Speaker device
US8582799B2 · kind B2 · utility
2Cited by
3References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 1, 2010 |
| Grant date | Nov 12, 2013 |
| Priority date | — |
| Expiry date | May 22, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2400/11
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A speaker device has a magnet, outer yokes, and inner yokes which are assembled so that a magnetic gap is formed between the outer yoke and inner yokes over which a magnetic flux which is generated from the magnet cuts across. A voice coil unit which is linked to a diaphragm is disposed within the magnetic gap, and positioning members determine the positions of the inner yokes and the outer yokes which attach magnetically to the magnet such that a magnetic gap is formed. The speaker device has a magnetic circuit of which the construction facilitates assembly, and recycling of various individual parts is relatively easy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.