Ammunition and explosives – Igniting devices and systems – Arming devices
Patent
1987-06-08
1988-03-15
Jordan, Charles T.
Ammunition and explosives
Igniting devices and systems
Arming devices
102487, F42C 1502, F42C 1534, F42C 1500
Patent
active
047305592
ABSTRACT:
A safetied demolition charge fuze of the kind that upon actuation switches rom a safe to an armed state. Double safety means are provided to ensure the subsistence of a predetermined delay time. A detonator ignitable via a pyrotechnic delay charge is located within a safe-and-arm slide. In the safe state, the detonator is out of alignment with the pyrotechnic charge due to the safe position of the safe-and-arm slide. The latter is retained in the non-aligned, safe position by means of a retainer shaft which is locked in the retaining position by a heat sensitive defense mechanism. After a predetermined time delay, heat transferred from the burning pyrotechnic delay charge cause the latter to unlock and release the retainer shaft which thereupon and by yielding to its compression spring, clears the safe-and-arm slide. In consequence and by the action of springs associated with the slide the latter is urged to the armed position at which the detonator is aligned with the pyrotechnic delay charge. In consequence, when the combustion front in the pyrotechnic delay charge reaches the end close to the detonator the latter is ignited via a booster charge whereby the fuze detonates and causes the explosion of the associated demolition charge.
REFERENCES:
patent: 3049999 (1962-08-01), Sunden
patent: 3683814 (1972-08-01), Bedall et al.
patent: 4493262 (1985-01-01), Hutcheson
patent: 4658725 (1987-04-01), Rudenauer et al.
patent: 4667600 (1987-05-01), Jensen et al.
Jordan Charles T.
The State of Israel, Ministry of Defence, Israel Military Indust
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