US 12,233,369 B2
Air filter element having a circumferentially protruding clean air seal, filter housing and air filter
Pascal Neef, Trossingen (DE); Torsten Fritzsching, Vaihingen (DE); Philipp Hettkamp, Steinheim (DE); Arthur Sudermann, Steinheim (DE); Friedrich Kupfer, Marklkofen (DE); and Mario Rieger, Ludwigsburg (DE)
Assigned to MANN+HUMMEL GmbH, Ludwigsburg (DE)
Filed by MANN+HUMMEL GmbH, Ludwigsburg (DE)
Filed on Nov. 17, 2020, as Appl. No. 16/950,686.
Application 16/950,686 is a continuation of application No. PCT/EP2019/062265, filed on May 14, 2019.
Claims priority of application No. 102018004041.1 (DE), filed on May 18, 2018.
Prior Publication US 2021/0121807 A1, Apr. 29, 2021
Int. Cl. B01D 46/00 (2022.01); B01D 46/24 (2006.01); B01D 46/52 (2006.01); F02M 35/02 (2006.01); F02M 35/024 (2006.01)
CPC B01D 46/0005 (2013.01) [B01D 46/0004 (2013.01); B01D 46/0049 (2013.01); B01D 46/2414 (2013.01); B01D 46/521 (2013.01); B01D 46/522 (2013.01); F02M 35/0201 (2013.01); F02M 35/02416 (2013.01); F02M 35/02483 (2013.01); B01D 2265/021 (2013.01); B01D 2265/025 (2013.01); B01D 2265/026 (2013.01); B01D 2265/06 (2013.01); B01D 2271/027 (2013.01); B01D 2279/60 (2013.01); F02M 35/0245 (2013.01)] 22 Claims
OG exemplary drawing
 
1. An air filter element comprising:
a filter medium spaced radially away from and surrounding annularly a longitudinal axis of the air filter element;
wherein radial, as used herein, is a direction transverse to the longitudinal axis;
wherein axial, as used herein, is a direction defined by the longitudinal axis;
a first end disk at a first end face of the air filter element,
wherein the filter medium is embedded in the first end disk at the first end face;
a clean air seal configured to seal a raw side of an air filter against a clean side of the air filter;
wherein the clean air seal and the first end disk are embodied together as one piece;
wherein the clean air seal is embodied to continuously protrude radially outwardly beyond the filter medium;
the filter element further comprising:
a central opening formed in the first end disk and opening into an interior of the filter medium;
a bead arranged on the first end disk at an outer circumference of the central opening, the bead surrounding at least half of the outer circumference of the central opening, the bead projecting at the central opening in a direction axially outwardly away from the filter medium,
wherein the beast is a U-shaped bead having two free ends; and
wherein the U-shaped bead at each of the two free ends curves radially outwardly away from the longitudinal axis.