Electrical transmission or interconnection systems – Switching systems – Condition responsive
Patent
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.
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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
Dwyer James L.
Hix L. T,.
Nartron Corporation
Romanski Lon H.
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