Vacuum valve-sensor device
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United States of America Patent
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-
Aug 18, 1987
Grant Date -
N/A
app pub date -
Oct 16, 1985
filing date -
Oct 29, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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