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. 04, 2024
Filed:
Apr. 08, 2020
Applicant:
Purifi Aps, Hojbjerg, DK;
Inventors:
Assignee:
PURIFI APS, Hojbjerg, DK;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R 7/20 (2006.01); H04R 7/18 (2006.01); H04R 9/06 (2006.01);
U.S. Cl.
CPC ...
H04R 7/20 (2013.01); H04R 7/18 (2013.01); H04R 9/06 (2013.01); H04R 2207/021 (2013.01); H04R 2307/207 (2013.01);
Abstract
A loudspeaker with a non-uniform surround, a membrane and a stiffening element preventing the surround from flexing the membrane during operation. A non-uniform surround does not have the same cross section, along the radius of the speaker if circular, all around the perimeter of the membrane as some portions will be upwardly directed and other portions downwardly directed.