Global Patent Index - EP 0798426 B1

EP 0798426 B1 20000419 - Acoustic wave phase varying apparatus and sound insulating wall

Title (en)

Acoustic wave phase varying apparatus and sound insulating wall

Title (de)

Akustischer Wellen-Phasenschieber und Lärmschutzwand

Title (fr)

Dispositif de déphasage d'ondes et mur anti-bruit

Publication

EP 0798426 B1 20000419 (EN)

Application

EP 96117510 A 19961031

Priority

JP 7444296 A 19960328

Abstract (en)

[origin: EP0798426A1] An element is provided for varying the phase of acoustic waves for use in a sound insulating wall. The element comprises a porous member (15) supported around a sound insulating plate assembly (14). The plate assembly (14) comprises a plurality of sound insulating plates (12, 13) which form a plurality of independent spaces (16) therebetween. The sound insulating wall comprises a sound insulating panel (11) provided to stand in the vicinity of a sound source. The phase changing element is mounted along an upper end portion of the sound insulating panel (11). <IMAGE>

IPC 1-7

E04B 1/82; E01F 8/00

IPC 8 full level

E01F 8/00 (2006.01); E04B 1/82 (2006.01); E04B 1/84 (2006.01); G10K 11/16 (2006.01); G10K 11/178 (2006.01)

CPC (source: EP KR)

E01F 8/0029 (2013.01 - EP); E01F 8/0041 (2013.01 - EP); E01F 8/0076 (2013.01 - EP); E01F 8/0094 (2013.01 - EP); E04B 1/8227 (2013.01 - EP); E04B 1/84 (2013.01 - EP); G10K 11/00 (2013.01 - KR)

Designated contracting state (EPC)

DE FR GB

DOCDB simple family (publication)

EP 0798426 A1 19971001; EP 0798426 B1 20000419; CN 1125219 C 20031022; CN 1160810 A 19971001; DE 69607826 D1 20000525; DE 69607826 T2 20001221; JP 2859578 B2 19990217; JP H09265291 A 19971007; KR 100240212 B1 20000115; KR 970065965 A 19971013; MY 124453 A 20060630; SG 47192 A1 19980320; TW 305006 B 19970511

DOCDB simple family (application)

EP 96117510 A 19961031; CN 96122863 A 19961018; DE 69607826 T 19961031; JP 7444296 A 19960328; KR 19960064277 A 19961211; MY PI19964220 A 19961011; SG 1996011071 A 19961108; TW 85111746 A 19960925