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:
Jan. 04, 2022
Filed:
Mar. 20, 2020
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Shinya Kagawa, Osaka, JP;
Mitsukazu Kuze, Osaka, JP;
Abstract
A speaker device that includes: two magnetic circuits arranged side by side and each including a magnetic gap; two voice coil bodies each corresponding to a shape of the magnetic gap and arranged in the magnetic gap in an inserted state; a diaphragm to which the two voice coil bodies are coupled, the diaphragm having a width shorter than a length in a direction in which the two magnetic circuits are arranged; and a frame to which the diaphragm and the two magnetic circuits are attached. In the speaker device, the two voice coil bodies include two coils connected in series, the two coils being connected to a pair of input terminals for receiving an input of an electric signal, the pair of input terminals being disposed between the two voice coil bodies.