After-firing safety device in a projectile with percussion fuze

Details After-firing safety device in a projectile with percussion fuze After-firing safety device in a projectile with percussion fuze

F - Mech Eng,Light,Heat,Weapons

42

C

102/20

F42C 14/00 (2006.01) F42C 1/04 (2006.01) F42C 15/20 (2006.01) F42C 15/23 (2006.01)

Patent

CA 1320073

ABSTRACT OF THE DISCLOSURE: An after-firing safety device in a projectile with percussion fuze includes a spiral spring set having at least three springs wound up in series with respectively opposite directions. The spring set, maintained under tension by a cage, starts to uncoil as soon as the cage slides off the spiral spring set on account of the acceleration of the projectile during firing. The time elapsing until a central aperture has been entirely vacated depends on the number of springs, the spring lengh, the spring tension, and the friction characteristic. The after- firing safety device is equally well suited for spinning projectiles as well as nonspinning projectiles.

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