FILTER AND CENTER TUBE WITH HELICAL FIN
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United States of America Patent
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Issued Date -
Sep 6, 2012
app pub date -
Mar 4, 2011
filing date -
Mar 4, 2011
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
An apparatus and method for filtering a liquid utilize a filter apparatus including a center tube or flow balancing element including a helical fin. The helical fin radially contacts and supports the inner periphery of a filter media. The helical fin may be formed on a venturi center tube, or on a center tube flow balancing element for dividing the total flow of fluid through the filter apparatus into a bypass filter portion and a full-flow filter portion. The helical fin may alternately be formed on a standpipe center tube, defining a helical flow path between the inner periphery of a filter media and openings in the wall of the center tube.
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