Non-overflow liquid delivery system
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United States of America Patent
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-
Mar 19, 2013
Grant Date -
Aug 12, 2010
app pub date -
Jan 28, 2010
filing date -
Jan 28, 2009
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A non-overflow liquid delivery system comprises a pumping apparatus having a liquid delivery pumping portion and a liquid recovery pumping portion fluidically isolated one from the other. A nozzle has a liquid delivery conduit and a liquid recovery conduit. A liquid delivery hose connects the liquid delivery pumping portion of the pumping apparatus in fluid communication with the liquid delivery conduit. A liquid recovery hose connects the liquid recovery pumping portion of the pumping apparatus in fluid communication with the liquid recovery conduit. A valve has a first movable valve portion for opening and closing the liquid delivery conduit. A manually operable valve control mechanism is connected to the valve for controlling the first movable valve portion, and has a liquid sensor responsive to a threshold condition of liquid in the liquid recovery conduit to thereby cause the first movable valve portion to close the liquid delivery conduit.
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