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. 12, 2011
Filed:
Jun. 06, 2006
Applicants:
Hideo Kitazawa, Nagano, JP;
Akinori Ushikoshi, Nagano, JP;
Takamasa Kaneko, Shizuoka, JP;
Kenji Yokoyama, Tokyo, JP;
Inventors:
Hideo Kitazawa, Nagano, JP;
Akinori Ushikoshi, Nagano, JP;
Takamasa Kaneko, Shizuoka, JP;
Kenji Yokoyama, Tokyo, JP;
Assignee:
Nidec Pigeon Corporation, , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04R 1/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A speaker may include a center pole and a voice coil bobbin having a bobbin that may include nonmagnetic and electric conductor layers and insulator layers disposed between the electric conductor layers. An electrostatic capacity, which is formed between the center pole and the voice coil bobbin, is detected and outputted as an electrical signal.