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. 16, 2019
Filed:
Dec. 08, 2015
Pioneer Corporation, Tokyo, JP;
Tohoku Pioneer Corporation, Yamagata, JP;
Kenichi Oshima, Yamagata, JP;
Koji Takayama, Yamagata, JP;
Hirohito Ohno, Yamagata, JP;
Hiroyuki Dohi, Yamagata, JP;
Hayami Kondo, Yamagata, JP;
PIONEER CORPORATION, Tokyo, JP;
TOHOKU PIONEER CORPORATION, Yamagata, JP;
Abstract
Provided is a speaker device achieving thinning and cost reduction. The speaker device includes a first speaker unit having a first diaphragm connected to a voice coil bobbin, and a second speaker unit having a second diaphragm provided inside the voice coil bobbin. When a sound emission direction P of the first speaker unit and the second speaker unit is upward and an opposite direction of the sound emission direction P is downward, a position of an upper end A of the first diaphragm is substantially equal to an upper end B of the second diaphragm.