Domestic sewer alarm

Details Domestic sewer alarm Domestic sewer alarm

1989-01-11

1990-10-02

Orsino, Joseph A.

Communications: electrical

Condition responsive indicating system

Specific condition

340620, 340625, 340608, G08B 2100

Patent

active

049610686

ABSTRACT:
A pair of float operated sensors simultaneously detect inflow into the housing of an alarm assembly to actuate a buzzer and a lamp providing an early warning back-up alarm. One of the sensors remains actuated by the holding action of a magnet to continue operation signifying back-up recession. Under selective control, the buzzer is operated in by-pass relation to the sensors to indicate a low voltage condition of the battery powering the alarm assembly.

REFERENCES:
patent: 2761037 (1956-08-01), Thomas
patent: 3202165 (1965-08-01), Yanicoli
patent: 3757316 (1973-09-01), Fiorenzo
patent: 3774187 (1973-11-01), Windham
patent: 3834415 (1974-09-01), Herron
patent: 3978462 (1976-08-01), Goodman
patent: 4091365 (1978-05-01), Allen
patent: 4392128 (1983-07-01), Young
patent: 4398186 (1983-08-01), Statz
patent: 4546346 (1985-08-01), Wave

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