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Class Information
Number: 976/DIG.124
Name: Nuclear technology > Control of nuclear reaction [g21c-7/00] > By application of neutron-absorbing material (i.e., material with absorption cross section very much in excess of reflection cross section) [g21c-7/06] > By displacement of solid control elements (e.g., control rods) [g21c-7/08] > Construction of control elements [g21c-7/10] > Cluster or spider control rods [g21c-7/10f]

Patents under this class:

Patent Number Title Of Patent Date Issued
4928291 Control cluster provided with removable control elements for a nuclear fuel reactor May. 22, 1990
4902468 Control rod support having planar wear surfaces Feb. 20, 1990
4888151 Reconstitutable control assembly having removable control rods with detachable split upper end plugs Dec. 19, 1989
4863678 Rod cluster having improved vane configuration Sep. 5, 1989
4855100 Reconstitutable control rod spider assembly Aug. 8, 1989
4836977 Standardized reduced length burnable absorber rods for a nuclear reactor Jun. 6, 1989
4832899 Mechanical spectral shift reactor May. 23, 1989
4820475 Burnable absorber rod push out attachment joint Apr. 11, 1989
4820058 Control rod end plug with a stabilizing configuration Apr. 11, 1989
4798699 Wear sleeve for a control rod end plug Jan. 17, 1989
4762661 Upper end piece for nuclear fuel assemblies Aug. 9, 1988
4755346 Device for displacing and latching a cluster of control elements in a nuclear reactor Jul. 5, 1988
4728480 Apparatus and method for refurbishing a spectral shift mechanism for a nuclear reactor fuel assembly Mar. 1, 1988
4728487 Standardized reduced length burnable absorber rods for a nuclear reactor Mar. 1, 1988
4716008 Device for control of the core of a nuclear reactor Dec. 29, 1987
4716007 Spectral shift reactor Dec. 29, 1987
4716006 Spectral shift reactor control method Dec. 29, 1987
4714582 Actuating device for linearly moving a cluster of control elements in a nuclear reactor Dec. 22, 1987
4711756 Control rod displacement Dec. 8, 1987
4707331 Top end support for water displacement rod guides of pressurized water reactor Nov. 17, 1987
4687628 Flexible rod guide support structure for inner barrel assembly of pressurized water reactor Aug. 18, 1987
4687620 Spectral shift reactor control method Aug. 18, 1987
4683107 Method and device for replacing neutron absorber rods Jul. 28, 1987
4683103 Spectral shift apparatus and method for a nuclear reactor fuel assembly Jul. 28, 1987
4683102 Device for operating a cluster of neutron absorber elements in a pressurized water nuclear reactor Jul. 28, 1987
4681728 Nuclear reactor Jul. 21, 1987
4642216 Control rod cluster arrangement Feb. 10, 1987
4562038 Device for guiding a control cluster in a nuclear reactor Dec. 31, 1985
4446099 Device for protecting control cluster actuating mechanisms during the testing of a nuclear reactor May. 1, 1984
4432934 Displacer rod for use in a mechanical spectral shift reactor Feb. 21, 1984
4432930 Spectral shift reactor control method Feb. 21, 1984
4418462 Method of assembling and disassembling a control component structure Dec. 6, 1983
4381283 Control component structure Apr. 26, 1983
4355449 Method of assembling and disassembling a control component structure Oct. 26, 1982
4314885 Industrial technique Feb. 9, 1982
4231843 Guide tube flow diffuser Nov. 4, 1980
4208247 Neutron source Jun. 17, 1980
4035230 Shock buffer for nuclear control assembly Jul. 12, 1977
3930938 Attachment and locking of finger control rods in a nuclear reactor of BWR type Jan. 6, 1976

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