Liquid level sensor, pump system means and circuit means

Details Liquid level sensor, pump system means and circuit means Liquid level sensor, pump system means and circuit means

1977-12-16

1980-05-27

Hix, L. T.

Electrical transmission or interconnection systems

Switching systems

Condition responsive

340620, 324 65P, H01H 3518

Patent

active

042052378

ABSTRACT:
A plurality of probes are situated as to experience being touched by liquid which is being monitored; when both of such probes are touched by the liquid, related electrical circuit means becomes energized as to cause related pumping means to be activated thereby pumping some of the monitored liquid to, in turn, reduce the level of such monitored liquid; when the level of the monitored liquid decreases to a predetermined level, the pumping means is automatically de-activated; during periods wherein there might occur a momentary splashing or sloshing of the monitored liquid, time delay means serves to delay activation of said pumping means thereby preventing unnecessary activation of the pumping means.

REFERENCES:
patent: 2437134 (1948-03-01), Smith
patent: 3030890 (1962-04-01), Galik
patent: 3477460 (1969-11-01), Dotto
patent: 3602251 (1971-08-01), Hill
patent: 3626400 (1971-12-01), Bates
patent: 3772531 (1973-11-01), Webb
patent: 3777177 (1973-12-01), Norkum
patent: 4087706 (1978-02-01), Koester

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