Pressure switch actuator

Details Pressure switch actuator Pressure switch actuator

1977-04-12

1978-11-07

Tolin, Gerald P.

Electricity: circuit makers and breakers

Fluid pressure

Flow-responsive type

200 83Z, 241 325, H01H 3530

Patent

active

041247892

ABSTRACT:
A motor control circuit for the comminuter motor of a waste disposal unit, incorporating an air sack around the inlet to the waste disposal unit, and a pressure responsive electrical switch, the motor being de-energized in absence of a pressure signal from the sack caused by the insertion of a safety guard in the inlet.

REFERENCES:
patent: 2657397 (1953-11-01), Drew
patent: 2979274 (1961-04-01), Tull
patent: 3219778 (1965-11-01), Treffeisen
patent: 3425637 (1969-02-01), Enright
patent: 3900710 (1975-08-01), Potter

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