Loudspeaker
US4488010A · kind A · utility
3Cited by
2References
14Claims
0Family size
Inventors
Key dates
| Filing date | Sep 23, 1982 |
| Grant date | Dec 11, 1984 |
| Priority date | — |
| Expiry date | Sep 23, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R17/08
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A loudspeaker primarily for the high frequency audio region includes a driving device coupled to a diaphragm of convex outer configuration and extending over more than 180.degree. spherical angle. The driving device changes the distance between the two coupling areas of the diaphragm under the action of an electrical signal applied thereto. Elastic deformations appear on the diaphragm which give rise to an emission of soundwaves.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.