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:
Jul. 02, 2019
Filed:
Feb. 06, 2017
Applicant:
Tymphany HK, Wanchai, HK;
Assignee:
TYMPHANY HK LIMITED, Wan Chai, HK;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R 9/06 (2006.01); H04R 9/02 (2006.01); H04R 1/34 (2006.01);
U.S. Cl.
CPC ...
H04R 9/063 (2013.01); H04R 1/34 (2013.01); H04R 9/025 (2013.01); H04R 9/06 (2013.01); H04R 2201/34 (2013.01); H04R 2209/041 (2013.01); H04R 2400/11 (2013.01);
Abstract
A driver for a loudspeaker including an inner magnet disposed within a housing, an outer magnet disposed within the housing radially outward of the inner magnet, an inner voice coil having a first diameter, an outer voice coil having a second diameter, the second diameter being larger than the first diameter, where poles of the inner and outer magnets are oppositely disposed, where the inner magnet is configured to contribute only to a magnetic circuit of the inner voice coil, and where the outer magnet is configured to contribute to the magnetic circuit of the inner voice coil and to a magnetic circuit of the outer voice coil.