Loudspeaker diaphragm, method of manufacturing same, and loudspeaker employing same
US10645509B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 1, 2019 |
| Grant date | May 5, 2020 |
| Priority date | — |
| Expiry date | Feb 1, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2307/029
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A loudspeaker diaphragm includes a woven fabric which is a base member, a sealing layer, and a coating layer. The woven fabric includes a first face and a second face on the reverse side of the woven fabric from the first face. The woven fabric is made into the shape of a diaphragm. The sealing layer is disposed on the first face of the woven fabric, and seals the mesh openings surrounded by warp threads and weft threads of the woven fabric. The coating layer is formed of a first composite material which is a mixture of a plurality of first short nanofibers and a first resin. The coating layer permeates the woven fabric from the second face of the woven fabric to the sealing layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.