Nuclear reactor including energy dissipation device for falling bodies

Claim 1

IN A NUCLEAR REACTOR COOLED BY FLUID FLOW THROUGH THE REACTOR CORE IN AN UPWARD DIRECTION, A SUPPORT STRUCTURE DEFINING AN ANNULAR SEAT THROUGH WHICH THE REACTOR COOLANT FLOWS, A HOLLOW BODY DISPOSED UPRIGHT ON SAID SEAT, A STRUCTURE DEFORMABLE BY IMPACT LOADING CARRIED BY SAID BODY AND DISPOSED TO ABSORB ENERGY BY IMPACT FROM ABOVE SAID BODY, AT LEAST ONE HOOK MEMBER DEPENDING FROM SAID BODY, SAID HOOK MEMBER BEING ELASTICALLY DEFORMABLE TO ENGAGE WITH SAID SEAT AND PLASTICALLY DEFORMABLE TO DISENGAGE FROM SAID SEAT, MEANS TO PERMIT ELASTIC DEFORMATION OF SAID HOOK MEMBER TO ENGAGE THE HOOK MEMBER WITH SAID SEAT, MEANS TO PERMIT PLASTIC DEFORMATION OF SAID HOOK MEMBER TO PERMIT DISENGAGEMENT OF SAID HOOK MEMBER FROM SAID SEAT, AND MEANS TO PREVENT DISENGAGEMENT OF SAID HOOK MEMBER FROM SAID SEAT BY ELASTIC DEFORMATION OF SAID HOOK MEMBER.