EP 1407091 B1 20080813 - SONIC ABSORPTION DEVICE FOR PREMISES
Title (en)
SONIC ABSORPTION DEVICE FOR PREMISES
Title (de)
SCHALLDÄMMUNGSVORRICHTUNG FÜR GEBÄUDE
Title (fr)
DISPOSITIF D'ABSORPTION ACOUSTIQUE POUR UN LOCAL
Publication
Application
Priority
- FR 0202518 W 20020716
- FR 0109707 A 20010716
Abstract (en)
[origin: FR2827419A1] An acoustic panel comprises an embossed metal sheet (1) with a low rate of perforations against a layer (2) of porous acoustic absorbent material. The panel is erected at a distance from a supporting wall or machine housing. The perforations in the sheet metal are in the form of regularly-spaced slits, made to give a resistance to the passage of air of 500-3300 N s/m<3>.
IPC 8 full level
E04B 1/86 (2006.01); E04B 1/82 (2006.01); E04B 1/84 (2006.01)
CPC (source: EP)
E04B 1/86 (2013.01); E04B 2001/8281 (2013.01); E04B 2001/8438 (2013.01); E04B 2001/8442 (2013.01)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI GB GR IE IT LI LU MC NL PT SE SK TR
DOCDB simple family (publication)
FR 2827419 A1 20030117; FR 2827419 B1 20040206; AT E404750 T1 20080815; DE 60228257 D1 20080925; EP 1407091 A1 20040414; EP 1407091 B1 20080813; WO 03008725 A1 20030130
DOCDB simple family (application)
FR 0109707 A 20010716; AT 02787155 T 20020716; DE 60228257 T 20020716; EP 02787155 A 20020716; FR 0202518 W 20020716