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. 03, 2018
Filed:
Jan. 22, 2016
Applicant:
Harman Becker Gepkocsirendszer Gyarto Korlatolt Felelossegu Tarsasag, Szekesfehervar, HU;
Inventor:
John B. French, Caledon East, CA;
Assignee:
Harman Becker Gepkocsirendszer Gyarto Korlatolt Felelossegu Tarsasag, Szekesfehervar, HU;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R 9/06 (2006.01); H04R 9/02 (2006.01); H04R 9/04 (2006.01);
U.S. Cl.
CPC ...
H04R 9/02 (2013.01); H04R 9/025 (2013.01); H04R 9/04 (2013.01); H04R 9/06 (2013.01); H04R 9/063 (2013.01); H04R 2209/022 (2013.01);
Abstract
Driver for an acoustic transducer having a moving coil of substantially equal length to the air gap. The air gap may itself be extended in length using an upper or lower lip, or both. A stationary coil is also provided. The moving and stationary coils can be controlled by suitable control blocks to form an electromagnet-based transducer with reduced distortion.