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. 16, 2003
Filed:
Dec. 04, 2001
Applicant:
Inventors:
Takashi Kobayashi, Yamanashi-ken, JP;
Akira Nikaido, Tachikawa, JP;
Assignee:
Citizen Electronics Co., Ltd., Yamanashi-ken, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R 2/500 ;
U.S. Cl.
CPC ...
H04R 2/500 ;
Abstract
A speaker diaphragm having a voice coil secured thereto is provided in a frame, a rotor having a permanent magnet is rotatably supported in the frame, and a stator having poles is provided in the frame. The permanent magnet provided on the rotor is provided for forming a magnetic circuit passing through the rotor and the stator, and a stator coil is provided in the stator. A driving circuit is provided for energizing the stator coil for rotating the rotor.
Kobayashi, Takashi. (2003). Multifunction acoustic device (U.S. Patent No. 6621911). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6621911
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile