Delay blasting cap
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United States of America Patent
Stats
-
Jan 25, 1983
Grant Date -
N/A
app pub date -
Sep 21, 1979
filing date -
Sep 21, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A delay blasting cap having improved uniformity and predictability of delay time, and less susceptible to timing change as a result of a change in the medium or temperature surrounding the cap, has a polyolefin or polyfluorocarbon carrier capsule or tube for the delay charge, and preferably a rigid metal capsule holding the delay charge in place. Preferably, the delay carrier is a polyethylene capsule, which inhibits the priming charge from penetrating into the delay charge during the assembling of the cap.
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