type

With motive fluid valve

Contracting chamber exhaust valve controlled by expanding...

C091S468000

Reexamination Certificate

active

07320272

ABSTRACT:
The present application relates to a hydraulic system having a hydraulic supply, a consumer and having a control valve, which is in communication with the consumer by means of a first line and a second line, it being possible for the control valve to be switched into different positions, and the control valve connecting the hydraulic supply to the first line in at least one position. Furthermore, a first valve, which is in communication with the first line and the second line, is provided. Moreover, a third line, serving as a further return, which is in communication with the first valve and does not lead to or open out in the control valve, is also provided, the first valve being connected in such a manner that when pressure is applied to the first line it opens up a connection between the second and third lines.

REFERENCES:
patent: 3662551 (1972-05-01), Denker
patent: 4065010 (1977-12-01), Worback
patent: 4112822 (1978-09-01), Murata
patent: 5211196 (1993-05-01), Schwelm
patent: 5214997 (1993-06-01), Lebret
patent: 6095187 (2000-08-01), Hotchkiss
patent: 19734479 (1998-05-01), None
patent: 06307407 (1994-11-01), None
Will, et al.Pneumatics and Hydraulics. Berlin: VEB Verlag Technik, 1981. 175-185.

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