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:
Aug. 25, 2026
Filed:
Oct. 04, 2024
Carl Freudenberg KG, Weinheim, DE;
Michael Söndgen, Bensheim, DE;
Christian Kleinke, Darmstadt, DE;
Christopher Schäfer, Ober-Ramstadt, DE;
Janis Zimmermann, Reinheim, DE;
CARL FREUDENBERG KG, Weinheim, DE;
Abstract
A pressure-equalizing device including a lattice-like cage with a gas passage opening through which gas can flow in a throughflow direction and which connects an inside and an outside of the device in a flow-conducting manner. The gas passage opening has an end face which faces toward the outside and which is covered by a gas-permeable membrane. The gas-permeable membrane is assigned a pressure-relief valve in a functional parallel configuration. The gas-permeable membrane and the pressure-relief valve jointly spatially separate the inside and the outside from one another. The gas-permeable membrane has a circular functional surface delimited by a first outside diameter. A sealing lip sealingly contacts a sealing surface of the cage with elastic preloading, and is configured to lift off the sealing surface and be brought into an open position to provide a flow-conducting connection between the inside and the outside for emergency degassing of the inside.