Moisture draining inside-out reverse flow air filter, mold and method
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United States of America Patent
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-
Mar 25, 2003
Grant Date -
Nov 7, 2002
app pub date -
May 4, 2001
filing date -
May 4, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
An inside-out reverse flow air filter element (20) has a resiliendtly compressible molded lower end cap (48) having molded drainage surfaces including a molded raised central dome (72) shedding moisture radially outwardly and downwardly, a plurality of molded drainage holes (70, 74, 76, 78) spaced radially outwardly of and below the top of the central dome, and a plurality of radial segments (98, 100, 102, 104, 110, 112, 114, 116), an annular trough (80) and tapered slope surfaces (82, 84) providing desired drainage. A mold (130) has a plurality of upstanding segments (136, 138, 140, 142) having posts (144) and ramps (146) forming the drainage structure, and locator faces (152) engaging, guiding and locating the annular filter media (34) in the mold.
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