Vane pump having a pressure compensating valve

Details Vane pump having a pressure compensating valve Vane pump having a pressure compensating valve

2006-08-22

2006-08-22

Koczo, Jr., Michael (Department: 3746)

Rotary expansible chamber devices

Grooved abutting cylinder-rotating member end surfaces

Groove communicates with vane slot

C418S268000

Reexamination Certificate

active

07094044

ABSTRACT:
An apparatus (10) comprises a pump (12) and a pressure compensating valve (94). The pump (12) includes a member (22) having a surface (24) defining a pumping chamber. A rotatable rotor (30) is located in the pumping chamber. The rotor (30) has circumferentially spaced vane-like members (42) defining pumping pockets (48) that expand and contract during rotation of the rotor (30). The pump (12) has a fluid circuit (72) providing fluid pressure for biasing the vane-like members (42) of the rotor (30) radially toward the surface (24). The pressure compensating valve (94) controls fluid flow through an outlet (16) and also controls the pressure in the fluid circuit (72). The pressure compensating valve (94) has an initial condition blocking fluid flow through the outlet (16) at pump start-up to provide fluid pressure in the fluid circuit (72) to bias the vane-like members (42) of the rotor (30) radially toward the surface (24).

REFERENCES:
patent: 3253548 (1966-05-01), Zeigler et al.
patent: 3828569 (1974-08-01), Weisgerber
patent: 4604041 (1986-08-01), Hertell et al.
patent: 4936761 (1990-06-01), Hasegaki et al.
patent: 4986741 (1991-01-01), Nakajima et al.
patent: 6015278 (2000-01-01), Key et al.
patent: 29 07 058 (1979-09-01), None
patent: 41 10 392 (1991-10-01), None
patent: 195 06 532 (1995-08-01), None
patent: 195 29 807 (1997-02-01), None

Affiliated with

Also associated with

Rating

Vane pump having a pressure compensating valve does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Vane pump having a pressure compensating valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Vane pump having a pressure compensating valve will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3627495