Explosive logic clock

Details Explosive logic clock Explosive logic clock

1981-12-23

1991-03-12

Brown, David H.

Ammunition and explosives

Igniting devices and systems

Fuse

102305, 102701, F42B 310, F42B 1500, F42C 1908

Patent

active

049989634

ABSTRACT:
An explosive network forming an explosive logic clock for opening a time window during which a set of theoretically identical detonators must fire. The explosive logic clock also examines the first detonation to determine whether or not it is premature before propagating the detonations on to the explosive safing and arming network. The clock is constructed with a plurality of detonators, each detonator having a first branch of a branched outlet trail leading to a detonator time delay trail leading further to a logic switch. The logic switches are interconnected such that the detonation signal from the first detonator to detonate is extinguished in that detonator's logic switch while the remaining logic switches are set by the first detonation signal to allow propagation of their own detonation signals on to the safing/arming network. A second branch of the branched outlet trail simultaneously propagates the detonation signal from the first detonator to a clock time delay which delays the first detonation signal and opens the time window. When the delay imposed by the clock time delay expires, the first detonation signal propagates to a clock logic switch which is interconnected with and set by the detonator logic switches to allow propagation of the first detonation signal. When a second detonation signal is generated, it passes down the detonator time delay and through the detonator logic switch to the clock logic switch. When the second detonation occurs within the time window, the clock logic switch is set by the second detonation signal prior to the arrival of the first detonation signal, which is then allowed to propagate through the clock logic switch. However, when the second detonation occurs outside the time window, the first detonation signal arrives at the unset clock logic switch prior to the arrival of the second detonation signal and is extinguished.

REFERENCES:
patent: 3035518 (1962-05-01), Coursen
patent: 3430564 (1969-03-01), Silvia et al.
patent: 3496868 (1970-02-01), Silvia et al.
patent: 3669021 (1972-06-01), Spencer et al.
patent: 3753402 (1973-08-01), Menz et al.
patent: 3768409 (1973-10-01), Menz et al.
patent: 3973499 (1976-08-01), Anderson et al.

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