Method and apparatus for automatically stopping the process of f

Fluent material handling – with receiver or receiver coacting mea – Automatic control of flow cutoff or diversion – Level or overflow responsive

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141 5, 141128, 141 83, 137393, B67D 500

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active

056495773

ABSTRACT:
The invention described in the patent comprises a method and an apparatus for automatically stopping the process of filling of a tank or container with a liquid, where the liquid must always be maintained under a gas or vapor pressure higher than atmospheric pressure. In the situations to which the invention is addressed, the tank is not to be filled completely with liquid. If the tank is correctly filled, there is at the end of the filling process a certain fraction of the total internal tank volume which is still occupied by gas or vapor. The invention provides for automatically stopping the fill at the correct point, through installation of one of several different devices within the tank, and through the operation of a microprocessor which receives signals from sensors located in the liquid supply system, upstream of the filling hose. In addition to automatically stopping the filling process at the correct point, the apparatus of the invention is self-monitoring and provides a warning of any malfunction, such as an overfilled tank.

REFERENCES:
patent: 3916961 (1975-11-01), Dilger
patent: 3929155 (1975-12-01), Garretson
patent: 4974645 (1990-12-01), Johnson
patent: 5131441 (1992-07-01), Simpson et al.
patent: 5172721 (1992-12-01), Sato et al.
patent: 5205330 (1993-04-01), Sekine
patent: 5381838 (1995-01-01), Watanabe et al.
patent: 5388622 (1995-02-01), Phillips

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