Diaphragm edge of speaker
US7463749B2 · kind B2 · utility
0Cited by
3References
9Claims
0Family size
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Key dates
| Filing date | Feb 20, 2004 |
| Grant date | Dec 9, 2008 |
| Priority date | — |
| Expiry date | Jul 13, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2307/207
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Provided is a diaphragm edge of a speaker which is formed by compressing a material including silicon rubber and has an emboss portion on a front surface thereof so that sensitivity of sound is improved. Also, a diaphragm edge of a speaker is formed by compressing a material including silicon rubber and powdered viscose rayon and has an emboss on a front surface thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.