Loudspeaker diaphragm
US10390141B2 · kind B2 · utility
0Cited by
29References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 27, 2016 |
| Grant date | Aug 20, 2019 |
| Priority date | — |
| Expiry date | Jul 7, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2307/029
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A loudspeaker diaphragm (12) comprising a woven fiber body supports damping material (25), for example PVA polymer, on a rearward-facing surface (24). The woven fiber body may be formed of lengths (14) non-metallic fiber material (for example glass fiber) coating with a thin metal coating (32). The mass of the layer of damping material (25) may be significantly greater than the mass of the woven fiber body. An attractive sparkly looking loudspeaker diaphragm (12) may thus be provided which damps undesirable vibration while providing a flatter frequency-response curve (50).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.