Filter element
AssigneeMann+Hummel GmbH
InventorsKlaus-Dieter Ruhland, Edvard Kopec
Life of this patent
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Abstract
A filter element, particularly a secondary element for a filter system in the intake tract of an internal combustion engine, which filter element includes a zig-zag pleated filter medium surrounded by a circumferential frame of polyurethane foam. The frame has a substantially oval contour and is insertable into an oval opening. To reproduce the oval contour, the plate-like medium has beveled lateral regions, such that a maximum effective filter surface is obtained with a minimum amount of waste. A circumferential groove or a circumferential web is provided in the frame to seal the polyurethane foam frame to the opening.
Claims8
A filter element comprising a flat body of pleated filter medium surrounded by a circumferential frame of polyurethane foam, wherein the frame has a substantially oval contour and is insertable into an oval opening;
- the body of pleated filter medium has lateral regions beveled to match the oval contour, such that a maximum effective filter surface is obtainable with a minimum amount of waste, and a circumferential groove or a circumferential web is provided in the frame to seal the foam frame to the oval opening when the frame is inserted in the opening.
Dependencies are inferred from the claim text.