Low energy fuses
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United States of America Patent
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-
Jun 9, 1987
Grant Date -
N/A
app pub date -
Jun 25, 1985
filing date -
Jul 10, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A low energy fuse which has a tubular casing that is deformed at at least one end and intermediate its ends to form valve formations. Each valve formation defines a valve that is normally substantially closed and which is opened, in use, by a shock wave. Wall material of the casing may be deformed by heated displaceable forming elements. The deformed wall portions may be fused or bonded together to form an hermetic seal, the fusion or bond being sufficiently weak to be ruptured by the shock wave. Instead the deformed wall portions may merely touch one another or may be spaced slightly apart to define an aperture which is substantially smaller than the cross-sectional area of the casing.
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