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Class Information
Number: 976/DIG.244
Name: Nuclear technology > Arrangements for treating, for handling, or for facilitating the handling of, fuel or other materials which are used within the reactor (e.g., within its pressure vessel) [g21c-19/00]

Sub-classes under this class:

Class Number Class Name Patents
976/DIG.258 Apparatus for bringing fuel elements to the reactor charge area (e.g., from a storage place) [g21c-19/18] 23
976/DIG.272 Apparatus for removing radioactive objects or materials from the reactor discharge area (e.g., to a storage place); apparatus for handling radioactive objects or materials within a storage place or removing them therefrom [g21c-19/32] *** (disposal of waste material dig. 375+) 44
976/DIG.273 Apparatus or processes for removing canning or casings from fuel; separation of fuel and jacket material; also fuel elements, perforation (e.g., for sampling); separation of fuel elements and fuel element-jackets in pieces; removal of end closures [g21c-19/34] *** (shielded cells dig. 355+) 36
976/DIG.265 Arrangements for introducing fluent material into the reactor core; arrangements for removing fluent material from the reactor core [g21c-19/28] *** (pumping coolant dig. 199+ and 294) 11
976/DIG.259 Arrangements for introducing object into the pressure vessel; arrangements for handling objects within the pressure vessel; arrangements for removing objects from the pressure vessel [g21c-19/20] 36
976/DIG.276 Arrangements for preventing occurence of critical conditions (e.g., during storage) [g21c-19/40] 42
976/DIG.264 Arrangements for removing jammed or damaged fuel elements or control elements; arrangements for moving broken parts thereof [g21c-19/26] 18
976/DIG.257 Articulated or telescopic chutes or tubes for the connection to channels in the reactor core [g21c-19/16] 11
976/DIG.256 Characterized by their adaptation for use with horizontal channels in the reactor core [g21c-19/14] 3
976/DIG.245 Details of handling arrangements [g21c-19/02] 42
976/DIG.277 Reprocessing of irradiated fuel [g21c-19/42] 6

Patents under this class:

Patent Number Title Of Patent Date Issued
8660231 Storage rack arrangement for the storage of nuclear fuel elements Feb. 25, 2014
8495814 Reactor installation and removal tools Jul. 30, 2013
7504079 Vol-oxidizer for spent nuclear fuel Mar. 17, 2009
5064606 Channel box removing apparatus Nov. 12, 1991
5053187 Apparatus for positioning a mast for the inspection and/or repair of a core shroud of a water-cooled nuclear reactor Oct. 1, 1991
5037604 Coffer dam for temporary shielding of reactor vessel internals Aug. 6, 1991
5019325 Method for removing and installing a control rod drive May. 28, 1991
5009836 Method for temporary shielding of reactor vessel internals Apr. 23, 1991
4973443 System for removing and installing a control rod drive Nov. 27, 1990
4913559 Fuel assembly alignment pin straightening method Apr. 3, 1990
4910823 Cleaning mechanism for penetration interfaces in nuclear pressure vessels Mar. 27, 1990
4859409 Reactor vessel lower internals temporary support Aug. 22, 1989
4859404 Reactor vessel internals storage area arrangement Aug. 22, 1989
4824632 Fuel assembly alignment pin straightening device Apr. 25, 1989
4801422 Apparatus for installing and removing a control rod drive in a nuclear reactor Jan. 31, 1989
4778645 Pressurized water reactor having disconnectable two-piece drive rod assemblies, and related methods of assembly and maintenance operations Oct. 18, 1988
4762670 Cleaning apparatus for atomic reactor control rod driving means (CRD) Aug. 9, 1988
4720369 Device for cleaning the guide tubes of the means of measuring neutron fluxes in a pressurized-water nuclear reactor Jan. 19, 1988
4683108 Locking screw apparatus and method for underwater remote replacement Jul. 28, 1987
4675149 Jet pump beam holder/positioner tool Jun. 23, 1987
4650639 Method and apparatus for eliminating leakage spaces between the partitions surrounding the core of a pressurized water nuclear reactor Mar. 17, 1987
4650638 Method for eliminating leakage spaces between the partitions surrounding the core of a pressurized water nuclear reactor Mar. 17, 1987
4649019 Draining down of a nuclear steam generating system Mar. 10, 1987
4618169 Connecting mechanism for pole members Oct. 21, 1986
4585611 Undervessel arrangement Apr. 29, 1986
4572710 Method and apparatus for changing filters in nuclear power stations Feb. 25, 1986
4534932 Apparatus for removing cladding material from bottom portion of control rod guide tube of nuclear reactor Aug. 13, 1985
4377551 Incore cutting machine Mar. 22, 1983
4192715 Fuel assembly handling system of nuclear reactor Mar. 11, 1980
4183785 Method for positioning moderator structure for the core of a molten-salt reactor Jan. 15, 1980
4134789 Method for refuelling a nuclear reactor and device for carrying out said method Jan. 16, 1979
4102740 Moderator structure for the core of a molten salt reactor Jul. 25, 1978
4045283 Control rod and/or instrument tree assembly Aug. 30, 1977
4033815 Nuclear reactors Jul. 5, 1977
3984084 Assembly apparatus for nuclear reactors Oct. 5, 1976
3967741 Device for moving fuel elements and control bars from one place to another place in a core reactor Jul. 6, 1976
3941259 Device for relocating fuel elements and control rods in a core reactor Mar. 2, 1976

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