Blast compression wave absorbing device

Details Blast compression wave absorbing device Blast compression wave absorbing device

2006-03-28

2006-03-28

Lockett, Kimberly (Department: 2837)

Acoustics

Sound-modifying means

Sound absorbing fence or screen

Reexamination Certificate

active

07017705

ABSTRACT:
A blast compression wave absorbing device comprises a container filled with gas or air under pressure below ambient pressure (under vacuum). The device is positioned close to the facility or structure being protected, in atmosphere or under water. When a blast compression wave reaches the device, in accordance with various embodiments of the invention, the container collapses, ruptures, or its interior is being connected to the environment through rupturable diaphragm or fast-actuating valve. The ambient air starts to fill the internals of the container generating a negative pressure wave, which interferes with blast compression wave and produces a resulting pressure wave with reduced pressure and impulse affecting the facility or structure to be protected. The device can be used in a counter-terrorism operations, to protect high-risk facilities (nuclear and military installations, petrochemical plants, embassies), submerged structures, or to protect personnel in tunnels and bunkers from shock waves of fuel-air explosives.

REFERENCES:
patent: 4834210 (1989-05-01), Kennedy
patent: 5394786 (1995-03-01), Gettle et al.
patent: 5645184 (1997-07-01), Rowse et al.
patent: 2284694 (1998-10-01), None
patent: 2314245 (1999-06-01), None
patent: 2335788 (2000-01-01), None
patent: 2368716 (2003-07-01), None

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