EP 1317584 A1 20030611 - ACOUSTIC CONSTRUCTION ELEMENT FOR SOUND INSULATION IN A BROAD RANGE OF FREQUENCIES
Title (en)
ACOUSTIC CONSTRUCTION ELEMENT FOR SOUND INSULATION IN A BROAD RANGE OF FREQUENCIES
Title (de)
SCHALLDÄMBAUELEMENT FÜR SCHALLDÄMPFUNG IN EINEM WEITEN FREQUENZGEBIET
Title (fr)
ELEMENT DE CONSTRUCTION ACOUSTIQUE POUR ISOLATION ACOUSTIQUE DANS UNE LARGE GAMME DE FREQUENCES
Publication
Application
Priority
EP 0008988 W 20000913
Abstract (en)
[origin: WO0222961A1] The invention relates to an acoustic construction element comprising sound insulating cavities of which at least part have a first portion (4), which is situated closest to the external surface (3) of the element and at least a second portion (5) having a maximum internal width (6) which is larger than the smallest width of said first portion (4) of the cavity. At least some of said cavities have different internal volume, of which preferably the portion of the cavities beyond the first portion have a circular or oval shape. Said construction element further comprises preferably cavities (e, f, h) having a substantially constant width over their entire depth. The invention further relates to the use and the method of manufacturing said construction elements.
IPC 1-7
IPC 8 full level
E01F 8/00 (2006.01)
CPC (source: EP)
E01F 8/0076 (2013.01)
Citation (search report)
See references of WO 0222961A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 0222961 A1 20020321; AU 7419600 A 20020326; EP 1317584 A1 20030611
DOCDB simple family (application)
EP 0008988 W 20000913; AU 7419600 A 20000913; EP 00962489 A 20000913