Collapsible water circulation system for enclosed tanks
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United States of America Patent
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Aug 6, 2013
Grant Date -
Sep 23, 2010
app pub date -
Mar 16, 2010
filing date -
Mar 17, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
A collapsible water circulation system for relatively small, enclosed tanks such as used by municipalities, fire districts, and industries. The system in its collapsed configuration is designed to fit through the often small access opening in the tank and then to automatically expand to its extended operating configuration, all without the need for any personnel to enter the tank. The system includes a draft tube extending downwardly from a distribution dish to an inlet anchored on the floor of the tank. The system also includes at least three, elongated flotation arms that can be deployed to extend substantially horizontally and outwardly of the dish. An impeller within the dish is operated to draw water up from the anchored inlet through the draft tube to the dish. The water subsequently passes upwardly through the dish over its upper lip and substantially radially outwardly of it. The flotation arms are pivotally mounted to the system above the dish and are free to pivot between their collapsed and predetermined deployed positions.
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