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:
Feb. 28, 2017
Filed:
May. 17, 2013
Fps Inc., Koto-ku, Tokyo, JP;
FPS INC., Tokyo, JP;
Abstract
A hybrid speaker is provided. The hybrid speaker can include first magnets, second magnets, a yoke that accommodates the first and second magnets, a diaphragm, voice coils fixed at one face of the diaphragm, a frame, and a plate spring resiliently supporting the yoke at the frame. The first magnets can be arranged at predetermined intervals such that south poles or north poles thereof are oriented to the same side. The second magnets can have smaller volumes than the first magnets and be arranged singly or plurally between the first magnets their magnetic poles oriented the opposite those of the first magnets. The voice coils can be disposed so as to cross magnetic circuits between the first magnets and the yoke. The diaphragm can be fixed to the frame at periphery portions of the face at the side of the diaphragm at which the voice coils are fixed.