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Class Information
Number: 376/234
Name: Induced nuclear reactions: processes, systems, and elements > With control of reactor (e.g., control of coolant flow) > By movement of control element or by release of neutron absorbing material > Including shock absorber
Description: Subject matter wherein the control element is provided with a means to retard motion.

Patents under this class:

Patent Number Title Of Patent Date Issued
7627073 Method for designing a nuclear fuel assembly with damping guide tube Dec. 1, 2009
7515674 Tube-in-tube threaded dashpot end plug Apr. 7, 2009
7197103 Control rod drive for a nuclear reactor and method for moving a control rod into a reactor core of a nuclear reactor Mar. 27, 2007
6707870 Method for determining friction forces occurring on an object moving in a guide on an inaccessible site Mar. 16, 2004
6631176 Fuel assembly Oct. 7, 2003
6411668 Guide tube of a nuclear reactor fuel assembly Jun. 25, 2002
6370214 Radiation induced growth indication apparatus for pressurized water reactor nuclear fuel assemblies Apr. 9, 2002
6246741 Fuel assembly Jun. 12, 2001
5889832 Nuclear reactor control cluster having removable rods Mar. 30, 1999
5852644 Guide tube for a nuclear fuel assembly Dec. 22, 1998
5631936 Method and arrangement for compression sealing an omega joint May. 20, 1997
5617457 Pressurized-water reactor with individually adapted pressure distribution in the coolant Apr. 1, 1997
5606583 Guide tube for a nuclear fuel assembly, and a method of manufacturing such a tube Feb. 25, 1997
5533076 Control rod absorber tube with interference fit and viscous dampening between the end plug and absorber rod Jul. 2, 1996
5517536 Magnetic coupling device for control rod drive May. 14, 1996
5428651 Nuclear reactor locking piston drive system and valve assembly Jun. 27, 1995
5416810 Internal equipment for a nuclear reactor having control cluster guides May. 16, 1995
5253277 Vent assembly Oct. 12, 1993
5106572 Centering and fixation device for a cluster guide flange of a core plate of a nuclear reactor Apr. 21, 1992
5076995 Shock damping device for neutron absorbing bars Dec. 31, 1991
5068083 Dashpot construction for a nuclear reactor rod guide thimble Nov. 26, 1991
5034184 Speed control with end cushion for high speed air cylinder Jul. 23, 1991
4961897 Shock absorbing drive mechanism for nuclear reactor absorbing bars Oct. 9, 1990
4885123 Apparatus for handling constituent elements of reactor core Dec. 5, 1989
4762661 Upper end piece for nuclear fuel assemblies Aug. 9, 1988
4752434 Control bar and drive mechanism coupling device Jun. 21, 1988
4714582 Actuating device for linearly moving a cluster of control elements in a nuclear reactor Dec. 22, 1987
4666657 Remotely adjustable intermediate seismic support May. 19, 1987
4659538 Apparatus for limiting the effect of axial hydraulic flow force exerted on fuel assemblies of water-cooled nuclear reactors Apr. 21, 1987
4624826 Control rod velocity limiter Nov. 25, 1986
4587084 Control rod drive May. 6, 1986
4487739 Hydraulic shock absorbers Dec. 11, 1984
4324427 Automobile bumper with adiabatic device Apr. 13, 1982
4271935 Inertial device to prevent and permit motion between two members Jun. 9, 1981
4173511 Control rod blow out protection system Nov. 6, 1979
4104118 Shock absorber Aug. 1, 1978
4090917 Control rod ejection retardation assembly May. 23, 1978
4082610 Snubber assembly for a control rod drive Apr. 4, 1978
4024018 Liquid metal cooled fast breeder nuclear reactors May. 17, 1977
4019954 Safety device for a nuclear reactor and especially a fast reactor Apr. 26, 1977
3989589 Hydraulic drive for control rods Nov. 2, 1976
3980519 Damper mechanism for nuclear reactor control elements Sep. 14, 1976
3959072 Compactable control element assembly for a nuclear reactor May. 25, 1976
3932215 Vertical control rod for rapid and safe shut-off of nuclear reactors Jan. 13, 1976

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