Multiple hydraulic spool valve assembly with a monolithic body

Details Multiple hydraulic spool valve assembly with a monolithic body Multiple hydraulic spool valve assembly with a monolithic body

2005-11-15

2005-11-15

Fox, John (Department: 3753)

Fluid handling

Systems

Supply and exhaust

C137S596130

Reexamination Certificate

active

06964281

ABSTRACT:
An assembly of a plurality of hydraulic control valves is housed in a single-piece body. For each control valve, a spool bore and an aperture for a pressure compensation valve are provided in the monolithic body. Each spool bore is connected to several return passages and a supply passage that extend through the monolithic body. A pair of workports also is connected to each spool bore. A relief valve return passage also extends through the monolithic body and where needed, apertures for pressure relief valves extend from a surface of the monolithic body intersecting the relief valve return passage and a given workport. A load sense passage and a second supply passage also are formed in the monolithic body.

REFERENCES:
patent: 3881512 (1975-05-01), Wilke
patent: 4430927 (1984-02-01), Turnbull
patent: 4736770 (1988-04-01), Rousset et al.
patent: 4782859 (1988-11-01), Constantinian
patent: 5586577 (1996-12-01), Cho
patent: 5725022 (1998-03-01), Taka et al.
patent: 5890362 (1999-04-01), Wilke
patent: 6505645 (2003-01-01), Pack et al.
patent: 2178139 (1987-02-01), None

Affiliated with

Also associated with

Rating

Multiple hydraulic spool valve assembly with a monolithic body does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Multiple hydraulic spool valve assembly with a monolithic body, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multiple hydraulic spool valve assembly with a monolithic body will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3507945