Double-dome speaker
US6980664B2 · kind B2 · utility
11Cited by
7References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 4, 2002 |
| Grant date | Dec 27, 2005 |
| Priority date | — |
| Expiry date | Jan 29, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R9/063
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A loudspeaker comprising a moving coil and a membrane fastened to a chassis, where the membrane is divided into a concentrically disposed inner membrane part and a concentrically disposed outer membrane part, whereby a meeting area is defined between the inner membrane part and the outer membrane part, the inner membrane part being fastened to an inner moving coil and the outer membrane part being fastened to an outer moving coil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.