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:
Mar. 22, 2011
Filed:
May. 13, 2005
Applicants:
Peter L. Madaffari, Camden, ME (US);
Sietse Jacob Van Reeuwijk, Haarlem, NL;
Inventors:
Peter L. Madaffari, Camden, ME (US);
Sietse Jacob Van Reeuwijk, Haarlem, NL;
Assignee:
Sonion Nederland B.V., Amsterdam, NL;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04R 1/00 (2006.01); H04R 9/06 (2006.01); H04R 11/02 (2006.01); H04R 25/00 (2006.01); H05K 5/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to dual-diaphragm electroacoustic transducers wherein a common magnetic flux path comprises first and second magnetic gaps and a magnet assembly. The invention may provide a miniature transducer with a compact magnetic flux path of improved performance. Electroacoustic transducers in accordance with the invention may comprise a small number of separate parts and provide good acoustic conversion efficiency in a miniature or compact housing.