EP 0706596 B1 20020529 - ACOUSTIC/SHOCK WAVE ATTENUATING ASSEMBLY
Title (en)
ACOUSTIC/SHOCK WAVE ATTENUATING ASSEMBLY
Title (de)
SCHALL- UND STOSSWELLENSCHLUCKENDE VORRICHTUNG
Title (fr)
SYSTEME D'AFFAIBLISSEMENT D'ONDES DE CHOC ET D'ONDES ACOUSTIQUES
Publication
Application
Priority
US 9306319 W 19930702
Abstract (en)
[origin: CA2166399A1] An acoustic/shock wave attenuating assembly (10) comprised of porous screens (12) forms an enclosure filled with a suitable pressure wave attenuating medium (14) or material having fluid characteristics. This basic configuration can be suspended or held in place by a rigid structure (16). When the pressure attenuating medium (14) is a liquid, the attenuating assembly (10) is provided with a lining (30) for containment. Multiple attenuating assemblies (10) can be employed, with adjacent attenuating assemblies separated by a small gap (40). The pressure attenuating medium (14) may be a liquid, gas emulsion, an aqueous foam, or a gel (with or without entrained gas). Alternatively, solid particulates (62) having bulk mechanical properties of a fluid may be employed as the pressure wave attenuating medium and may have an adhesive or the like resisting relative movement between particulates (62) to simulate viscous effects. Elements of the assembly may incorporate materials which absorb thermal energy through endothermic chemical reactions, such as intumescent materials, to enhance the pressure attenuating effect.
IPC 1-7
IPC 8 full level
E01F 8/00 (2006.01); E04B 1/82 (2006.01); F42B 33/00 (2006.01); F42D 5/045 (2006.01); G10K 11/16 (2006.01); G10K 11/162 (2006.01)
CPC (source: EP)
E01F 8/0058 (2013.01); E01F 8/007 (2013.01); E04B 1/82 (2013.01); F42D 5/045 (2013.01); G10K 11/16 (2013.01)
Designated contracting state (EPC)
BE DE GB NL
DOCDB simple family (publication)
CA 2166399 A1 19950112; CA 2166399 C 20070501; DE 69331973 D1 20020704; DE 69331973 T2 20030116; EP 0706596 A1 19960417; EP 0706596 A4 19970402; EP 0706596 B1 20020529
DOCDB simple family (application)
CA 2166399 A 19930702; DE 69331973 T 19930702; EP 93918145 A 19930702