Abstract: The mechanism consists of a one coil spring disposed a spaced distance about the inner circumference of a cylindrical housing; and a lever pivotally attached to said housing. When the device is subjected to centrifugal forces the coil is forced outward towards the inner wall of the cylindrical housing causing the two ends of the coil to be separated. Once separated, the lever may pivot causing one end to contact the inner wall of the cylindrical housing and the second end to pivot away from the inner wall of the cylindrical housing and contact a activating device.

Abstract: A void-sensing fuze whose initiation is deferred until after impact forces have terminated. A safety device safeties the fuze until after the ordnance has fired. Thereafter, upon impact the fuze is committed to fire, but fires only after impact forces have terminated.

Abstract: A self-destruct device for the detonators of spin-stabilized projectiles, wherein a generally crescent-shaped locking lever is pivotably supported on a circular disc-shaped plate which extends perpendicular to the longitudinal projectile axis. In its extended position, the locking lever engages below a spring-loaded percussion sleeve arranged so as to be axially displaceable on the firing pin which, in turn, is latched by means of the hook on a tripping lever which can be swung outwardly against the force of a spring engaging therewith during firing as a result of the centrifugal force exerted thereon caused by the projectile spin. The arm of the tripping lever which sustains the centrifugal force is subordinated in its extended position to a safety support which is fastened on the plate and, subsequent to the outward pivoting of the tripping lever, and also through the centrifugal force, is radially displaceable and thereby releases the tripping lever.

Abstract: Impact with a resistant media at adequate forward velocity and rate of rotation causes a pivoted sector weight to shear a retaining shear pin and rotate quickly, bringing a firing pin on the sector weight into violent contact with a percussion primer and thereby igniting a fuze train or high explosive booster.

Abstract: A hand grenade is provided with a fuze comprising: a firing means, means luding two centrifugally-operated elements movably carried by the grenade housing for arming the firing means, means including an inertia member rotatable relative to the housing and a torsion spring between the inertia member and the housing for spinning the housing to operate the arming elements, and manually-held safety means for preventing arming until the grenade is thrown. Two disclosed embodiments have different arming and firing means with substantially the same spinning means.