Acoustic shock wave attenuating assembly

• US 20070006723A1
• Filed: 07/31/2003
• Published: 01/11/2007
• Est. Priority Date: 07/31/2003
• Status: Active Grant

• Current Assignee: Blastgard Technologies, Inc. (HighCom Global Security, Inc.)
• Original Assignee: Blastgard Technologies, Inc. (HighCom Global Security, Inc.)
• Inventors: Gordon, James, Waddell, John
• Granted Patent: US 8,316,752 B2
• Time in Patent Office: Days
• US Class Current: 89/36.20
• CPC Class Codes: F42D 5/045 Detonation-wave absorbing or damping means
• CPC Class Codes: F42D 5/05 Blasting mats

Abstract

An assembly for attenuating shock waves is made of two flexible sheets arranged one over the other and joined by a plurality of seams, the flexible sheets being confined to form cells or recessed when joined together. The seams are arranged so as to surround the cells or recesses in the sheets, and the cells or recesses are filled with a shock attenuating material.

Claims

1-12. -12. (canceled)

13. A shock-attenuating assembly that is sufficiently flexible to wrap around any shaped structure, said assembly comprising, in combination,

(a) a first film of flexible resin material, wherein said first film of flexible resin material is optionally water-impermeable or is optionally coated with a water-impermeable material;

(b) a second film of flexible resin material, wherein said second film of flexible resin material is optionally water-impermeable or is optionally coated with a water-impermeable material, wherein said second film of flexible resin material has attached pockets spaced from each other along the second film;

(c) the first film attached to the second film via a plurality of seams, wherein the seams surround each of the spaced pockets in such a manner as to make the assembly sufficiently flexible to surround any shaped structure;

(d) each of the pockets filled with a shock wave attenuating material having the flow properties of a liquid.

14. The flexible shock-attenuating assembly according to claim 13 wherein the shock attenuating material is perlite.

15. The flexible shock-attenuating assembly according to claim 13 wherein the shock attenuating material is an aqueous foam.

16. The flexible shock-attenuating assembly according to claim 13 wherein the shock attenuating material is an aerogel.

17. The flexible shock-attenuating assembly according to claim 13 further including within the pockets at least one material selected from the group consisting of fireproofing materials, heat insulating materials, intumescent materials, and radiating insulating materials.

18. The flexible shock-attenuating assembly according to claim 13 further including within the pockets a fire retarding material.

19. The flexible shock-attenuating assembly according to claim 13 wherein the assembly is adapted and constructed so that the assembly can be cut along the seams so that shock attenuating material remains confined in the pockets.

20. The flexible shock-attenuating assembly according to claim 13 wherein the flexible films are porous with respect to at least one of acoustic waves, shock waves, or gas.

21. The flexible shock-attenuating assembly according to claim 13 wherein the flexible sheets are water-impermeable.

22. A flexible shock-attenuating assembly comprising in combination:

(a) a first strip of a water-impermeable polyamide resin material;

(b) a second strip of a water-impermeable polyamide resin material, said second strip having attached pockets spaced from each other along the second strip;

(c) the first strip attached to the second strip via a plurality of seams, the seams surrounding each of the spaced pockets in such a way as to make the assembly flexible.