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:
Sep. 20, 2011
Filed:
Jun. 17, 2005
Kazuki Honda, Mie, JP;
Takanori Fukuyama, Mie, JP;
Koji Sano, Mie, JP;
Hiroshi Yano, Mie, JP;
Takeshi Shimokawatoko, Mie, JP;
Kazuya Yamasaki, Osaka, JP;
Kazutaka Kubo, Mie, JP;
Masahide Sumiyama, Mie, JP;
Kazuki Honda, Mie, JP;
Takanori Fukuyama, Mie, JP;
Koji Sano, Mie, JP;
Hiroshi Yano, Mie, JP;
Takeshi Shimokawatoko, Mie, JP;
Kazuya Yamasaki, Osaka, JP;
Kazutaka Kubo, Mie, JP;
Masahide Sumiyama, Mie, JP;
Panasonic Corporation, Osaka, JP;
Abstract
An electroacoustic transducer has a magnetic circuit, a frame combined with the magnetic circuit, a diaphragm combined with a periphery of the frame, a voice coil, a terminal, and a holder covering the frame. The voice coil is combined with the diaphragm and a part of the voice coil is arranged in a magnetic gap of the magnetic circuit. The terminal, made of a metal plate having spring property and electric conductivity, electrically connects an outside circuit and the voice coil utilizing spring pressure generated when the metal plate is bent. The holder forms a stopper for restricting a bend of the metal plate forming the terminal to within a reversible limit of a metallic material.