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:
Nov. 25, 2014
Filed:
Jun. 03, 2005
Andrew David Unruh, San Jose, CA (US);
Robert J. True, Pleasant Prairie, WI (US);
Edward T. Norcott, Jr., Los Gatos, CA (US);
Jens-peter Axelsson, Benicia, CA (US);
Alireza Jabbari, Berkeley, CA (US);
David J. Prince, Villa Park, IL (US);
Kenneth L. Kantor, Berkeley, CA (US);
Ioannis Kanellakopoulos, Cupertino, CA (US);
Shaolin Wei, San Diego, CA (US);
Andrew David Unruh, San Jose, CA (US);
Robert J. True, Pleasant Prairie, WI (US);
Edward T. Norcott, Jr., Los Gatos, CA (US);
Jens-Peter Axelsson, Benicia, CA (US);
Alireza Jabbari, Berkeley, CA (US);
David J. Prince, Villa Park, IL (US);
Kenneth L. Kantor, Berkeley, CA (US);
Ioannis Kanellakopoulos, Cupertino, CA (US);
Shaolin Wei, San Diego, CA (US);
Tymphany HK Limited, Hong Kong, HK;
Abstract
An acoustic transducer comprises one or more electromagnetic motors that drive one or more sets of multiple diaphragms to provide acoustically efficient loudspeaker systems having dimensions that allow use in applications that would be difficult or impossible with traditional transducers. The diaphragms may be driven directly, inertially or fluidically. If diaphragms are driven by rods that pass through holes in the diaphragms, noise may be generated by air that leaks through the pass-through holes. This noise may be reduced or eliminated by measures that reduce or eliminate the air leakage.