Speaker
US8213671B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Nov 1, 2006 |
| Grant date | Jul 3, 2012 |
| Priority date | — |
| Expiry date | Feb 1, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R9/06
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A speaker having improved sound quality by reducing a phase difference and also having an outstanding outward appearance is provided. In a speaker comprising a vibrating element 10, a drive unit 20 for vibrating the vibrating element 10, and a frame 30 supporting the vibrating element 10 and the drive unit 20, the vibrating element 10 comprises a front face region 10A which forms a continuously curved face having a convex-shaped cross-sectional portion T1 formed in its central portion and a concave-shaped cross-sectional portion T2 formed around the portion T1, and a connecting region 10B located on the rear side of the front face region 10A and connected to the drive unit 20.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.