Blasting method

Ammunition and explosive-charge making – Bomb disposal

Reexamination Certificate

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C089S036170

Reexamination Certificate

active

07398720

ABSTRACT:
A blasting method of processing a bomb by forming an explosive layer on an outermost surface of the bomb to be processed having a casing in a particular shape and by exploding the explosive layer, wherein the explosive layer comprises a first explosive layer formed around the outermost surface of the casing and a second explosive layer formed as to surround the first explosive layer, an explosive in the second explosive layer has a higher explosion velocity than an explosive in the first explosive layer, and the second and first explosive layers are exploded at a certain time interval by igniting a particular region of the second explosive layer. The method allows low-cost blasting of bombs, by relaxing the impact of the scattering casing fragments.

REFERENCES:
patent: 3629021 (1971-12-01), Lyerly
patent: 4055247 (1977-10-01), Benedick et al.
patent: 5024159 (1991-06-01), Walley
patent: 5149911 (1992-09-01), Ringbloom et al.
patent: 5574203 (1996-11-01), Noel et al.
patent: RE36912 (2000-10-01), Donovan
patent: 6260464 (2001-07-01), Gorrell et al.
patent: 6647851 (2003-11-01), Donovan
patent: 2003/0131722 (2003-07-01), Donovan
patent: 2003/0209133 (2003-11-01), Greenfield et al.
patent: 7-208899 (1994-01-01), None
patent: 2000-74600 (1998-09-01), None
International Search Report of PCT/JP2005/005121 mailed Apr. 26, 2005.

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