Filter and Filter Media Having Reduced Restriction
AssigneeCummins Filtration IP, Inc.
InventorsMark V. Holzmann, Arun Janakiraman, Orvin D. Kendall, Scott W. Schwartz, Eric A. Janikowski, Michael J. Connor
Life of this patent
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Abstract
A pleated filter media comprises a plurality of pleats comprised of pleat segments extending in an axial direction between first and second axial ends and extending in a transverse direction that is perpendicular to the axial direction between first and second sets of pleat tips at least partially defined by first and second sets of bend lines. Axial flow channels are defined between the pleat segments in the lateral direction and the plurality of pleats has a width in the transverse direction that varies along the axial direction.
Claims29
A pleated filter media extending in an axial direction, a transverse direction that is perpendicular to the axial direction, and a lateral direction that is perpendicular to the axial direction and perpendicular to the transverse direction, the pleated filter media comprising:
- a plurality of pleats comprised of pleat segments extending in the axial direction between first and second axial ends and extending in the transverse direction between first and second sets of pleat tips at least partially defined by first and second sets of bend lines;
- wherein axial flow channels are defined between the pleat segments in the lateral direction and wherein the plurality of pleats has a width in the transverse direction that varies along the axial direction.
A method of forming a filter media extending in an axial direction, a transverse direction that is perpendicular to the axial direction, and a lateral direction that is perpendicular to the axial direction and perpendicular to the transverse direction, the method comprising:
- folding a sheet of filter media to form a plurality of pleats comprised of pleat segments extending in the axial direction between first and second axial ends and extending in the transverse direction between first and second sets of pleat tips at least partially defined by first and second sets of bend lines;
- wherein axial flow channels are defined between the pleat segments in the lateral direction;
- and
- forming the plurality of pleats to have a width in the transverse direction that varies along the axial direction.
A filter for filtering fluid, the filter extending in an axial direction, a transverse direction that is perpendicular to the axial direction, and a lateral direction that is perpendicular to the axial direction and perpendicular to the transverse direction, the filter comprising:
- a housing retaining a pleated filter media;
- the pleated filter media comprising a plurality of pleats comprised of pleat segments extending in the axial direction between first and second axial ends and extending in the transverse direction between first and second sets of pleat tips at least partially defined by first and second sets of bend lines;
- wherein axial flow channels are defined between the pleat segments in the lateral direction and wherein the plurality of pleats has a width in the transverse direction that varies along the axial direction.
Dependencies are inferred from the claim text.