Thin film bridge initiator and method therefor
AssigneeQuantic Industries, Inc.
InventorsRobert L. Proffit, John L. Wells, Alan L. Lause, John C. Cole
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Abstract
A thin film bridge initiator is mounted on a header for use in a detonator where a primer is activated by heat from the thin film. The initiator includes a substrate which carries a pair of metallic beam-type leads connected by a thin film bridge which activates the adjacent primer. The beam-type leads are affixed (welded) to a pair of electrical pins which are on adjacent sides of a slot in the header. The entire structure is very cost effective, reliable and provides fast functioning and safety. In addition, a process of manufacturing several bridge initiators at one time on a single wafer is provided.
Claims7
A method of making a detonator utilizing an explosive containing shell having a bridge initiator for activating an adjacent primer and having a header with a pair of electrical pins comprising the following steps:
- providing a header having a slot with adjacent said pins having flat ends;
- fabricating a bridge initiator with a substrate carrying a pair of metallic beam-type leads connected by a thin film bridge;
- placing said initiator in said slot of said header and permanently affixing said beam leads to said flat ends of said pins;
- and completing fabrication of said detonator, including applying said primer to said initiator and placing said header in said explosive containing shell.
A thin film bridge initiator mounted on a header for use in a detonator where an adjacent primer is activated by heat from said thin film bridge comprising:
- a substrate carrying a pair of metallic beam-type leads connected by a thin film bridge;
- a slot in said header for receiving said substrate, said header including a pair of electrical pins adjacent said slot and having flat ends permanently affixed to said pair of beam leads.
Dependencies are inferred from the claim text.