Membrane valve and second stage pressure reducer for...

Details Membrane valve and second stage pressure reducer for... Membrane valve and second stage pressure reducer for...

2007-08-07

2007-08-07

Rivell, John (Department: 3753)

Fluid handling

Line condition change responsive valves

Direct response valves

C137S852000, C128S205240, C128S207120

Reexamination Certificate

active

10770090

ABSTRACT:
A membrane valve wherein the shutter disk is retained in contact with the valve seat during ejection of liquid or gas by means of one or more ribs that are substantially in contact with the shutter disk along one or more lines secant to the shutter disk and/or by means of one or more rows of secondary clamping pins that are engaged in matching openings on the valve seat. Further, a second stage pressure reducer for two-stage underwater regulators incorporating a membrane valve wherein the shutter disk is retained in contact with the valve seat during exhalation of gas by means of one or more ribs that are substantially in contact with the shutter disk along one or more lines secant to the shutter disk and/or by means of one or more rows of secondary clamping pins that are engaged in matching openings on the valve seat.

REFERENCES:
patent: 1867478 (1932-07-01), Stelzner
patent: 2225395 (1940-12-01), Young
patent: 2291603 (1942-08-01), Barker
patent: 2326651 (1943-08-01), Husted
patent: 2693180 (1954-11-01), Galeazzi
patent: 4219017 (1980-08-01), Shamlian et al.
patent: 4414973 (1983-11-01), Matheson et al.
patent: 4729401 (1988-03-01), Raines
patent: 4838262 (1989-06-01), Katz
patent: 6412514 (2002-07-01), Raftis
patent: 1351384 (1974-04-01), None

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