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Class Information
Number: 976/DIG.77
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]

Sub-classes under this class:

Class Number Class Name Patents
976/DIG.78 Supporting members formed only by deformations in the intersecting strips [g21c-3/34d2a2] 57
976/DIG.79 Supporting members formed only of elements fixed on the strips (e.g., by welding) [g21c-3/34d2a4] 18

Patents under this class:

Patent Number Title Of Patent Date Issued
4775509 Spacer grid for a nuclear fuel assembly Oct. 4, 1988
4756878 Grid spacer and method of making same Jul. 12, 1988
4659542 Grid structure for nuclear fuel assembly Apr. 21, 1987
4578239 Spacer for fuel assemblies of water-cooled nuclear reactors Mar. 25, 1986
4411862 Spacer grating for fuel element in a nuclear reactor Oct. 25, 1983
4314884 Nuclear fuel assembly Feb. 9, 1982

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