Method of manufacturing speaker diaphragm
US6039146A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 6, 1998 |
| Grant date | Mar 21, 2000 |
| Priority date | — |
| Expiry date | Nov 6, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2307/029
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for manufacturing a speaker diaphragm comprising the steps of forming a plurality of virtual concentric circles between central point of a circle having a predetermined size and a circumference thereof; dividing said each concentric circle with a predetermined angle, forming divided points on the circumference of each concentric circle and arranging a plurality of yarns from a point on the circumference of said circle to another point thereof to come in tangential contact with said divided points, thereby forming a omnidirectional pseudo-textile fabric; thermosetting said pseudo-textile fabric; and removing a gap formed on said pseudo-textile fabric using a resin, a film or a sheet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.