Gas pressure driven fluid pump having compression spring pivot mechanism and damping system
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United States of America Patent
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May 23, 2006
Grant Date -
Aug 5, 2004
app pub date -
Dec 5, 2003
filing date -
Dec 13, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
A gas pressure driven fluid pump having a pump tank with a liquid inlet and a liquid outlet. A float assembly is carried within the interior of the pump tank and is movable between a low level position and a high level position. A compression spring is connected between the float assembly and a pivot member. Due to the force applied by the compression spring, the pivot member rotates to a first position when the float reaches its high level position and rotates to a second position when the float reaches its low level position. A valve assembly is connected to said pivot member to switch between motive porting and exhaust porting in a snap over fashion due to rotation of said pivot member between said first position and said second position. A damper system may be connected to the valve assembly to slow movement of the valve assembly between motive porting and exhaust porting.
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