Method and apparatus for winding a filter media pack
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United States of America Patent
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Mar 22, 2011
Grant Date -
Jan 17, 2008
app pub date -
Jul 9, 2007
filing date -
Nov 3, 2004
priority date (Note) -
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status (Latency Note)
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Abstract
A method and apparatus are provided, for forming a filter element including a media pack in the form of a coiled fluted filter media, by winding the web of fluted filter media around a pair of tools of a mandrel. The tools engage the sides of the filter media. The tools define a major to provide the media pack with a oblong or elongated shape. The web may be fed at constant linear speed, and/or a motor may be controlled in a manner to provide constant driving torque to maintain a constant tension on the web. The winding apparatus and methods may include apparatus or methods to modify the feed path of the web to adjust the tension of the web as it is being wound. Further, the coiled media packs can be fixtured to prevent relaxation. A method may form various shaped media packs with the same apparatus.
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