Fuel element for nuclear reactor

Claim 1

A FUEL ELEMENT FOR A NUCLEAR REACTOR COMPRISING A SHEET OF CLAD URANIUM OF SPIRAL FORM, THE SPIRAL HAVING SEVERAL CONVOLUTIONS, ONE EDGE OF THE SHEET BEING AT THE CENTER OF THE SPIRAL AND THE OPPOSITE EDGE OF THE SHEET BEING IN THE EXTERNAL SURFACE OF THE SPRIAL, A CORE ROD RIGIDLY SECURED TO SAID ONE EDGE OF THE SHEET AND EXTENDING PARALLEL TO THE AXIS OF THE SPIRAL, A PLURLITY OF AXIALLY-EXTENDING SPACER RODS RIGIDLY SECURED TO THE SHEET BETWEEN THE CONVOLUTIONS OF THE SPIRAL THEREBY TO HOLD THE CONVOLUTIONS IN SPACED RELATION, WHEREBY COOLING FLUID OF THE REACTOR CAN FLOW BETWEEN THE CONVOLUTIONS OF THE SPIRAL, A PLURALITY OF CIRCUMFERENTIALLY-SPACED RODS EXTENDING AXIALLY OF THE SPIRAL AND SECURED TO THE EXTERNAL SURFACE OF THE OUTERMOST CONVOLUTION OF THE SPIRAL, SAID CORE ROD AND SAID CIRCUMFERENTIALLY-SPACED RODS PROJECTING AXIALLY BEYOND THE ENDS OF THE SPIRAL SHEET, AND A WEDGE SECTION PIECE SECURED TO SAID OPPOSITE EDGE OF THE SHEET AND AFFORDING THE CIRCUMFERENTIAL CONTINUATION OF THE OUTERMOST CONVOLUTION OF THE SPIRAL, SAID WEDGE SECTION PIECE EXTENDING AT ITS ENDS AXIALLY BEYOND THE ENDS OF THE SPIRAL SHEET, ONE END OF THE WEDGE PIECE HAVING A NOTCH THEREIN AND THE OPPOSITE END HAVING THEREON AN AXIALLY-PROJECTING TONGUE.