Smoke and liquid alarm

Details Smoke and liquid alarm Smoke and liquid alarm

1988-07-05

1989-06-20

Crosland, Donnie L.

Communications: electrical

Condition responsive indicating system

With particular system function

340602, 340612, 340618, 340628, 340629, G08B 1900, G08B 1710

Patent

active

048412821

ABSTRACT:
A smoke and liquid level detector particularly useful for detecting sump pump failure. The detector comprises a sensor head containing two exposed electrodes in electrical contact with two leads which are connected to either side of the ionization chamber of a conventional, ionization-type smoke detector. The sensor head is disposed immediately above the normal water level within the sump well of a sump pump. In case of sump pump failure, the rising water level will immerse the sensor head, causing the electrical contact to be made between the two electrodes, thereby completing a circuit and causing an alarm signal to be sounded.

REFERENCES:
patent: 4228428 (1980-10-01), Niedermeyer
patent: 4258359 (1981-03-01), McLamb
patent: 4369438 (1983-01-01), Wilhelmi

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