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Filter arrangement and methods

  • US 8,518,142 B2
  • Filed: 06/23/2010
  • Issued: 08/27/2013
  • Est. Priority Date: 06/24/2009
  • Status: Active Grant
First Claim
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1. A filter element comprising:

  • (a) a single seamless media pack;

    the media pack having first and second opposite ends and first and second lateral sides extending between the first and second ends;

    the media pack having pleats extending between the first and second ends;

    (i) the media pack having a first cross-section defined between the first and second lateral sides;

    (ii) the first cross-section having at least one outward projection that defines an internal radius of at least ¼

    inch;

    (A) the media pack being fanned around the internal radius, a plurality of the pleats extending around the internal radius in non-touching engagement with each other around the internal radius;

    (b) a first end cap secured to the first end of the media pack;

    (c) a second end cap secured to the second end of the media pack;

    (d) a frame member secured to the first end cap, second end cap, the first lateral side, and the second lateral side; and

    (e) a gasket held by the frame member;

    the gasket extending along the first end cap, second end cap, first lateral side, and second lateral side.

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