Gathered filter media for an air filter and method of making same
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United States of America Patent
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Oct 25, 2011
Grant Date -
May 4, 2006
app pub date -
Nov 2, 2004
filing date -
Nov 2, 2004
priority date (Note) -
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Abstract
A filter media including a gathered sheet of porous filter material, is provided, together with an apparatus and method for fabricating such a gathered sheet of porous filter material. An improved filter apparatus incorporating such gathered porous filter material is also provided. By gathering the porous filter material, rather than forming convolutions through corrugating or pleating, as was done in the past, a desirable convoluted shape is achieved with little or no compression of the filter media.
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