Bubble pump for dispensing particulate-ladened fluid
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United States of America Patent
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May 28, 2002
Issued Date -
N/A
app pub date -
Jan 24, 2001
filing date -
Aug 28, 1998
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A pump for dispensing particulate-ladened or heavily viscous fluids such as grit-ladened or granulated hand soap or lotion, has a compressible pump cavity with an inlet and a streamlined outlet, with a backflow check valve associated with the inlet and a nozzle assembly connected to the outlet. In the nozzle assembly, a spring loaded outflow ball valve resists outflow until sufficient fluid pressure is applied from the pump cavity. A minimally flow restrictive spring base support structure holds the base of the spring apart from the nozzle tip, creating a fluid flow path around the check ball and spring to the nozzle tip.
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