B - Operations – Transporting – 67 – D
Patent
B - Operations, Transporting
67
D
B67D 7/16 (2010.01) B65D 90/48 (2006.01)
Patent
CA 2167095
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 vapour pressure which is typically different from 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 vapour. The invention provides for automatically stopping the fill at the correct point, through installation of one of several different devices within the tank, which create additional backpressure on the filling hose when the tank has become correctly filled, and through the operation of a microprocessor which receives signals from sensors located upstream of said filling hose, indicating that said increase in backpressure has occurred. In addition to automatically stopping the filling process at the correct point, the apparatus of the invention is fail-safe and self-monitoring and provides an immediate warning of any malfunction, such as an overfilled tank.
Farkas Edward Joel
Na
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