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:
Apr. 22, 2008
Filed:
Apr. 27, 2005
Kazuki Honda, Mie, JP;
Koji Sano, Mie, JP;
Kazutaka Kubo, Mie, JP;
Kazuya Yamasaki, Osaka, JP;
Hiroshi Yano, Mie, JP;
Takeshi Shimokawatoko, Mie, JP;
Takanori Fukuyama, Mie, JP;
Shigeru Tomoeda, Mie, JP;
Mitsutaka Enomoto, Nara, JP;
Masahide Sumiyama, Mie, JP;
Kazuki Honda, Mie, JP;
Koji Sano, Mie, JP;
Kazutaka Kubo, Mie, JP;
Kazuya Yamasaki, Osaka, JP;
Hiroshi Yano, Mie, JP;
Takeshi Shimokawatoko, Mie, JP;
Takanori Fukuyama, Mie, JP;
Shigeru Tomoeda, Mie, JP;
Mitsutaka Enomoto, Nara, JP;
Masahide Sumiyama, Mie, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
An electro-acoustic transducer wherein a stopper of a terminal is composed of an elastic body having an impulsive-force resistance and an excellent resilience. The stopper is mounted on the yoke or lower plate of magnetic circuit, which is made of a metallic material having an impulsive-force resistance. In this way, the stopper can restrict the terminal within the reversibility limit value of the spring force of the metallic material, and hence can enhance the reliability.