Device for handling fuel assemblies within a nuclear reactor core

Claim 1

A DEVICE FOR HANDLING FUEL ASSEMBLIES WITHIN THE CORE OF A NUCLEAR REACTOR, SAID DEVICE BEING CONSTITUTED BY A GROUP OF FUEL ASSEMBLIES PLACED IN ADJACENT RELATION IN THE VERTICAL POSITION AND SURROUNDED BY A REACTOR CONTAINMENT VALUT OR VESSEL STRUCTURE WHICH PROVIDES SUITABLE PROTECTION AGAINST RADIATIONS, WHEREIN SAID DEVICE COMPRISES TWO ARMS HAVING SYNCHRONIZED MOVEMENTS, THE FIRST ARM BEING CONSTITUTED BY A VERTICAL TUBULAR PORTION, A RIGHT-ANGELED HORIZONTAL SUPPORT BRACKET FIXED AT THE END OF THE TUBULAR PORTION WHICH PENETRATES INTO THE REACTOR VESSEL STRUCTURE AND A VERTICAL SLEEVE F OR GUIDING A HANDLING GRAB WHICH IS PROVIDED AT THE OPPOSITE END OF THE SUPPORT BRACKET WITH RESPECT TO THE FIRST ARM, THE SECOND ARM BBEING PROVVIDED WITH A VERTICAL TUBULAR PORTION, A RIGHT-ANGLED HORIZONTAL SUPPORT BRACKET DISPOSED IN THE VERTICAL PLANE CONTAINING THE SUPPORT BRACKET OF THE FIRST ARM, A VERTICAL CYLINDRICAL GUIDE TUBE WHICH IS COAXIAL WITH THE GUIDE SLEEVE OF SAID GRAB, THE TUBULAR PORTIONS OF TWO ARMS BEING RIGIDLY FIXED TO EACH OTHER BY MEANS OF A SLIDING COUPLING AND ENDOWED BY MEANS OF A DIFFERENTIAL DRIVE STYSTEM WITH MOVEMENTS FOR PRODUCING THE SAME EFFORT BUT APPLIED IN THE OPPOSITE DIRECTION IN ORDER THAT THE LATERAL REACTION OF THE GRAB OF THE FIRST ARM ON A FUEL ASSEMBLY SHOULD BE EQUAL AND OPPOSITE TO THE LATERAL REACTION OF THE CYLINDRICAL GUIDE TUBE OF THE SECOND ARM ON THE SAME FUEL ASSEMBLY, THE DIFFERENTIAL STYSTEM FOR ACTUATING THE TWO ARMS COMPRISES A COMMON DRIVING MOTOR FOR A DRIVING RING-GEAR WHICH CARRIES TWO PLANETARY PINIONSS DISPOSED IN MESHING ENGAGEMENTS WITH TWO SUN-GEARS RIGIDLY FIXED TO TWO DRIVEN OUTPUT SHAFTS WHICH ARE DISPOSED IN THE LINE OF EXTENSION OF EACH OTHER AND PROVIDED WITH TWO ELEMENTS FOR DIRECT MOTION TRANSMISSION TO THE VERTICAL TUBULAR PORTIONS OF THE TWO ARMS.

Claim 2

A DEVICE FOR HANDLING FUEL ASSEMBLIES WITHIN THE CORE OF A NUCLEAR REACTOR, SAID DEVICE BEING CONSTITUTED BY A GROUP OF FUEL ASSEMBLIES PLACED IN ADJACENT RELATION IN THE VERTICAL POSITION AND SURROUNDED BY A REACTOR CONTAINMENT VALUT OR VESSEL STRUCTURE WHICH PROVIDES SUITABLE PROTECTION AGAINST RADIATIONS, WHEREIN SAID DEVICE COMPRISES TWO ARMS HAVING SYNCHRONIZED MOVEMENTS, THE FIRST ARM BEING CONSTITUTED BY A VERTICAL TUBULAR PORTION, A RIGHT-ANGELED HORIZONTAL SUPPORT BRACKET FIXED AT THE END OF THE TUBULAR PORTION WHICH PENETRATES INTO THE REACTOR VESSEL STRUCTURE AND A VERTICAL SLEEVE F OR GUIDING A HANDLING GRAB WHICH IS PROVIDED AT THE OPPOSITE END OF THE SUPPORT BRACKET WITH RESPECT TO THE FIRST ARM, THE SECOND ARM BBEING PROVVIDED WITH A VERTICAL TUBULAR PORTION, A RIGHT-ANGLED HORIZONTAL SUPPORT BRACKET DISPOSED IN THE VERTICAL PLANE CONTAINING THE SUPPORT BRACKET OF THE FIRST ARM, A VERTICAL CYLINDRICAL GUIDE TUBE WHICH IS COAXIAL WITH THE GUIDE SLEEVE OF SAID GRAB, THE TUBULAR PORTIONS OF TWO ARMS BEING RIGIDLY FIXED TO EACH OTHER BY MEANS OF A SLIDING COUPLING AND ENDOWED BY MEANS OF A DIFFERENTIAL DRIVE STYSTEM WITH MOVEMENTS FOR PRODUCING THE SAME EFFORT BUT APPLIED IN THE OPPOSITE DIRECTION IN ORDER THAT THE LATERAL REACTION OF THE GRAB OF THE FIRST ARM ON A FUEL ASSEMBLY SHOULD BE EQUAL AND OPPOSITE TO THE LATERAL REACTION OF THE CYLINDRICAL GUIDE TUBE OF THE SECOND ARM ON THE SAME FUEL ASSEMBLY, THE DIFFERENTIAL STYSTEM FOR ACTUATING THE TWO ARMS COMPRISES A COMMON DRIVING MOTOR FOR A DRIVING RING-GEAR WHICH CARRIES TWO PLANETARY PINIONSS DISPOSED IN MESHING ENGAGEMENTS WITH TWO SUN-GEARS RIGIDLY FIXED TO TWO DRIVEN OUTPUT SHAFTS WHICH ARE DISPOSED IN THE LINE OF EXTENSION OF EACH OTHER AND PROVIDED WITH TWO ELEMENTS FOR DIRECT MOTION TRANSMISSION TO THE VERTICAL TUBULAR PORTIONS OF THE TWO ARMS.