Quick closing shut-off valve

Details Quick closing shut-off valve Quick closing shut-off valve

2006-04-11

2006-04-11

Krishnamurthy, Ramesh (Department: 3753)

Fluid handling

Line condition change responsive valves

Pilot or servo controlled

C137S115130, C137S461000, C137S613000, C251S063000

Reexamination Certificate

active

07025083

ABSTRACT:
A quick closing shut-off valve includes an inlet, an outlet and a passage there between. A closing element blocks the passage when in the closed position. The closing element is interconnected to a piston via a pull rod. The piston is positioned within a working chamber that communicates with the valve outlet. A safety valve also communicates with the working chamber and is positioned above the piston. As a result, when the pressure within the tank, and thus in the working chamber, reaches a maximum permissible pressure, the safety valve opens and the pressure above the piston decreases. The piston rises as a result and pulls the closing element via the pull rod into the closed position so that the valve is closed.

REFERENCES:
patent: 333403 (1885-12-01), Fitts
patent: 615812 (1898-12-01), Dallett
patent: 618903 (1899-02-01), Prince
patent: 784961 (1905-03-01), Parsons
patent: 871260 (1907-11-01), Dyer
patent: 1288578 (1918-12-01), Hatfield et al.
patent: 1628698 (1927-05-01), Walker
patent: 2928410 (1960-03-01), Del Vecchio
patent: 3774628 (1973-11-01), Norton et al.
patent: 3776251 (1973-12-01), Trubman
patent: 3904175 (1975-09-01), Deschenes
patent: 4171004 (1979-10-01), Cerrato et al.
patent: 4171708 (1979-10-01), Pareja
patent: 4244388 (1981-01-01), Feiss
patent: 5398719 (1995-03-01), Drossel et al.
patent: 6382235 (2002-05-01), Drube et al.
patent: 25 50 558 (1977-05-01), None
patent: 100 11 674 (2001-06-01), None
patent: 2 355 510 (2001-04-01), None

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3564979