Anti-saturation directional control valve composed of two or...

Details Anti-saturation directional control valve composed of two or... Anti-saturation directional control valve composed of two or...

2007-02-27

2007-02-27

Keasel, Eric (Department: 3753)

Fluid handling

Systems

Supply and exhaust

C137S625390, C091S446000

Reexamination Certificate

active

10919346

ABSTRACT:
The invention relates to the field of hydraulic directional control valves and refers to an anti-saturation directional control valve (V) composed of two or more sections in each of whom there is a pressure selector compensator with a six-way two-position spool (4) of the proportional type and a compensator (3) performing the function of pressure compensator. The pressure compensator (3) comprises therein a pressure signal selector (S), that is mechanically kept open or not by a piston (5) with a spring (M), of a negligible force, depending on workport pressures. The piston (5) presses against the pressure compensator (3) in the section (E) of the directional control valve (V) that is at a higher pressure, in this case operating as check valve, while in the sections at lower pressure the piston (5) is kept detached from the pressure compensator (3) so that this latter one performs its function of pressure compensator and the inner signal selector (S) by means of the sphere action.

REFERENCES:
patent: 5138837 (1992-08-01), Obertrifter et al.
patent: 5415199 (1995-05-01), Claudinon et al.
patent: 5715862 (1998-02-01), Palmer
patent: 5715865 (1998-02-01), Wilke
patent: 5806312 (1998-09-01), Kauss et al.
patent: 5857488 (1999-01-01), Kobelt
patent: 5890362 (1999-04-01), Wilke
patent: 6192928 (2001-02-01), Knoell et al.
patent: 6532989 (2003-03-01), Kauss
patent: 2004/0040294 (2004-03-01), Sagawa et al.
patent: 42 34 037 (1994-04-01), None

Affiliated with

Also associated with

Rating

Anti-saturation directional control valve composed of two or... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Anti-saturation directional control valve composed of two or..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Anti-saturation directional control valve composed of two or... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3884836