Gas pressure reduction valve

Details Gas pressure reduction valve Gas pressure reduction valve

2006-08-01

2006-08-01

Hepperle, Stephen M. (Department: 3753)

Fluid handling

Line condition change responsive valves

With separate connected fluid reactor surface

C137S505420

Reexamination Certificate

active

07082963

ABSTRACT:
A first retainer and a second retainer are provided between a diaphragm and an upper housing. A first spring urges the diaphragm downward between the first retainer and the diaphragm. A second spring having an outer diameter smaller than that of the first spring urges the diaphragm downward between the first retainer and the second retainer.

REFERENCES:
patent: 1548206 (1925-08-01), Pirtle
patent: 3072135 (1963-01-01), Moskow
patent: 3451421 (1969-06-01), Vicenzi et al.
patent: 3612618 (1971-10-01), Swanson
patent: 3643683 (1972-02-01), Semon
patent: 3960126 (1976-06-01), Shinoda
patent: 5372159 (1994-12-01), Ziegelmeyer et al.
patent: 11-082780 (1999-03-01), None
patent: 11-304029 (1999-11-01), None
patent: 2000-248999 (2000-09-01), None
Patent Abstracts of Japan for Publication No. 11-082780 published on Mar. 26, 1999 (1 page).
Patent Abstracts of Japan for Publication No. 11-304029 published on Nov. 5, 1999 (1 page).
Patent Abstracts of Japan for Publication No. 2000-248999 published on Sep. 12, 2000 (1 page).
Concise Statement of Relevancy Between The Invention and Materials (1 page).

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