Back to results
US 4,449,456 AGranted
Safety device for a projectile
AssigneeA/S Raufoss Ammunisjonsfabrikker
InventorsMorten Foss, Kaare R. Strandli
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeA/S Raufoss Ammunisjonsfabrikker
InventorsMorten Foss, Kaare R. Strandli
Estimating the term…
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.
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 behind the ignition charge, said device comprising two discs having concentric apertures and being situated behind the ignition charge, the disc nearer the ignition charge being called the foremost disc and the disc further from the ignition charge being called the rearmost disc, each of said foremost and rearmost discs having an aperture extending therethrough, wherein means adapted to make the barrier comprise a plug situated in the aperture through the foremost disc, and a split ring which is held together by a spring supports said plug, said split ring being supported by the rearmost disc, and at least one portion of said plug is adapted to seal the aperture in the foremost disc when being exposed to pressure developed by the ignition charge prior to arming of the projectile.
Dependencies are inferred from the claim text.