Delay blasting cap

Details Delay blasting cap Delay blasting cap

1979-09-21

1983-01-25

Tudor, Harold J.

Ammunition and explosives

Igniting devices and systems

Electrical primer or ignitor

10220214, F42B 316

Patent

active

043697089

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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patent: 2767655 (1956-10-01), Seavey
patent: 2771033 (1956-11-01), Lewis et al.
patent: 2773447 (1956-12-01), Hall et al.
patent: 2878752 (1959-03-01), Johnson et al.
patent: 2991714 (1961-07-01), Noddin
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patent: 3021786 (1962-02-01), Miller et al.
patent: 3188914 (1965-06-01), Dahl
patent: 3556009 (1971-01-01), Thatcher
patent: 3759183 (1973-09-01), Apstein
patent: 3817181 (1974-06-01), Persson et al.
patent: 4239004 (1980-12-01), Day et al.

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