Rotating cage security device for a gyratory projectile
Patent 4510869 Issued on April 16, 1985. Estimated Expiration Date: 
September 22, 2003. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
September 22, 2003. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3585935 Self-destruction type nose impact fuze for spinning projectiles Base fuze for a spinning projectile Delayed arming fuze for a spinning projectile Patent #: 4242963 InventorsApplicationNo. 06/534554 filed on 09/22/1983US Classes:102/240, Spiral band102/237, Centrifugal operated102/245, Centrifugally released latch102/246Deceleration released latchExaminersPrimary: Brown, David H.International ClassesF42C 15/00 (20060101)F42C 15/196 (20060101) Foreign Application Priority Data1982-09-24 FRAbstractThe security device of the invention comprises a movable organ in the interior of a cage mounted for rotation with respect to the body of a projectile, the movable organ being temporarily blocked from such rotation around the axis of gyration by at least one pin ejectable under the action of centrifugal force. Said pin is itself retained by an elastic spiral band enrolled upon the cage and which, as a result of a difference introduced into the speeds of respective rotation of the cage and of the body around the axis of gyration upon the exit of the projectile from the muzzle of the weapon, unwinds to liberate the pin. As a result, the movable organ after a trajectory of many tens of meters after the projectile has left the muzzle of the barrel of the weapon completes the pyrotechnic train which fires the projectile. | |
