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. 28, 2006
Filed:
Sep. 26, 2002
Shuhei Konishi, Osaka, JP;
Kimihiro Ando, Mie, JP;
Shuhei Konishi, Osaka, JP;
Kimihiro Ando, Mie, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A loudspeaker comprising an enclosureprovided with a second diaphragm disposed at an opening, and at least one sound generatorcoupled acoustically with the enclosure. The sound generator is provided with a first diaphragmwherein the second diaphragm has an area greater than an area of the first diaphragm. In the present invention, the shape of the enclosure, and the positioning and shape of the first and the second diaphragms can be designed at a designer's option. Thus a small-sized electronic apparatus can be obtained with a greater designing freedom, while a large-sized diaphragm prevents a decrease of generated sound pressure.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile