Pressure responsive switch with low pressure cutoff

Details Pressure responsive switch with low pressure cutoff Pressure responsive switch with low pressure cutoff

1978-06-19

1980-04-29

Tolin, Gerald P.

Electricity: circuit makers and breakers

Fluid pressure

Diaphragm

200 83Wm, H01H 3534

Patent

active

042007755

ABSTRACT:
A pressure responsive switch includes a diaphragm exposed to a pressure source and operating combination of levers to open and close a switch at predetermined pressure values. To prevent operation of a pump motor at abnormally low values, an element is provided between the diaphragm and the switch operating means to open the contacts.

REFERENCES:
patent: 3139493 (1964-06-01), Krieger, Sr. et al.
patent: 3875358 (1975-04-01), Willcox

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