EP 0744496 B1 20000105 - Noise reducer for wayside acoustical barriers
Title (en)
Noise reducer for wayside acoustical barriers
Title (de)
Bahnseitige Lärmreduziereinrichtung für Lärmschutzwände
Title (fr)
Réducteur du bruit pour mur anti-bruit routier
Publication
Application
Priority
IT TO950400 A 19950522
Abstract (en)
[origin: EP0744496A1] The noise reducer comprises tubular members such as spiral tubes (18), or tubes made of two half-shells (22, 24; 26, 28; 40), having at least partially perforated walls and internally lined with a sound-absorbing material (25; 36), and longitudinally fastened to the top of the barrier. A sound-reflector tube (44) may be nested within each tubular member (40). <IMAGE>
IPC 1-7
IPC 8 full level
E01F 8/00 (2006.01)
CPC (source: EP)
E01F 8/0035 (2013.01); E01F 8/007 (2013.01)
Designated contracting state (EPC)
AT CH DE DK ES FR GB LI NL SE
DOCDB simple family (publication)
EP 0744496 A1 19961127; EP 0744496 B1 20000105; AT E188524 T1 20000115; DE 69605974 D1 20000210; ES 2143712 T3 20000516; IT 1279551 B1 19971216; IT TO950400 A0 19950522; IT TO950400 A1 19961122
DOCDB simple family (application)
EP 96201207 A 19960502; AT 96201207 T 19960502; DE 69605974 T 19960502; ES 96201207 T 19960502; IT TO950400 A 19950522