Cellular sound insulation structure including a diaphragm provided with a tube configured to treat different acoustic frequencies, method for manufacturing such a cellular sound insulation structure, and associated tool
US12014714B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 26, 2021 |
| Grant date | Jun 18, 2024 |
| Priority date | — |
| Expiry date | Mar 13, 2042 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64D2033/0206
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A cellular sound insulation structure and associated aircraft, a cell of which is provided with a diaphragm which includes a membrane having at least one orifice passing through a thickness of the membrane, and at least one tube surmounting the orifice and extending from a face of the membrane into one compartment of the cell, the tube comprising a free end, forming an acoustic outlet, which is positioned at a distance (p) from the base cross section of the cell. Also, a method for manufacturing such a cellular sound insulation structure, as well as to a tool for inserting a diaphragm into a cell. Such a cellular structure makes it possible to treat a wider acoustic frequency spectrum, and its acoustic dimensioning as well as its manufacture are simplified.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.