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:
Jul. 03, 2012
Filed:
Nov. 01, 2006
Kyoichi Matsuda, Yamagata, JP;
Toshihiro Hikichi, Yamagata, JP;
Daisuke Itoh, Yamagata, JP;
Teruaki Kaiya, Yamagata, JP;
Kyoichi Matsuda, Yamagata, JP;
Toshihiro Hikichi, Yamagata, JP;
Daisuke Itoh, Yamagata, JP;
Teruaki Kaiya, Yamagata, JP;
Pioneer Corporation, Tokyo, JP;
Tohoku Pioneer Corporation, Yamagata, JP;
Abstract
A speaker having improved sound quality by reducing a phase difference and also having an outstanding outward appearance is provided. In a speaker comprising a vibrating element, a drive unitfor vibrating the vibrating element, and a framesupporting the vibrating elementand the drive unit, the vibrating elementcomprises a front face regionA which forms a continuously curved face having a convex-shaped cross-sectional portion Tformed in its central portion and a concave-shaped cross-sectional portion Tformed around the portion T, and a connecting regionB located on the rear side of the front face regionA and connected to the drive unit