Global patent index - EP 0798426 B1

EP 0798426 B1 2000-04-19 - 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 (EN)

Application

EP 96117510 A

Priority

JP 7444296 A

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 (main, further and additional classification)

E04B 1/82; E01F 8/00

IPC 8 full level (invention and additional information)

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 (invention and additional information)

E04B 1/84 (2013.01); E01F 8/0029 (2013.01); E01F 8/0041 (2013.01); E01F 8/0076 (2013.01); E01F 8/0094 (2013.01); E04B 1/8227 (2013.01)

Designated contracting state (EPC)

DE FR GB

EPO simple patent family

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; SG 47192 A1 19980320; TW 305006 B 19970511

INPADOC legal status

2006-10-20 [REG FR ST] NOTIFICATION OF LAPSE

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2001-04-04 [26N] NO OPPOSITION FILED

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2001-02-07 [REG GB 727B] CASE DECIDED BY THE COMPTROLLER ** SPECIFICATION AMENDED (SECT. 27/1977)

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2000-10-04 [REG GB 727A] APPLICATION FOR AMENDMENT OF SPECIFICATION NOW OPEN TO OPPOSITION (SECT. 27/1977)

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2000-07-21 [ET] FR: TRANSLATION FILED

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2000-05-25 [REF] CORRESPONDS TO:

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2000-04-19 [AK] DESIGNATED CONTRACTING STATES:

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