Global Patent Index - EP 0798694 A3

EP 0798694 A3 20000301 - Cleanable low frequency sound attenuator for channels

Title (en)

Cleanable low frequency sound attenuator for channels

Title (de)

Reinigbarer Schalldämpfer (SD) für Kanäle für tiefe Frequenzen

Title (fr)

Atténuateur du son de fréquences bas nettoyable pour canaux

Publication

EP 0798694 A3 20000301 (DE)

Application

EP 97104736 A 19970320

Priority

DE 19612572 A 19960329

Abstract (en)

[origin: EP0798694A2] The channel (1) contains perforated pieces (3) of different lengths. These are connected with chambers (4) outside the channel which form sound absorbers. The channels and or pieces are made of sheet metal, plastics, concrete or brick. The chambers can be cleaned periodically or continuously by fixed or movable nozzles (9). The chambers are connected with pipes (8) for cleaning agent via valves or other adjustments (7).

IPC 1-7

G10K 11/172

IPC 8 full level

G10K 11/172 (2006.01)

CPC (source: EP)

G10K 11/172 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT CH DE FR GB IT LI NL

DOCDB simple family (publication)

EP 0798694 A2 19971001; EP 0798694 A3 20000301; EP 0798694 B1 20030813; AT E247324 T1 20030815; DE 19612572 A1 19971002; DE 59710558 D1 20030918

DOCDB simple family (application)

EP 97104736 A 19970320; AT 97104736 T 19970320; DE 19612572 A 19960329; DE 59710558 T 19970320