Ammunition and explosives – Igniting devices and systems – Arming devices
Patent
1982-01-26
1984-05-22
Brown, David H.
Ammunition and explosives
Igniting devices and systems
Arming devices
102229, 102245, F42C 1522, F42C 1534
Patent
active
044494564
ABSTRACT:
A safety device for a projectile, adapted to make a barrier between an ignition charge in the forward end of the projectile and one or more incendiary and/or explosive charges situated behind the ignition charge. The device comprises two discs having concentric apertures therethrough, situated behind the ignition charge. A plug constituting the barrier is situated in the aperture in the foremost disc, and a split ring which is held together by a spring supports the plug, the split ring being supported by the rearmost disc. The plug comprises at least one portion adapted to seal the aperture in the foremost disc when being exposed to pressure developed by firing of the ignition charge prior to arming of the projectile. Arming takes place only when the projectile reaches a rotational velocity sufficient to open the split ring because of the centrifugal forces, whereby these forces exceed the resistance of the spring. In this condition the plug is allowed to pass rearwardly and to impact against the incendiary and/or explosive charge or charges, and the combustion gases from the ignition charge are also allowed to move together with the plug, whereby ignition of the other charge or charges takes place.
REFERENCES:
patent: 2164797 (1939-07-01), Birkigt
patent: 2362987 (1944-11-01), Church et al.
patent: 3076410 (1963-02-01), Guerne
patent: 3450048 (1969-06-01), Guerne
patent: 3750589 (1973-08-01), Egli et al.
patent: 4223608 (1980-09-01), Backstein et al.
patent: 4242963 (1981-01-01), Ziemba
Foss Morten
Strandli Kaare R.
A/S Raufoss Ammunisjonsfabrikker
Brown David H.
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