Fluid level alarm device

Details Fluid level alarm device Fluid level alarm device

1976-01-14

1977-04-26

Caldwell, John W.

Communications: electrical

Systems

Call station

200 84C, 340244A, G08B 2100

Patent

active

040204812

ABSTRACT:
A fluid level alarm device which is capable of warning a person of a shortage in level of an operating fluid stored in a fluid tank and in which the critical fluid level at which an alarm signal is produced is determined with a maximized accuracy by positioning a magnetically operable reed switch, electrically connected to an alarm, within the tank at a predetermined vertical location in a manner so that, when the fluid stored in the tank is lowered below a specified level, said reed switch is magnetically closed to operate the alarm.

REFERENCES:
patent: 3603926 (1971-09-01), Kimura
patent: 3654956 (1972-04-01), Tsubouchi
patent: 3826139 (1974-07-01), Bachman

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