Automatic overfill prevention system

Details Automatic overfill prevention system Automatic overfill prevention system

1987-05-15

1988-09-13

Thronson, Mark J.

Receptacles

Container attachment or adjunct

Filling member

141 1, 141 86, B65B 306

Patent

active

047703172

ABSTRACT:
An automatic overfill prevention system for gravity filling of an underground liquid storage tank from a tank truck fill line provides a venturi in the fill line creating a partial vacuum which is vented from the liquid storage tank through a vent line until the liquid in the storage tank rises to a predetermined level to submerge one end of the vent line and trigger a latching means to close the fill line. The assembly also includes a containment manhole to hold any inadvertent spillage occurring during the filling process.

REFERENCES:
patent: 1212102 (1917-01-01), Pipe
patent: 2351775 (1944-06-01), McMurry
patent: 4040455 (1977-08-01), Swain et al.
patent: 4278115 (1981-07-01), Briles et al.
patent: 4593714 (1986-06-01), Madden
patent: 4615362 (1986-10-01), Hartman et al.
patent: 4659251 (1987-04-01), Petter et al.
patent: 4696330 (1987-09-01), Raudman et al.

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