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:
Apr. 05, 2022
Filed:
Feb. 24, 2020
Applicant:
Bose Corporation, Framingham, MA (US);
Inventors:
Assignee:
Bose Corporation, Framingham, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R 25/00 (2006.01); H04R 1/28 (2006.01); H04R 7/24 (2006.01); H04R 9/02 (2006.01); H04R 9/06 (2006.01);
U.S. Cl.
CPC ...
H04R 1/2826 (2013.01); H04R 1/2811 (2013.01); H04R 7/24 (2013.01); H04R 9/025 (2013.01); H04R 9/06 (2013.01); H04R 2400/11 (2013.01);
Abstract
Various implementations include loudspeaker drivers. In some aspects, an electro-acoustic driver includes: a cup section; a core section at least partially housed in the cup section, the core section including: a primary magnet; and a coin adjacent to the primary magnet; a bobbin surrounding the core section between the cup section and the core section, where the bobbin and the core section define an inner magnetic gap; a coil surrounding the bobbin and a portion of the core section; and a ferrofluid located at the inner magnetic gap, where the driver has an outer diameter less than or equal to approximately 10 millimeters.