Patent ID: 9205360
Filing Date: 2015-12-08
Classification: B01D,Y10T

Abstract:
1. An air filter element for a detachable installation into a housing with a detachable housing cover, the air filter element comprising: an airflow permeable tubular support structure having an axially elongated tubular outer wall circumferentially surrounding and defining an axially extending hollow interior, the tubular outer wall having an open grid structure, the open grid structure having a plurality of fluid flow openings extending radially through the tubular support structure from a radially outer surface of the tubular support structure into the axially extending hollow interior; a filter medium disposed on and extending circumferentially about said radially outer surface of said tubular support structure and having a first axial end face and an opposing second axial end face; wherein the tubular support structure is arranged within an interior of the filter medium and extends between the first axial end and the second axial end within the interior of the filter medium; wherein the tubular support structure extends axially from the first axial end to the second axial end of the filter medium within the interior of the filter medium; wherein the tubular support structure at its first axial end face extends across the hollow interior of the tubular support structure and having a recessed portion extending inwardly from the first axial end face into the interior of the filter medium, wherein the recessed portion is a coupling section; wherein said coupling section engages with a compressibly springy clamping device clamping the air filter element into a direction of a longitudinal axis of the tubular support structure between a housing body and the a housing cover; wherein the coupling section comprises wherein the coupling section features as fixing elements projections between adjacent ones of which one leaf spring each of the clamping device can be accommodated which has at least two pair-wise opposing leaf springs which are disposed at and secured to an outer circumference of a disk.