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:
Dec. 31, 2013
Filed:
Nov. 10, 2006
Sinsuke Konuma, Yamagata, JP;
Satoshi Hachiya, Yamagata, JP;
Koji Maekawa, Yamagata, JP;
Pioneer Corporation, Tokyo, JP;
Tohoku Pioneer Corporation, Tendo, JP;
Abstract
A high performance speaker is provided and includes a simple structure magnetic circuit achieved without the need of a complicated manufacturing process, and a high performance speaker is provided and includes a simple structure diaphragm achieved without the need of a difficult process for forming a U shape of a narrow width in the diaphragm. A speakeris equipped with an inner-magnet-type magnetic circuitprovided with a magnet, a plateand a yoke, a voice coil, and a diaphragmsupporting the voice coilin place close to the end of the platewhile allowing the voice coil to vibrate. The yokeis formed in an approximately flat plate shape having a diameter equal to or larger than that of the plate. The diaphragmhas a dome-shaped vibrating sectionformed in a central portion, a cone-shaped vibrating sectionhaving an outer periphery supported by a speaker frame, and a voice coil bobbinwhich is formed between the dome-shaped vibrating sectionand the cone-shaped vibrating section. The voice coil bobbinis formed in an L-shaped cross section bending outward from an end of a tubular portion in which the voice coilis mounted. The dome-shaped and cone-shaped vibrating sections and the voice coil bobbin are molded together in one piece.