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:
Dec. 26, 2017
Filed:
Apr. 15, 2016
Applicant:
Harman International Industries, Inc., Stamford, CT (US);
Inventor:
Brian Sterling, Farmington Hills, MI (US);
Assignee:
Harman International Industries, Inc., Stamford, CT (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H04R 9/06 (2006.01); H04R 7/18 (2006.01); H04R 9/02 (2006.01); H04R 9/04 (2006.01); H04R 7/16 (2006.01);
U.S. Cl.
CPC ...
H04R 7/18 (2013.01); H04R 7/16 (2013.01); H04R 9/025 (2013.01); H04R 9/04 (2013.01); H04R 9/045 (2013.01); H04R 9/06 (2013.01); H04R 2209/041 (2013.01); H04R 2400/07 (2013.01);
Abstract
A loudspeaker includes a voice coil in a balanced state. In the loudspeaker, at least a first suspension element acts on a first side of the voice coil, and at least a second suspension element acts on a second side of the voice coil. The loudspeaker includes a symmetric magnet assembly. The voice coil aligns with the symmetric magnet assembly. The symmetric alignment contributes to the loudspeaker yielding substantially symmetric motor force (BL), suspension stiffness (K), and inductance (Le).