EP 2841660 A1 20150304 - SOUND-ABSORBING ELEMENT
Title (en)
SOUND-ABSORBING ELEMENT
Title (de)
SCHALLABSORBIERENDES ELEMENT
Title (fr)
ÉLÉMENT D'ABSORPTION ACOUSTIQUE
Publication
Application
Priority
- CH 5732012 A 20120426
- CH 14872012 A 20120824
- CH 24292012 A 20121116
- CH 5972013 A 20130313
- CH 2013000069 W 20130423
Abstract (en)
[origin: WO2013159240A1] The invention relates to a sound-absorbing element (10) comprising a cover layer (2, 2.2) having a micro perforation (21); a substrate layer (1) having a plurality of through-passages (11), such as in particular bores or slots; and an intermediate layer (3, 3.2), which holds the cover layer (2) spaced apart from the substrate layer (1), wherein the intermediate layer (3, 3.2) is designed to create a communicating connection between the micro perforation (21) of the cover layer (2) and passages (11) in the substrate layer (1) in order to produce a sound-absorbing effect.
IPC 8 full level
CPC (source: EP)
E04B 1/86 (2013.01); E04B 2001/748 (2013.01); E04B 2001/8461 (2013.01); E04B 2001/848 (2013.01); E04B 2001/8485 (2013.01); E04B 2001/8495 (2013.01)
Citation (search report)
See references of WO 2013159240A1
Citation (examination)
- DE 202007001728 U1 20070426 - AKUSTIKBAU FERDINAND EWERS GMB [DE]
- EP 0246464 A1 19871125 - PAPE HANS [DE], et al
- US 3166149 A 19650119
- DE 102005019433 A1 20061102 - RICHTER FURNIERTECHNIK GMBH & [DE]
- DE 202006008302 U1 20060831 - LINDNER AG [DE]
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
DOCDB simple family (publication)
WO 2013159240 A1 20131031; CH 706394 A2 20131031; EP 2841660 A1 20150304
DOCDB simple family (application)
CH 2013000069 W 20130423; CH 5972013 A 20130313; EP 13720219 A 20130423