Communications: electrical – Condition responsive indicating system – Specific condition
Patent
1990-04-02
1991-01-29
Orsino, Joseph A.
Communications: electrical
Condition responsive indicating system
Specific condition
200 84R, 137558, 73307, 73319, 116110, 116228, G08B 2100
Patent
active
049889788
ABSTRACT:
A liquid level indicator for storage tanks including a cover member for covering an opening at the top of the storage tank, a central rod extending downwardly from the cover member into the storage tank, and a float movably disposed on the central rod. A vertically movable first rod assembly is connected to an upper portion of the central rod, and a vertically movable second rod assembly is connected to a lower portion of the central rod, with the float being disposed therebetween so that the float contacts and moves the first rod assembly when the storage tank is substantially filled, and the float contacts and moves the second rod assembly when the storage tank is near empty. Switches are associated with each of the first and second rod assemblies to activate signal members when either of the first and second rod assemblies are vertically moved to indicate when the storage tank is substantially filled or when the storage tank is near empty. Such signal members can include colored light bulbs, for example, a red light bulb to indicate that the storage tank is substantially filled, and a yellow light bulb to indicate the storage tank is near empty.
REFERENCES:
patent: 869907 (1907-11-01), Jarvis
patent: 1188822 (1916-06-01), Peters
patent: 1647806 (1927-11-01), McLain et al.
patent: 3359798 (1967-12-01), Katselis
patent: 3374326 (1968-03-01), Eisendrath
patent: 3412609 (1968-11-01), Kaletka et al.
patent: 4398186 (1983-08-01), Statz
patent: 4499615 (1985-02-01), Radovsky
Jackson Jill
Orsino Joseph A.
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