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. 03, 2021
Filed:
Mar. 18, 2016
Applicant:
Knowles Electronics, Llc, Itasca, IL (US);
Inventor:
Erik Wiederholtz, St. Charles, IL (US);
Assignee:
Knowles Electronics, LLC, Itasca, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R 1/28 (2006.01); H04R 25/00 (2006.01); H04R 1/10 (2006.01);
U.S. Cl.
CPC ...
H04R 25/48 (2013.01); H04R 1/2811 (2013.01); H04R 1/1016 (2013.01);
Abstract
In one aspect, a low frequency driver is provided having a diaphragm operable to produce sound, a front volume, and an outlet that receives sound from the front volume and directs sound out from the low frequency driver. The low frequency driver further includes a low-pass filter chamber in communication with the front volume.
Wiederholtz, Erik. (2021). Driver with acoustic filter chamber (U.S. Patent No. 11082778). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11082778
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile