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Fluid filter with canted fanfold pleats

  • US 20060254230A1
  • Filed: 05/01/2006
  • Published: 11/16/2006
  • Est. Priority Date: 05/12/2005
  • Status: Active Grant
First Claim
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1. A fanfold filter element comprising a plurality of canted pleats of a fluid filtering media, each pleat having opposite sidewalls on opposite sides of a fold forming a pocket of the pleat, and said plurality of pleats having alternating folds forming adjacent pockets with openings facing in opposite directions, said opposite sidewalls having different heights so that a central plane equidistant therebetween is canted at an angle substantially less than 90 degrees relative to a plane tangent to an outer surface of the folds of said pleats on one side of said filter element;

  • and securing means for securing said canted pleats together to maintain said cant angle, the cant angle of said canted filter element being sufficient to substantially increase a surface area of the filtering media as compared to a surface area of the same filtering media in a non-canted filter element having pleats formed with opposite sidewalls equidistant from a central plane that is at an angle of 90 degrees relative to said tangent plane, where the overall depths of said canted and non-canted filtering elements are substantially the same.

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