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Class Information
Number: 976/DIG.78
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 by deformations in the intersecting strips [g21c-3/34d2a2]
Description:










Patents under this class:
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Patent Number Title Of Patent Date Issued
4923669 Nuclear fuel rod grid spring and dimple structures having chamfered edges for reduced pressure drop May. 8, 1990
4897241 Anti-bow grid for nuclear fuel assembly Jan. 30, 1990
4895698 Nuclear fuel rod grip with modified diagonal spring structures Jan. 23, 1990
4879090 Split vaned nuclear fuel assembly grid Nov. 7, 1989
4849161 Debris-resistant fuel assembly Jul. 18, 1989
4844860 Support grid with integral vanes Jul. 4, 1989
4803043 Nuclear fuel rod grid spring and dimple structures Feb. 7, 1989
4765949 Spacing grid for nuclear fuel assembly Aug. 23, 1988
4762669 Nuclear reactor core containing fuel assemblies positioned adjacent core baffle structure having annular anti-vibration grids Aug. 9, 1988
4740350 BWR fuel assembly having fuel rod spacers axially positioned by exterior springs Apr. 26, 1988
4726926 Mixing grid Feb. 23, 1988
4714585 Interlocking egg-crate type grid assembly Dec. 22, 1987
4708845 BWR fuel assembly with improved spacer and fuel bundle design for enhanced thermal-hydraulic performance Nov. 24, 1987
4702881 Nuclear reactor spacer grid Oct. 27, 1987
4692302 Coolant flow mixer grid for a nuclear reactor fuel assembly Sep. 8, 1987
4659541 Nuclear fuel rod support grid with improved multiple dimple arrangement Apr. 21, 1987
4585616 Nuclear fuel spacer grid with improved outer straps Apr. 29, 1986
4585615 Nuclear fuel spacer grid with improved grid straps Apr. 29, 1986
4579711 Fuel assembly spacer Apr. 1, 1986
4576786 Partial grid for a nuclear reactor fuel assembly Mar. 18, 1986
4570883 Tube support grid Feb. 18, 1986
4474730 Nuclear fuel spacer grid Oct. 2, 1984
4426355 Spacer grid for nuclear fuel assembly Jan. 17, 1984
4396573 Space grate for fuel-elements of nuclear reactors Aug. 2, 1983
4388269 Spacer grid corner gusset Jun. 14, 1983
4364901 Anti-fly-off device Dec. 21, 1982
4295935 Bimetallic spacer means for a nuclear fuel assembly Oct. 20, 1981
4268356 Nuclear reactor fuel assembly grid May. 19, 1981
4246783 Spring-force measuring device Jan. 27, 1981
4224107 Spacer grids for a nuclear reactor fuel assembly Sep. 23, 1980
RE30247 Means for supporting fuel elements in a nuclear reactor Apr. 1, 1980
4175004 Fuel assembly guide tube Nov. 20, 1979
4175003 Grid for nuclear reactor fuel assemblies Nov. 20, 1979
4165256 Fuel element grid plate with corrugation and bosses Aug. 21, 1979
RE30065 Nuclear reactor Aug. 7, 1979
4163690 Nuclear reactor fuel assembly spacer grid Aug. 7, 1979
4160477 Spacer grid for parallel cylindrical tubes Jul. 10, 1979
4155807 Core and transition fuel assembly for a nuclear reactor May. 22, 1979
4137125 Method of welding nuclear reactor fuel assemblies Jan. 30, 1979
4135972 Nuclear reactor spacer assembly Jan. 23, 1979
4125434 Nuclear reactor-fuel element Nov. 14, 1978
4125435 Grid lattice with sliding strap Nov. 14, 1978
4124444 Nuclear fuel rod supporting arrangement Nov. 7, 1978
4111348 Grid braze application mold Sep. 5, 1978
4090918 Spacer structure May. 23, 1978
4089741 Mixing vane grid spacer May. 16, 1978
4077843 Nuclear reactor spring strip grid spacer Mar. 7, 1978
4059483 Nuclear fuel assembly seismic amplitude limiter Nov. 22, 1977
4059484 Hybrid nuclear fuel assembly with reduced linear heat generation rates Nov. 22, 1977
4058436 Nuclear reactor seismic fuel assembly grid Nov. 15, 1977

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