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:
Dec. 09, 2008
Filed:
Dec. 10, 2004
Applicants:
Stephane Dedieu, Ottawa, CA;
Philippe Moquin, Ottawa, CA;
Inventors:
Stephane Dedieu, Ottawa, CA;
Philippe Moquin, Ottawa, CA;
Assignee:
Mitel Networks Corporation, Ottawa, Ontario, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05K 5/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An improvement is provided in loudspeaker enclosures characterised by a frequency response having at least one null due to a cavity mode. The improvement comprises introducing an aperture at a high pressure region of said enclosure for provided a pressure leak thereby substantially eliminating said at least one null.