Speaker
US7570779B2 · kind B2 · utility
3Cited by
4References
6Claims
0Family size
Assignees
Inventor
Key dates
| Filing date | Mar 22, 2005 |
| Grant date | Aug 4, 2009 |
| Priority date | — |
| Expiry date | Nov 25, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2400/11
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a speaker having a magnet circuit causing vibrations of a diaphragm and attached to and supported on a frame, a plurality of projections is formed on a bottom portion of the frame supporting the magnetic circuit. The projections are in point contact with a rear-facing face of a flange of a yoke partially forming the magnetic circuit in order for the magnetic circuit to be supported on the speaker frame.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.