Acoustic barrier caps in acoustic honeycomb
US11437008B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Nov 12, 2019 |
| Grant date | Sep 6, 2022 |
| Priority date | — |
| Expiry date | May 6, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB32B2605/18
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Acoustic honeycomb structures that include cells in which a friction-locking insertion process is used to locate acoustic barriers within honeycomb cells to provide multiple degree of freedom (MDOF) acoustic liners having a variety of acoustic resonator depths. Solid polymer films are formed into acoustic barrier caps. The acoustic barrier caps are friction-locked and bonded to cell walls at one or more cell depths to form acoustically reflective hard walls that form effective bottom ends for acoustic resonators.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.