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. 29, 2013
Filed:
Jan. 05, 2009
Applicants:
Axel Grell, Burgdorf, DE;
Markus Kuhr, Singapore, SG;
Axel Bergmeier, Wietze, DE;
Inventors:
Assignee:
Sennheiser electronic GmbH & Co. KG, Wedemark, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04R 25/00 (2006.01); H04M 1/00 (2006.01); H04M 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
There is provided an earphone having at least one housing () and at least one electroacoustic transducer () having a first and a second surface (). The earphone further has a first volume () defined by the first surface () of the electroacoustic transducer () and by a first end () of the housing (), and a second volume () defined by the second surface () of the electroacoustic transducer () and by a second end () of the housing (). An opening () is provided between the first and second volumes (). A closing unit () serves to at least partially close the opening ().