Variable flow screen nozzle
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United States of America Patent
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Nov 4, 2014
Issued Date -
N/A
app pub date -
Jul 13, 2011
filing date -
Aug 11, 2010
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Abstract
A variable flow control nozzle has a head, a tube, and a valve. The head disposes adjacent an opening and has a screen for passage of fluid flow into and out of the head's interior. The tube extends from the head through the opening and secures the head thereto. A tube passage communicates the interior of the head with the other side of the opening. The valve disposed in the passage has a first condition permitting first fluid flow from the passage to the interior of the head and has a second condition permitting second fluid flow from the interior to the passage. The second fluid flow may be greater than the first fluid flow. The tube can have first and second tube members with different internal diameters, and the valve can use a ball movable between positions in the tube members.
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