Title (en)

ACOUSTIC FILTER

Publication

EP 0244044 A3 19881012 (FR)

Application

EP 87201090 A 19840727

Priority

FR 8312895 A 19830804

Abstract (en)

[origin: US4638838A] It has an inlet and an outlet, a bag made from a flexible, deformable material insulating the inlet from the outlet, a liquid contained in the bag on the outlet side, a transfer tube with openings on its side wall and closed by an end plug. Diffusers are positioned on the transfer tube with a given spacing, so as to leave a passage for a gas between two successive diffusers, each diffuser comprising a frame externally surrounded by an elastomer ring.

IPC 1-7

F15B 1/047

IPC 8 full level

F15B 1/08 (2006.01); F15B 1/16 (2006.01)

CPC (source: EP US)

F15B 1/08 (2013.01 - EP US); F15B 1/165 (2013.01 - EP US); F15B 2201/205 (2013.01 - EP US); F15B 2201/3151 (2013.01 - EP US); F15B 2201/3152 (2013.01 - EP US); F15B 2201/411 (2013.01 - EP US); F15B 2201/415 (2013.01 - EP US); F15B 2201/43 (2013.01 - EP US)

Citation (search report)

• [X] US 3115162 A 19631224 - POSH RAYMOND C
• [X] US 3741250 A 19730626 - MERCIER J
• [X] US 2760518 A 19560828 - PEET WILLIAM H
• [A] US 3744527 A 19730710 - MERCIER J
• [A] US 2874721 A 19590224 - JEAN MERCIER
• [A] US 2764537 A 19560925 - RAY BUNCH WALTER, et al
• [A] FR 942447 A 19490208

Designated contracting state (EPC)

BE CH DE GB IT LI

DOCDB simple family (publication)

FR 2550283 A1 19850208; FR 2550283 B1 19880318; DE 3471979 D1 19880714; DE 3484568 D1 19910613; EP 0134738 A2 19850320; EP 0134738 A3 19850710; EP 0134738 B1 19880608; EP 0244044 A2 19871104; EP 0244044 A3 19881012; EP 0244044 B1 19910508; JP S6053201 A 19850326; US 4638838 A 19870127; US 4768616 A 19880906

DOCDB simple family (application)

FR 8312895 A 19830804; DE 3471979 T 19840727; DE 3484568 T 19840727; EP 84401586 A 19840727; EP 87201090 A 19840727; JP 16301684 A 19840803; US 5635487 A 19870527; US 63392084 A 19840724