Diaphragm apparatus having a magnetically imparted hysteresis ch

Details Diaphragm apparatus having a magnetically imparted hysteresis ch Diaphragm apparatus having a magnetically imparted hysteresis ch

1983-09-21

1985-06-04

Pellinen, A. D.

Electricity: circuit makers and breakers

Fluid pressure

Diaphragm

200 83L, 200 83N, H01H 3540

Patent

active

045216517

ABSTRACT:
In a diaphragm apparatus, such as a switch having a diaphragm to be driven by a pressure difference between two spaces, an iron disk is fixed to the center of the diaphragm and a ring-shaped permanent magnet is fixed to an inside wall of a case to magnetically attract the iron disk. This provides hysteresis in the force-motion characteristic of the diaphragm to reduce hunting.

REFERENCES:
patent: 2628296 (1953-02-01), Dillman
patent: 3681721 (1972-08-01), Wessel et al.

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