Patent ID: 9415337
Filing Date: 2016-08-16
CPC Classification: B01D

Claim Text:
1. An air filter element comprising: a filter medium including: a support structure arranged on and affixed onto at least one lateral side of the filter medium and extending between the upstream surface to the downstream surface; wherein the filter medium extends between the upstream surface and the downstream surface; the filter medium is laterally fastened to the support structure between the upstream surface and downstream surface; wherein the support structure has a support structure depth in the flow direction that varies across the support structure along an upstream edge or a downstream edge of the support structure, the support structure depth defined as a varying distance from the upstream edge to the downstream edge; wherein in a plane in which the support structure extends, the support structure has a recessed offset in the form of an indentation or cutout which opens completely through the support structure from an exterior side to an interior side of the support structure, the indentation or cutout starting at the upstream edge or the downstream edge and continuing in the axial direction into an interior region of the support structure.