Fluid handling – Line condition change responsive valves – Direct response valves
Patent
1985-10-16
1987-08-18
Rosenthal, Arnold
Fluid handling
Line condition change responsive valves
Direct response valves
137557, 137884, 137536, 417 44, 417187, F16K 2700, F16K 1502
Patent
active
046870210
ABSTRACT:
A vacuum valve-sensor device mounted on a vacuum source and maintaining the vacuum generated by the vacuum source to a required level. It includes a one-way valve which allows gas to flow towards the vacuum source but not away therefrom, and a pressure sensor on the side of the one-way valve remote from the vacuum source. The one-way valve includes a valve seat through which flow of gas is directed and a valve element biased toward seating on the valve seat from the side of the vacuum source. The pressure sensor may be located on the side of the valve seat remote from the valve element thereof, and may include a V-ring seal member fitted on the valve element.
REFERENCES:
patent: 2047654 (1936-07-01), Te Pas
patent: 2682886 (1954-07-01), Paxton
patent: 3435841 (1969-04-01), Williams et al.
patent: 3599639 (1971-08-01), Spotz
patent: 4432701 (1984-02-01), Ise
patent: 4549854 (1985-10-01), Yamamoto
Ise Yoji
Kanno Teruo
Yamaguchi Akira
Burns Robert E.
Lobato Emmanuel J.
Myotoku Ltd.
Rosenthal Arnold
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