Liquid level alarm

Details Liquid level alarm Liquid level alarm

1989-03-15

1991-04-09

Crosland, Donnie L.

Communications: electrical

Condition responsive indicating system

Specific condition

340623, 340624, 116229, 200 84B, 73319, G08B 2100

Patent

active

050068342

ABSTRACT:
An apparatus for providing a signal to indicate liquid level above a pre-determined level in a container. The apparatus includes a device for defining a fixed reference level. An alarm unit having an alarm and an alarm actuator is connected to the defining device. A float is connected to the alarm unit and rests on the surface of the liquid. The float actuates the alarm actuator to activate the alarm when the surface of the liquid reaches the pre-determined level.

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patent: 4429422 (1984-02-01), Wareham
patent: 4563780 (1986-01-01), Pollack
patent: 4696428 (1987-09-01), Shakalis
patent: 4700884 (1987-10-01), Barrett et al.
patent: 4771272 (1988-09-01), Barnes

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