Noise suppression structure and method of making the same
US7318499B2 · kind B2 · utility
4Cited by
43References
10Claims
0Family size
Assignee
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Key dates
| Filing date | Feb 20, 2004 |
| Grant date | Jan 15, 2008 |
| Priority date | — |
| Expiry date | Apr 27, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24496
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An integrated noise suppression acoustic panel includes a back plate, a face plate, and a bulk foam absorber disposed between the back plate and the face plate. The bulk foam absorber is formed of a thermoset material, such as bismaleimide or phenolic, and is manufactured using a low pressure process. In particular, a foamable material is melted, and a blowing agent is mixed with the foamable material to obtain a mixture. The foam is formed and the mixture is cured by heating it to a temperature, and maintaining the mixture at the temperature for a time sufficient to cure the mixture.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.