Plunger type fluid pressure switch

Details Plunger type fluid pressure switch Plunger type fluid pressure switch

1987-12-22

1989-07-04

Tolin, Gerald P.

Electricity: circuit makers and breakers

Fluid pressure

Flow-responsive type

92101, 73723, 200 83J, H01H 3534

Patent

active

048453226

ABSTRACT:
A pressure receiving member which has a diaphragm held in a pressure receiving case is manufactured independently of a main sensor body member, which has a switch accommodated in a switch case. The pressure receiving member and the main sensor body member are then assembled to provide a pressure sensor.
According to the present invention, since the pressure receiving portion and the main sensor body are manufactured individually, a diaphragm inversion movement test can be carried out individually of the testing of switch turning on and off, and hence only satisfactory pressure receiving portion and main sensor body which passed the respective tests will be utilized in the operation of assembling pressure sensors.

REFERENCES:
patent: 3444341 (1969-05-01), Mighton
patent: 3963889 (1976-06-01), Stonich
patent: 4195209 (1980-03-01), Mlyniec
patent: 4458117 (1984-07-01), Johnson
patent: 4464551 (1984-08-01), Johnson
patent: 4573398 (1986-03-01), Johnson
patent: 4638721 (1987-01-01), Boulanger
patent: 4644116 (1987-02-01), Miyakawa

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