Sandwich acoustic panel
US6615950B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 15, 2001 |
| Grant date | Sep 9, 2003 |
| Priority date | — |
| Expiry date | Feb 2, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10K11/172
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
An acoustic panel with several degrees of freedom comprises a resistive layer (14), a compartmentalized structure (16) formed from at least two superposed compartmentalized layers (18) and a back reflector (17), starting from an outside face facing an incident acoustic wave. A porous separator (24) is placed between each pair of adjacent compartmentalized layers. On each of its faces, this separator is fitted with tubular guides (26) that penetrate into at least some of the cells (20) of the compartmentalized layers. This thus aligns the cells over the entire thickness of the compartmentalized structure (24), regardless of the shape of the panel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.