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. 21, 2018
Filed:
Jan. 14, 2016
Applicant:
3m Innovative Properties Company, St. Paul, MN (US);
Inventor:
Jacob H. Ely, Indianapolis, IN (US);
Assignee:
3M Innovative Properties Company, St. Paul, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R 3/02 (2006.01); A61F 11/06 (2006.01); A61F 11/08 (2006.01); H04R 1/10 (2006.01); H04R 25/00 (2006.01);
U.S. Cl.
CPC ...
A61F 11/08 (2013.01); H04R 1/1016 (2013.01); H04R 1/1041 (2013.01); H04R 25/652 (2013.01); A61F 2011/085 (2013.01); H04R 2460/11 (2013.01);
Abstract
An earpiece body with a convoluted acoustic horn and a hearing protection device that includes the earpiece body. The convoluted acoustic horn that is configured to receive airborne sound waves through a first, sound-receiving opening and to emit airborne sound waves through a second, sound-emitting opening, wherein the first, sound-receiving opening is larger in cross-sectional area than the second, sound-emitting opening.