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:
Sep. 10, 2024
Filed:
Jan. 18, 2022
Applicant:
Carl Freudenberg KG, Weinheim, DE;
Inventors:
Christopher Schaefer, Ober-Ramstadt, DE;
Ingo Stephan, Rimbach, DE;
Markus Filler, Grasellenbach, DE;
Assignee:
CARL FREUDENBERG KG, Weinheim, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D 39/16 (2006.01); B01D 46/54 (2006.01); B32B 5/02 (2006.01); B32B 5/26 (2006.01); B32B 27/12 (2006.01); B32B 27/32 (2006.01); F16K 24/04 (2006.01); F21S 45/30 (2018.01); H01M 50/30 (2021.01); H05K 5/02 (2006.01);
U.S. Cl.
CPC ...
H05K 5/0213 (2013.01); B01D 39/1623 (2013.01); B01D 39/1692 (2013.01); B01D 46/543 (2013.01); B32B 5/022 (2013.01); B32B 5/266 (2021.05); B32B 27/12 (2013.01); B32B 27/322 (2013.01); B01D 2239/0216 (2013.01); B01D 2239/0618 (2013.01); B01D 2239/065 (2013.01); B01D 2239/1258 (2013.01); B01D 2279/45 (2013.01); B32B 2250/02 (2013.01); B32B 2307/724 (2013.01); B32B 2457/00 (2013.01);
Abstract
A pressure equalising device for a housing, including an inside, an outside, and a lattice-like cage having a gas passage opening. The gas passage opening connects the inside and the outside in a differential pressure-dependent and flow-conducting manner. The gas passage opening is covered by a gas-permeable membrane which includes at least one nonwoven layer. The nonwoven layer includes fibers which are substantially completely sheathed by a sheath of an elastomer.