Patent ID: 6099729
Filing Date: 2000-08-08
Classification: B01D

Abstract:
A filter element, comprising:cylindrical filter media circumscribing a central axis and having longitudinally-extending pleats extending from one end of the filter media to another end of the filter media, said pleats having radially-inner pleat peaks, radially-outer pleat peaks, and opposing sidewalls extending between respective inner and outer pleat peaks which define outwardly-opening pleat cavities around the filter element, a radially-inner surface of the inner pleat peaks bounding a central, longitudinally-extending imaginary cylindrical cavity within the filter media,an inner cylindrical support wrap formed from a layer of porous, fibrous filter media disposed within the central cavity and having a radially outer surface adhesively joined to the radially-inner surface of the inner pleat peaks, andan end cap with an annular cap portion bonded to each end of the filter media, at least one of said end caps having a central circular opening enabling a rigid support core to be inserted into and removed from the cylindrical cavity of the filter media, said central circular opening of said at least one end cap having an inner diameter that is substantially equal to an inner diameter of the support wrap.