Fluid pressure responsive electrical switch

Details Fluid pressure responsive electrical switch Fluid pressure responsive electrical switch

1987-10-28

1988-12-27

Tolin, G. P.

Electricity: circuit makers and breakers

Fluid pressure

Diaphragm

200 83J, 200 83W, 337343, H01H 3534

Patent

active

047942142

ABSTRACT:
A fluid pressure switch is shown including first and second discs each having convex-concave surface configurations on opposite sides thereof adapted to invert its configuration upon being subjected to selected pressure levels. A slidably disposed plural stage pressure converter having a flexible membrane on one side thereof is operatively coupled to the discs to transfer force from fluid pressure received by the membrane. A motion transfer member extends from the second disc to an electric switch. At a first range of pressures the first disc prevents actuation of the switch, at a second range of pressures the curvature of the first disc has inverted allowing actuation of the switch while at a third range of pressures the curvature of the second disc has inverted resulting in deacuation of the switch.

REFERENCES:
patent: 4400601 (1983-08-01), Brucken
patent: 4581509 (1986-04-01), Sanford
patent: 4591677 (1986-05-01), Hirota

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