Hydraulic valve system

Details Hydraulic valve system Hydraulic valve system

2005-02-15

2005-02-15

Lazo, Thomas E. (Department: 3745)

Power plants

Pressure fluid source and motor

Having condition responsive control in a system of distinct...

C060S426000, C091S446000

Reexamination Certificate

active

06854270

ABSTRACT:
A hydraulic valve system (1) has a supply connection arrangement having a high-pressure connection (P) and a low-pressure connection (T), a working connection arrangement, having two working connections (A, B) connectable with a motor (2), with a directional valve (4), which is arranged between the supply connection arrangement (P, T) and the working connection arrangement (A, B), and with a compensation valve (8), which is acted upon in a first operation direction by a spring (22) and a pressure in a pressure chamber (23), which is connected with a load-sensing line (LS), and in a second operation direction, which is opposite to the first operation direction, by a pressure at the directional valve (4).

REFERENCES:
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patent: 4787294 (1988-11-01), Bowden
patent: 5138837 (1992-08-01), Obertrifter et al.
patent: 5315826 (1994-05-01), Hirata et al.
patent: 5715865 (1998-02-01), Wilke
patent: 6082106 (2000-07-01), Hamamoto
patent: 6267141 (2001-07-01), Rivolier
patent: 6318079 (2001-11-01), Barber
patent: 19640103 (1998-04-01), None
patent: 19919015 (2001-01-01), None
patent: 10033757 (2002-01-01), None
patent: 0877975 (1998-11-01), None

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