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:
Oct. 15, 2019
Filed:
Mar. 08, 2018
Alps Alpine Co., Ltd., Tokyo, JP;
Taishi Numata, Niigata, JP;
Yutaka Sato, Niigata, JP;
Kiyoshi Sato, Niigata, JP;
Hideji Sato, Miyagi, JP;
ALPS ALPINE CO., LTD., Tokyo, JP;
Abstract
A sound producing device includes a diaphragm, an armature extending parallel to the diaphragm, a coil having a wire wound around the armature in multiple turns, multiple magnets facing the armature, a yoke supporting the multiple magnets, a transmitting body configured to transmit a vibration of the armature to the diaphragm, a driving-side frame on which the armature, the coil, and the yoke supporting the multiple magnets are mounted, and a vibration-side frame including an opening in which the diaphragm is vibratably supported. The driving-side frame and the vibration-side frame are placed one over the other.