Ceramic metal matrix diaphragm for loudspeakers
US6327372A · kind A · utility
8Cited by
6References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 5, 1999 |
| Grant date | Dec 4, 2001 |
| Priority date | — |
| Expiry date | Jan 5, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2307/027
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A speaker diaphragm for a loudspeaker that has a composite material formed of two layers of ceramic material separated by a light metal substrate with the percentage ratio of the thickness of the ceramic layers to the light metal substrate being in the range of from about 10% to 45% for each ceramic layer and a corresponding 80% to 10% for the lightweight metal substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.