EP 1742784 A1 20070117 - DAMPING DEVICE AND METHOD FOR DAMPING SOUND IN CAVITIES OF VEHICLES
Title (en)
DAMPING DEVICE AND METHOD FOR DAMPING SOUND IN CAVITIES OF VEHICLES
Title (de)
DÄMPFUNGVORRICHTUNG UND VERFAHREN ZUR SCHALLDÄMPFUNG IN HOHLRÄUMEN VON FAHRZEUGEN
Title (fr)
DISPOSITIF D'ATTENUATION ET PROCEDE POUR ATTENUER LES SONS DANS DES LES HABITACLES DE VEHICULES
Publication
Application
Priority
- EP 2005051891 W 20050427
- EP 04101772 A 20040427
- EP 05740057 A 20050427
Abstract (en)
[origin: EP1591224A1] A sound damping unit (16) especially for use in vehicles, comprises a carrier material (4) and a shuttering material (2). The damping material forms an open cell structure, and has an absorption coefficient for sound in excess of 0.5. The shuttering and/or damping material are expandable, especially under heating, and direct contact between the damping material and the wall is avoided. The shuttering material is used to form a closed cell structure, and its water uptake is less than 10%, especially 5%. The process used for sound damping comprises fixing the material to a structural element, and then thermally expanding it.
IPC 8 full level
B29C 44/18 (2006.01); B32B 5/18 (2006.01); B32B 5/20 (2006.01); B60R 13/08 (2006.01); B62D 25/20 (2006.01)
CPC (source: EP US)
B29C 44/18 (2013.01 - EP US); B32B 5/18 (2013.01 - EP US); B32B 5/22 (2013.01 - US); B60R 13/08 (2013.01 - EP US); B62D 25/2072 (2013.01 - EP US); B62D 29/002 (2013.01 - EP US); B32B 2307/56 (2013.01 - US); B32B 2605/08 (2013.01 - US); Y10T 29/49615 (2015.01 - EP US)
Citation (search report)
See references of WO 2005105405A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1591224 A1 20051102; EP 1742784 A1 20070117; US 2010213001 A1 20100826; US 8028799 B2 20111004; WO 2005105405 A1 20051110
DOCDB simple family (application)
EP 04101772 A 20040427; EP 05740057 A 20050427; EP 2005051891 W 20050427; US 58774105 A 20050427