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Patent Number: |
7322294 |
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Case ID: |
97916 |
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Patent Title:
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Integrated thin film explosive micro-detonator |
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Status: |
ACTIVE |
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Status Date: |
4/15/2008 9:32:50 AM |
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Issue Date:
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1/29/2008 |
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Filed Date:
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2/24/2006 |
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Serial #:
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1/362,596 |
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Assignee Name:
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The United States of America as represented by the Secretary of the Navy (Washington, DC)
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Inventor(s):
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Laib, Gerald |
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STATEMENT OF
GOVERNMENT INTEREST
The invention described herein may be manufactured and used by or for the Government of the United States of America for government purposes without the payment of any royalties therefor.
BACKGROUND OF THE INVENTION
The invention relates in general to explosive and ignition trains for safety-and-arming devices and in particular to explosive and ignition trains for use with microelectromechanical systems (MEMS) safety-and-arming devices.
MEMS safety-and-arming devices currently being conceived and developed require detonating sources of a size such that conventional detonator fabrication techniques cannot be practically and economically employed. The detonating sources for state
of the art MEMS safety-and-arming devices preferentially employ a maximum size of one cubic millimeter (mm). By comparison, the smallest mechanical detonator ever to enter widespread production has a total volume of nearly 34 cubic mm with a maxi . . . . More |
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A method of making a thin film explosive detonator includes forming a
substrate layer; depositing a metal layer in situ on the substrate layer;
and reacting the metal layer to form a primary explosive layer. The
method and apparatus formed thereby integrates fabrication of a
micro-detonator in a monolithic MEMS structure using "in-situ" production
of the explosive material within the apparatus, in sizes with linear
dimensions below about 1 mm. The method is applicable to high-volume
low-cost manufacturing of MEMS safety-and-arming devices. The apparatus
can be initiated either electrically or mechanically at either a single
point or multiple points, using energies of less than about 1 mJ.
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What is claimed is:
1. An explosive train, comprising: a fixed initiator element comprising a base layer, an unreacted metal substrate layer and a primary explosive layer; an acceptor
explosive; and a mobile slider element being movable between an unarmed position that is out of line with the fixed initiator element and the acceptor explosive and an armed position that is in line with the fixed initiator element and the acceptor
explosive, wherein the mobile slider element is comprised of a base layer, an unreacted metal substrate layer and a primary explosive layer, the base layer including a barrel formed therein, wherein an open end of the barrel is adjacent the acceptor
explosive when the mobile slider element is in the armed position, and wherein the primary explosive layer of the mobile slider element is adjacent the primary explosive layer of the fixed initiator element when the mobile slider element is in the armed
position.
2. The explosive train of claim . . . . More |
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