Stiffening plate for acoustic membrane and method of manufacturing same
US9986339B2 · kind B2 · utility
0Cited by
2References
13Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 29, 2016 |
| Grant date | May 29, 2018 |
| Priority date | — |
| Expiry date | Sep 29, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2307/204
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of thinning a multilayer laminate material used for a membrane stiffening plate is provided to obtain a membrane stiffening plate having a thickness less than currently known in the art. The method provides for a significant reduction in the thickness of a membrane stiffening plate and provides for a mechanism to tune the cut-off frequency of a loudspeaker on which the membrane stiffening plate is used.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.