Speaker
US9113258B2 · kind B2 · utility
1Cited by
1References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 26, 2011 |
| Grant date | Aug 18, 2015 |
| Priority date | — |
| Expiry date | May 12, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2307/207
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A speaker includes a holder forming a hollow space, a magnetic system received into the hollow space and defining a magnetic gap, an elastic plate assembled with the holder and defining a first surface and a second surface opposite to the first surface, a diaphragm defining a dome part connected with the first surface of the elastic plate and an edge part connected with the second surface of the elastic plate, and at least a coil defining an end suspended in the magnetic gap and an another end connected with the dome part. The edge part defines an arcuate portion depressed toward the magnetic system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.