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Dynamic armed grenade

Image Number 2 for United States Patent #4773330.

The present invention provides a grenade with dynamic arming having a body and a fuse, in which arming of the fuse is made dependent on the dynamic unwinding of a ribbon which surrounds the fuse and which is weighted with an inertia block at the end of winding, wherein said inertia weight is held in position, before the grenade is thrown, by a long safety piece, called spoon, said weight is not secured to the spoon and, at the very beginning of the trajectory of the grenade, the inertia causes both ejection of the spoon and displacement of the inertia weight, this displacement causing dynamic unwinding of the ribbon and arming of the fuse.

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