Transmix prevention lock
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United States of America Patent
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Jan 12, 2010
Grant Date -
Nov 23, 2006
app pub date -
May 18, 2005
filing date -
May 18, 2005
priority date (Note) -
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Abstract
A method and apparatus for preventing a dense liquid such as diesel fuel from being dispensed into a storage tank that contains a less dense liquid, such as gasoline fuel and vice versa. The unloading process happens by gravity through a vertical down hole. The invention uses the gravitational flow of the fluid, a movable float that is moved by contact with a fluid of a predetermined density, and a magnetic member to activate the stopping feature.
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