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:
Oct. 12, 2021
Filed:
Apr. 19, 2019
Applicant:
Cascade Engineering, Inc., Grand Rapids, MI (US);
Inventors:
Andrew Skestone, Caledonia, MI (US);
Michael Thomas Campbell, Grand Rapids, MI (US);
Assignee:
Cascade Engineering, Inc., Grand Rapids, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01N 1/24 (2006.01); B32B 5/26 (2006.01); B32B 5/06 (2006.01); B60R 13/08 (2006.01);
U.S. Cl.
CPC ...
F01N 1/24 (2013.01); B32B 5/06 (2013.01); B32B 5/26 (2013.01); B60R 13/0815 (2013.01);
Abstract
A hybrid acoustic silencer for a motor vehicle includes an insertion loss layer tuned for good insertion loss properties at specific frequencies and an absorption layer tuned for good absorption properties at specific frequencies. The insertion loss layer is configured to be adjacent to a sound radiating surface of the motor vehicle and the absorption layer is configured to face outward from the sound radiating surface of the motor vehicle.