Differential pressure responsive switch

Details Differential pressure responsive switch Differential pressure responsive switch

1986-04-21

1987-09-08

Tolin, G. P.

Electricity: circuit makers and breakers

Fluid pressure

With plural operators

200 83Y, 200 83Q, 137 82, 91 47, H01H 3532

Patent

active

046925740

ABSTRACT:
A differential pressure responsive switch utilizes an operating diaphragm which has a position controlled by a pressure being monitored with the diaphragm acting through a transmission member upon an electrical switch and includes a first chamber divided by a control diaphragm and having an inlet for the pressure to be monitored to one side of the control diaphragm while the other side of the control diaphragm carries a closure member for an adjacent bleed valve seat. An inlet for the bleed valve is connected via a throttle to a source of a pressurized gas and to a second chamber defined by the operating diaphragm and a spring is engaged through the transmission member to urge the operating diaphragm against the pressure in the second chamber.

REFERENCES:
patent: 3277441 (1966-10-01), Gutjahr
patent: 3681546 (1972-08-01), Coin
patent: 3852547 (1974-12-01), Dietz
patent: 4217471 (1980-08-01), Ulbing
patent: 4330695 (1982-05-01), Poling

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