EP 4169013 A1 20230426 - ACOUSTIC PANEL AND ASSOCIATED MANUFACTURING METHOD
Title (en)
ACOUSTIC PANEL AND ASSOCIATED MANUFACTURING METHOD
Title (de)
AKUSTIKPLATTE UND ZUGEHÖRIGES HERSTELLUNGSVERFAHREN
Title (fr)
PANNEAU ACOUSTIQUE ET PROCEDE DE FABRICATION ASSOCIE
Publication
Application
Priority
- CA 3084631 A 20200623
- FR 2021051015 W 20210607
Abstract (en)
[origin: WO2021260286A1] Disclosed is an acoustic panel comprising two substantially parallel skins (2, 3) between which cavities forming Helmholtz resonators are arranged, one of said skins (2, 3) being bored with orifices (8a, 8b, 9) each of which opens into one of said cavities and forms a neck of the resonators, the panel being characterised in that one or more of said cavities consists of a hollow structure (4) having the shape of a triangular-based prism.
IPC 8 full level
G10K 11/168 (2006.01); B32B 3/12 (2006.01); B32B 3/26 (2006.01); G10K 11/172 (2006.01)
CPC (source: EP US)
B32B 1/00 (2013.01 - EP); B32B 3/12 (2013.01 - EP US); B32B 3/20 (2013.01 - EP); B32B 3/266 (2013.01 - EP US); B32B 27/08 (2013.01 - EP US); B32B 27/20 (2013.01 - EP); B32B 27/34 (2013.01 - EP); B33Y 80/00 (2014.12 - US); G10K 11/168 (2013.01 - EP US); G10K 11/172 (2013.01 - EP US); B29C 64/118 (2017.07 - US); B32B 2250/03 (2013.01 - EP US); B32B 2250/40 (2013.01 - US); B32B 2262/106 (2013.01 - EP); B32B 2307/102 (2013.01 - EP US); B32B 2605/18 (2013.01 - EP); B32B 2607/00 (2013.01 - US); B33Y 10/00 (2014.12 - US); B33Y 80/00 (2014.12 - EP)
Citation (search report)
See references of WO 2021260286A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
CA 3084631 A1 20211223; CN 116075884 A 20230505; EP 4169013 A1 20230426; US 2023252966 A1 20230810; WO 2021260286 A1 20211230
DOCDB simple family (application)
CA 3084631 A 20200623; CN 202180058154 A 20210607; EP 21742162 A 20210607; FR 2021051015 W 20210607; US 202118012108 A 20210607