Diaphragm pressure switch for controlling small pressure gradien

Electricity: circuit makers and breakers – Fluid pressure – Diaphragm

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Details

200 83N, 200 83S, H01H 3540

Patent

active

045323909

ABSTRACT:
A pressure switch for detecting and controlling small pressure gradients in fluid circulation systems includes a containing body having first and second channels formed therein, and an elastically deformable diaphragm. The diaphragm is supported at its edges by the body and separates the first and second channels from each other. A small disc formed of an electrically conductive material cooperatingly engages a portion of one of the faces of the diaphragm. Electrical contacts are supported by the body and disposed adjacent the small disc. The diaphragm is provided with a working portion that is disposed outwardly from the periphery of the small disc and is relatively thin. The pressure switch further includes an annular supporting plug projecting from the containing body and engaging the diaphragm close to the edge of the disc.

REFERENCES:
patent: 1840340 (1932-01-01), White
patent: 2039717 (1936-05-01), Hueber et al.
patent: 2813945 (1957-11-01), Courtot
patent: 3005067 (1961-10-01), Leibold et al.
patent: 4104495 (1978-08-01), Jones et al.
patent: 4307272 (1981-12-01), Dvorachek

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