The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 24, 2024
Filed:
May. 17, 2022
Mann+hummel Gmbh, Ludwigsburg, DE;
Matthias Krohlow, Herrenberg, DE;
Daniel Schmid, Sachsenheim, DE;
Martin Sonntag, Freiberg, DE;
Steffen Pfannkuch, Ludwigsburg, DE;
Martin Schmid, Reisbach, DE;
Christoph Wittmers, Bietigheim-Bissingen, DE;
Robert Hasenfratz, Schwaebisch Hall, DE;
MANN+HUMMEL GmbH, Ludwigsburg, DE;
Abstract
An air filter has a filter housing having a raw air inlet and further has a filter element arranged in the filter housing. The filter element has a filter medium body and an end disk with a central primary air passage and a secondary air passage. The filter medium body annularly surrounds a longitudinal axis of the filter element and separates a raw side in the filter housing from a clean side inside the filter element. The filter housing has a primary air outlet communicating through the primary air passage with the clean side of the filter element. The filter housing has a secondary air outlet communicating through the secondary air passage with the clean side of the filter element. The secondary air outlet communicates with the secondary air passage through a channel arranged at the filter element, wherein the channel surrounds the primary air passage annularly and coaxially.