Methods, precursors, and abrasive blasting masks for manufacturing noise attenuating devices
US11911873B2 · kind B2 · utility
0Cited by
12References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 3, 2021 |
| Grant date | Feb 27, 2024 |
| Priority date | — |
| Expiry date | Nov 18, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64D2033/0206
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Noise attenuating devices and methods, precursors and abrasive blasting masks for manufacturing noise attenuating devices are disclosed. An exemplary method disclosed herein includes bonding a facing sheet of the noise attenuating device to a cellular core and then perforating the facing sheet. Perforating the facing sheet may be performed by abrasive blasting using a mask configured to prevent the abrasive blasting of an underlying structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.