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. 27, 2019
Filed:
Feb. 14, 2013
Illinois Tool Works Inc., Glenview, IL (US);
Nikolaus Schwarzkopf, Wolfsburg, DE;
Marco Spanier, Braunschweig, DE;
ILLINOIS TOOL WORKS INC., Glenview, IL (US);
Abstract
A return air blocking device for ventilation of the interior of a motor vehicle, with a frame or housing with at least one sealing surface and with at least one flexible valve flap mounted on the frame or the housing, which in an idle position abuts on the sealing surface and prevents a flow of air through the return air blocking device, and which, when a sufficient pressure occurs, assumes an opening position lifted from the sealing surface in which it allows a flow of air through the return air blocking device, wherein the at least one valve flap comprises at least one slit on its end mounted on the frame or housing, wherein the frame or the housing comprises at least one holding projection which engages in the at least one slit.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile