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:
May. 30, 2023
Filed:
Nov. 16, 2018
Drägerwerk Ag & Co. Kgaa, Lübeck, DE;
Ludger Tappehorn, Lübeck, DE;
Klaus Abraham, Lübeck, DE;
Thorsten Dunkel, Fahrenkrug, DE;
Andreas Junk, Lübeck, DE;
Drägerwerk AG & Co. KGaA, Lübeck, DE;
Abstract
A nonreturn valve () for a compact ventilation system (), includes a recoil membrane () and a holding element () for holding the recoil membrane () and for fastening the nonreturn valve () at a flow duct () of the compact ventilation system (). The recoil membrane () has at least one mechanical stabilizing section () for cooperating with at least one mechanical counter-stabilizing section () of the holding element () or of the flow duct () of the compact ventilation system (). At least one opening section () is provided for the defined movement of the recoil membrane () during the opening of the nonreturn valve () and a holding section () is provided for holding the recoil membrane () at a counter-holding section () of the holding element (). A compact ventilation system () is provided with such a nonreturn valve ().