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:
Jan. 03, 2017
Filed:
Feb. 14, 2015
Applicant:
Coleridge Design Associates Llc, San Jose, CA (US);
Inventor:
Geoffrey A. Boyd, San Jose, CA (US);
Assignee:
Coleridge Design Associates LLC, San Jose, CA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04R 1/00 (2006.01); H04R 9/04 (2006.01); H03F 3/181 (2006.01);
U.S. Cl.
CPC ...
H04R 9/04 (2013.01); H03F 3/181 (2013.01);
Abstract
An electromagnetic voice coil actuator comprises a pot core magnet structure having a magnetic flux conductive core, a field coil within the pot core magnet structure for generating magnetic field through the magnetic flux conductive core and across an air gap, a voice coil disposed within the air gap. The voice coil and the field coil are each driven by an amplified signal derived from the audio input signal to create an actuation force, wherein the pot core magnet structure uses a soft magnet core.