Check valve

Details Check valve Check valve

1978-01-20

1979-12-04

Rosenthal, Arnold

Fluid handling

Systems

Sequentially progressive opening or closing of plural valves

13763015, 251 38, F16K 31385

Patent

active

041766881

ABSTRACT:
A check valve with pilot actuation for hydraulic systems has a valve housing with a main bore and main seat, a main valve member movable in the main bore between a closed position and an open position and having an additional inner bore with a conical mouth at one end thereof, a pilot valve member movable between a closed position and an open position in said additional bore, and a push rod operative for moving the pilot valve member to the open position thereof. The push rod has a first thinner portion and the second thicker portion forming a shoulder. A conical transitional portion is formed between the above two portions and is complementary to the conical mouth of the bore of the main valve member. The push rod has pressure-relief clearances formed in the region of the transitional portion and the shoulder, and so located that when the transitional conical portion is seated on the conical mouth fluid in said additional bore can pass through the clearances.

REFERENCES:
patent: 3213887 (1965-10-01), Angelery
patent: 3447568 (1969-06-01), Burkart et al.
patent: 3667722 (1972-06-01), Katz et al.
patent: 3906991 (1975-09-01), Haussler

Affiliated with

Also associated with

Rating

Check 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 Check valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Check valve will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-86789