Pressure switch

Details Pressure switch Pressure switch

1991-10-29

1993-06-01

Scott, J. R.

Electricity: circuit makers and breakers

Fluid pressure

Diaphragm

2003021, 200306, H01H 3540, H01H 904

Patent

active

052162133

ABSTRACT:
A pressure switch comprises a diaphragm held between and insulating cap and a conductive body to form an atmosphere chamber by the insulating cap and the diaphragm, and a pressure chamber by the conductive body and the diaphragm; a fixed contact provided on the insulating cap; a movable contact, provided on the diaphragm, for contacting/discontacting the fixed contact to detect a pressure, in the pressure chamber, reached to a predetermined value; communication device, provided with the insulating cap, for communicating the atmosphere chamber with the atmosphere; and water proof device for covering the communication device to prevent water form intruding into the atmosphere chamber.

REFERENCES:
patent: 4469922 (1984-09-01), Fukuda et al.
patent: 4524254 (1985-06-01), Yoshida et al.
patent: 4636598 (1987-01-01), Suzuki
patent: 4767898 (1988-08-01), Yasuda et al.

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