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Class Information
Number: 976/DIG.81
Name: Nuclear technology > Reactor fuel elements and their assemblies; selection of substances for use as reactor fuel elements [g21c-3/00] > Assemblies of number of fuel elements in the form of a rigid unit [g21c-3/30] > Bundles of parallel pin-, rod-, or tube-shaped fuel elements [g21c-3/32] > Spacer grids; other spacer devices [g21c-3/34] > Fabrication of spacer grids [g21c-3/34f]
Description:










Patents under this class:

Patent Number Title Of Patent Date Issued
5406599 Spacer grid cell fixture system Apr. 11, 1995
5400373 Assembly fixture and method for fabricating grids Mar. 21, 1995
5398264 Grid welding fixture for a spacer grid Mar. 14, 1995
5110539 Spacer grid assembly fixture May. 5, 1992
5032351 Modified cross point spacer apparatus and construction Jul. 16, 1991
5024426 Bimetallic spring member for radiation environment Jun. 18, 1991
4931615 Apparatus for machining intricate feature cuts in thin walled tubular parts Jun. 5, 1990
4924586 Automated forming apparatus May. 15, 1990
4918710 Fabrication procedure for a cross-bracing grid for a fuel assembly of a nuclear reaction Apr. 17, 1990
4913707 Automated assembly apparatus Apr. 3, 1990
4873051 Nuclear fuel grid outer strap Oct. 10, 1989
4869865 Method of manufacturing nuclear fuel bundle spacers Sep. 26, 1989
4725402 Welded nuclear fuel grid and method Feb. 16, 1988
4717427 Method of manufacturing zirconium alloy plates Jan. 5, 1988
4711436 Grid assembly fixture, retention strap and method Dec. 8, 1987
4709909 Retention strap in a grid assembly fixture Dec. 1, 1987
4680443 Process and apparatus for electron beam welding grids for a nuclear fuel assembly Jul. 14, 1987
4678632 Nuclear fuel assembly grid with predetermined grain orientation Jul. 7, 1987
4652421 Outer grid strap protruding spring repair apparatus Mar. 24, 1987
4646431 Device for positioning hair pin springs on plates, more especially for fuel assembly grids Mar. 3, 1987
4636606 Method and apparatus for producing a reactor spacing grid by pulse laser welding Jan. 13, 1987
4556776 Welding fixture for nuclear reactor fuel assembly grid Dec. 3, 1985
4539738 Strap and vane positioning fixture for fuel rod grid and method Sep. 10, 1985
4530146 Process and apparatus for assembling the strips of a grille Jul. 23, 1985
4522330 Grid and sleeves welding fixture and method Jun. 11, 1985
4519593 Grid assembly fixture, retention strap May. 28, 1985
4518843 Laser lens and light assembly May. 21, 1985
4492844 Welding plates for a fuel rod grid Jan. 8, 1985
4427622 Alignment tool for spacers of nuclear reactor fuel assemblies Jan. 24, 1984
4411862 Spacer grating for fuel element in a nuclear reactor Oct. 25, 1983
4101752 Process for welding corner cells in fuel assembly grids Jul. 18, 1978
4027868 Welding jigs Jun. 7, 1977
4007544 Constant load probe system for coordinate measurement machines Feb. 15, 1977











 
 
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