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:
Jun. 18, 2013
Filed:
Sep. 17, 2009
Applicants:
Marcus Olander Burak, Göteborg, SE;
Lars-erik Eriksson, Skövde, SE;
Inventors:
Marcus Olander Burak, Göteborg, SE;
Lars-Erik Eriksson, Skövde, SE;
Assignee:
Volvo Aero Corporation, Trollhättan, SE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E04B 1/82 (2006.01);
U.S. Cl.
CPC ...
Abstract
A noise attenuation panel includes a first wall, a second wall and partition walls connected to the first and second walls and defining cells between the first and second walls. The first wall is provided with a plurality of through holes. At least two of the cells are interconnected via a communication hole. One of the through holes leads to a first of the at least two interconnected cells and a second of the interconnected cells is configured to prevent any gas flow through the second cell.