EP 1474798 A1 20041110 - SOUNDPROOFING ASSEMBLY AND A PART COMPRISING A WALL WHICH IS COVERED WITH SAID ASSEMBLY
Title (en)
SOUNDPROOFING ASSEMBLY AND A PART COMPRISING A WALL WHICH IS COVERED WITH SAID ASSEMBLY
Title (de)
SCHALLDÄMPFUNGSBAUGRUPPE UND TEIL MIT EINER WAND, DIE MIT DER BAUGRUPPE BEDECKT IST
Title (fr)
ENSEMBLE D INSONORISATION ET PIECE COMPRENANT UNE PAROI RECOUVERTE PAR LEDIT ENSEMBLE
Publication
Application
Priority
- FR 0300430 W 20030211
- FR 0201648 A 20020211
Abstract (en)
[origin: WO03069596A1] The invention relates to a soundproofing assmebly which is intended, in particular, to soundproof a motor vehicle. The inventive assembly comprises four stacked layers, consisting respectively of: a first layer having an air resistance of between 500 and 2,000 N.m-3.s; a second porous, acoustic spring-type layer having a resistivity of between 10, 000 N.m-4.s and 50,000 N.m-4.s; a third viscoelastic, airtight, heavy mass-type layer having a density that is greater than or equal to 1,500 Kg/m3 and a surface density of between 0.2 Kg/m2 and 9 Kg/m2; and a fourth porous, acoustic spring-type layer having a resistivity of between 10,000 N.m-4.s and 50,000 N.m-4.s.
IPC 1-7
IPC 8 full level
B60R 13/08 (2006.01); B32B 5/18 (2006.01); G10K 11/16 (2006.01); G10K 11/162 (2006.01); G10K 11/168 (2006.01)
CPC (source: EP US)
G10K 11/168 (2013.01 - EP US)
Citation (search report)
See references of WO 03069596A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT SE SI SK TR
DOCDB simple family (publication)
WO 03069596 A1 20030821; WO 03069596 A8 20031023; AT E384324 T1 20080215; DE 60318681 D1 20080306; DE 60318681 T2 20090115; EP 1474798 A1 20041110; EP 1474798 B1 20080116; ES 2300595 T3 20080616; FR 2835955 A1 20030815; FR 2835955 B1 20040716; JP 2005517983 A 20050616; JP 4126018 B2 20080730; US 2005103564 A1 20050519; US 7201253 B2 20070410
DOCDB simple family (application)
FR 0300430 W 20030211; AT 03739524 T 20030211; DE 60318681 T 20030211; EP 03739524 A 20030211; ES 03739524 T 20030211; FR 0201648 A 20020211; JP 2003568645 A 20030211; US 50397504 A 20040810