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:
Mar. 24, 2005
Mitsukazu Kuze, Osaka, JP;
Shuji Saiki, Nara, JP;
Sawako Kano, Hyogo, JP;
Toshiyuki Matsumura, Osaka, JP;
Mitsukazu Kuze, Osaka, JP;
Shuji Saiki, Nara, JP;
Sawako Kano, Hyogo, JP;
Toshiyuki Matsumura, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A loudspeaker unit () of a loudspeaker system () is fitted to a cabinet (). An absorbent () is disposed in a hollow chamber (R) inside the cabinet () and absorbs a gas inside the hollow chamber (R). A phase inverting mechanism () inverts the phase by resonating with a sound of a specific frequency radiated from the loudspeaker unit () into the hollow chamber (R) and radiates this sound to outside. The watertight means of the phase inverting mechanism () prevents invasion of moisture into inside the hollow chamber (R) from outside the cabinet () through the phase inverting mechanism ().