Impact fuzes for spinning explosive projectiles and more particularly basedetonatingfuzes of the type equipped with a mechanical auto-destruction device

Claim 1

AN IMPACT FUZE FOR A SPINNING PROPECTILE WHICH COMPRISES, IN COMBINATION, A FUZE CASE FIXED WITH RESPECT TO SAID PROPECTILE AND HAVING A LONGITUDINAL AXIS OF ROTATION, A FIRING PIN SLIDABLE LONGITUDINALLY IN SAID CASE IN THE DIRECTION CORRESPONDING TO FIRING IN RESPONSE TO THE STOPPING OF SAID PROJECTILE BY AN OBSTACLE, SPRING MEANS IN SAID FUZE CASE OPERATIVELY CONNECTED WITH SAID FIRING PIN FOR URGING IT LONGITUDINALLY WITH RESPECT TO SAID CASE IN SAID DIRECTION LOCKING MEANS FOR YIELDINGLY PREVENTING SAID FIRING PIN FROM MOVING IN SAID DIRECTION AS LONG AS THE SPEED OF REVOLUTION OF SAID PROJECTILE IS ABOVE A GIVEN VALUE, SAID LOCKING MEANS COMPRISING, ON THE ONE HAND, A SURFACE OF SAID FUZE CASE FOR REVOLUTION ABOUT SAID AXIS, SAID SURFACE HAVING GENERATRICES OBLIQUE TO SAID AXIS AND CONVERGING IN SAID DIRECTION, AND, ON THE OTHER HAND, ADAPTED TO COOPERATE WITH SAID SURFACE BY SLIDING ENGAGEMENT THEREWITH, ROUNDED CENTRIFUGAL MEMBERS GUIDED IN SAID FIRING PIN RADICALLY AND TRANSVERSELY TO SAID AXIS, WHEREBY AN INWARD MOVEMENT OF SAID CENTRIFUGAL MEMBERS TOWARD THE AXIS OF SAID FUZE CASE TAKES PLACE WHEN THE SPEED OF REVOLUTION OF SAID FUZE CASE ABOUT SAID AXIS DROPS BELOW SAID GIVEN VALUE, AND AN INERTIA PART SLIDABLE LONGITUDINALLY IN SAID FIRING PIN AND HAVING A SURFACE THEREOF, OF REVOLUTION ABOUT SAID AXIS AND CONVERGING IN THE SAME DIRECTION AS SAID FIRST MENTIONED SURFACE, IN ENGAGEMENT WITH SAID CENTRIFUGAL MEMBERS, WHEREBY SAID INERTIA PART IS PUSHED LONGITUDINALLY IN A DIRECTION OPPOSED TO THE FIRST MENTIONED DIRECTION WITH RESPECT TO SAID FUZE CASE IN RESPONSE TO A MOVEMENT OF SAID CENTRIFUGAL MEMBERS TOWARD SAID AXIS.