Sound-attenuating composite structure
US9741331B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 1, 2016 |
| Grant date | Aug 22, 2017 |
| Priority date | — |
| Expiry date | Jun 1, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T50/60
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A sound-attenuating composite structure may comprise a honeycomb core assembly having a plurality of honeycomb cells defined by sidewalls, wherein the honeycomb core assembly is sandwiched between an inner impervious skin and a perforated outer skin. The sound-attenuating composite structure may further comprise a ceramic foam insert received in each of the honeycomb cells at a predetermined insertion depth to form an obstruction therein. Each of the ceramic foam inserts may have a predetermined thickness defined between substantially flat top and bottom surfaces. The sound-attenuating composite structure may have predetermined acoustic performance characteristic that are controlled, at least in part, by the predetermined thickness and the predetermined insertion depth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.