Loudspeaker membrane and method for manufacturing such a membrane
US9633648B2 · kind B2 · utility
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1References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 24, 2013 |
| Grant date | Apr 25, 2017 |
| Priority date | — |
| Expiry date | Dec 24, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1044
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The invention relates to a loudspeaker membrane having a sandwich structure, having a central web separating two layers of material based on high-rigidity threads impregnated with a polymer resin, characterized in that the central web is formed from a layer of material based on oriented natural fibers that are impregnated with a polymer resin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.