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Class Information
Number: 976/DIG.79
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] > Spacer grids wherein each cell has a polygonal (e.g., square cross section) ; cells formed of assembled metallic nonintersecting strips [g21c-3/34d] > Polygonal cells formed of intersecting strips [g21c-3/34d2] > The cells being provided with fuel element supporting members [g21c-3/34d2a] > Supporting members formed only of elements fixed on the strips (e.g., by welding) [g21c-3/34d2a4]

Patents under this class:

Patent Number Title Of Patent Date Issued
4885127 Nuclear fuel rod support grid with attachable spring and dimple support spacers Dec. 5, 1989
4844862 Hairpin spring for nuclear fuel assembly and grid including such springs Jul. 4, 1989
4839136 Spacer for nuclear fuel rods Jun. 13, 1989
4735769 Nuclear reactor fuel assembly Apr. 5, 1988
4666663 Nuclear reactor fuel assembly May. 19, 1987
4578240 Nuclear reactor fuel assembly spacer grid Mar. 25, 1986
4544522 Nuclear fuel assembly spacer Oct. 1, 1985
4521374 Fuel grid with sleeves welded in notched grid straps Jun. 4, 1985
4389369 Bi-metallic grid for a nuclear reactor fuel assembly Jun. 21, 1983
4364902 Device for fixing a spring to a spacing grid for fuel elements of nuclear reactors Dec. 21, 1982
4357298 Nuclear fuel assembly space arrangement Nov. 2, 1982
4312705 Spacer for nuclear reactor fuel assemblies Jan. 26, 1982
4221636 Grids for bringing about the spacing of a group of sheathed fuel rods in a nuclear reactor Sep. 9, 1980
4152205 Spacer support for water-cooled nuclear reactor fuel elements May. 1, 1979
4007899 Lattice construction Feb. 15, 1977
3994779 Nuclear reactor fuel rod spacer Nov. 30, 1976
3966550 Reactor fuel assemblies Jun. 29, 1976
3944467 Spacer for fuel rods in nuclear fuel elements Mar. 16, 1976

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