Fluted filter media with intermediate flow restriction and method of making same
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United States of America Patent
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N/A
Issued Date -
May 4, 2006
app pub date -
Nov 2, 2004
filing date -
Nov 2, 2004
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A fluted filter media includes a wall of porous filter material separating a first flute from one or more adjacent flutes, and an intermediate flow restriction disposed in the first flute between upstream and downstream ends of the filter media, so that fluid entering the first flute upstream of the intermediate flow restriction is urged to flow through the wall upstream of the intermediate flow restriction into one or more of the one or more adjacent flutes while flowing through the filter media. Where the adjacent flutes include flow restrictions disposed upstream and downstream from the intermediate flow restriction, the intermediate flow restriction urges fluid flowing through the first flute to pass through the wall at least twice between the upstream and downstream ends of the media. Filter apparatuses and methods incorporating such a fluted filter media having an intermediate flow restriction are also provided.
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