Shock insensitive initiating devices
First Claim
1. A shock insensitive explosive initiating device comprising:
- an elongated metal casing having an open end and a closed end;
a quantity of a hydrated metal picrate disposed within said elongated metal casing adjacent the closed end thereof;
an inert pressure plug disposed within said elongated metal casing and abutting said quantity of hydrated metal picrate;
a quantity of thermite igniter composition disposed within and adjacent said open end of said elongated metal casing;
said quantity of thermite igniter composition being in abutting relationship with said inert pressure plug and provided with an exposed surface;
an elongated heat generating fuze element having a first end embedded within said quantity of thermite igniter composition, a second end embedded within said hydrated metal picrate, and an intermediate portion extending through said inert pressure plug; and
ignition means disposed within said open end of said elongated metal casing and in abutting relationship with said thermite igniter composition.
1 Assignment
0 Petitions
Accused Products
Abstract
The invention relates to a shock insensitive explosive train initiating dce including a thin elongated metal casing containing a quantity of hydrated metal picrate therein, a thermite igniter composition disposed adjacent to the hydrated metal picrate charge and an ignition means selected from ignition means consisting of an electric match and a length of fuze cord. In a specific example, the hydrated metal picrate charge is barium picrate hydrate which may be disposed in an open (FIG. 1) or a sealed (FIG. 2) copper or aluminum casing. In the embodiment of FIG. 3, a tin/zinc alloy, protective, safety cover is disposed over a portion of the hydrated metal picrate. This safety cover has a low melting point (200° C.) and is adapted to melt in the event of a fire to thereby "unconfine" the hydrate metal picrate charge prior to it reaching explosion temperature of approximately 341° C.
16 Citations
20 Claims
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1. A shock insensitive explosive initiating device comprising:
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an elongated metal casing having an open end and a closed end; a quantity of a hydrated metal picrate disposed within said elongated metal casing adjacent the closed end thereof; an inert pressure plug disposed within said elongated metal casing and abutting said quantity of hydrated metal picrate; a quantity of thermite igniter composition disposed within and adjacent said open end of said elongated metal casing; said quantity of thermite igniter composition being in abutting relationship with said inert pressure plug and provided with an exposed surface; an elongated heat generating fuze element having a first end embedded within said quantity of thermite igniter composition, a second end embedded within said hydrated metal picrate, and an intermediate portion extending through said inert pressure plug; and ignition means disposed within said open end of said elongated metal casing and in abutting relationship with said thermite igniter composition. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A shock insensitive explosive initiating device comprising:
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an elongated metal casing having a quantity of a hydrated metal picrate disposed therein; a cup-shaped thermite igniter composition charge disposed around an end of said elongated metal casing and extending over a portion of the length of said elongated metal casing; and ignition means disposed in abutting relationship with said thermite igniter composition charge. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A shock insensitive explosive initiating device comprising:
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an elongated first metal shell having an open end and a closed end and having a quantity of a hydrated metal picrate ignition charge disposed within said closed end and extending from said open end; a second metal shell disposed over said open end of said first elongated first metal shell and encasing the portion of said hydrated metal picrate ignition charge extending therefrom; a thermite igniter composition charge disposed over said closed of said elongated first metal; and ignition means disposed in abutting relationship with said thermite igniter composition. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A shock insensitive explosive train initiating device comprising:
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a thin elongated, metal casing; a quantity of a hydrated metal picrate disposed within said thin elongated copper casing; a thermite igniter composition disposed adjacent said quantity of a hydrated metal picrate; ignition means disposed adjacent said thermite igniter composition whereby, upon activation, said ignition means ignites said thermite igniter composition and said thermite igniter composition ignites said hydrated metal picrate. - View Dependent Claims (20)
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Specification