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Class Information
Number: 976/DIG.167
Name: Nuclear technology > Pressure vessels; containment vessels [g21c-13/00] *** (chemical or physical processes b01j-3/00; pressure vessels in general f16j-12/00) > Details (e.g., seals, supporting constructions, ventillating arrangements, tube joints with a vessel wall) [g21c-13/02]
Description:










Sub-classes under this class:

Class Number Class Name Patents
976/DIG.174 Arrangements for expansion and contraction [g21c-13/04] 8
976/DIG.175 Sealing plugs [g21c-13/06] 25
976/DIG.169 Seals (e.g., for pressure vessels or containers [g21c-13/02d] 34
976/DIG.168 Supporting constructions for pressure vessels or containers [g21c-13/02b] 45
976/DIG.173 Tube crossings through a vessel wall [g21c-13/02h] 38
976/DIG.171 Tube joints with a vessel wall (e.g., taking into account thermal stresses) [g21c-13/02f] 15
976/DIG.172 Ventillating arrangements [g21c-13/02g] 5


Patents under this class:

Patent Number Title Of Patent Date Issued
4976914 Device for removing a blower from a gas-cooled nuclear reactor Dec. 11, 1990
4911880 Nuclear reactor having a unitary pressure container structure Mar. 27, 1990
4826652 Low capacity nuclear reactor housed underground in the cavity of a cylindrical pressure vessel May. 2, 1989
4818469 Seal for turning valve bodies, in particular for valves in nuclear-engineering plants Apr. 4, 1989
4788033 Calandria Nov. 29, 1988
4786461 Reactor internals hold down spring Nov. 22, 1988
4780270 Passive shut-down heat removal system Oct. 25, 1988
4752441 Modular former for inner barrel assembly of pressurized water reactor Jun. 21, 1988
4735421 Sealing apparatus utilizing a conformable member Apr. 5, 1988
4734250 Concentric pipe loop arrangement for pressurized water nuclear reactors Mar. 29, 1988
4716010 Tooling apparatus for modifying nuclear reactors Dec. 29, 1987
4707327 Container system for a high-temperature nuclear reactor Nov. 17, 1987
4696792 Nuclear reactor coolant recirculation Sep. 29, 1987
4690795 Emergency transfer tube closure and process for sealing transfer tube under emergency conditions Sep. 1, 1987
4671923 Holddown spring retention assembly Jun. 9, 1987
4654185 Deep beam reactor vessel head and nuclear reactor including same Mar. 31, 1987
4650638 Method for eliminating leakage spaces between the partitions surrounding the core of a pressurized water nuclear reactor Mar. 17, 1987
4650639 Method and apparatus for eliminating leakage spaces between the partitions surrounding the core of a pressurized water nuclear reactor Mar. 17, 1987
4639351 Repair device for a reactor pressure vessel Jan. 27, 1987
4634569 Device permitting reduction of thermosiphon effects in fast neutron nuclear reactors Jan. 6, 1987
4591068 Core barrel plug May. 27, 1986
4587086 Nuclear reactor May. 6, 1986
4576778 Core barrel plug Mar. 18, 1986
4470952 Floating decontamination apparatus Sep. 11, 1984
4429663 Reactor pressure vessel for a boiling-water reactor Feb. 7, 1984
4421715 Baffle maintenance apparatus Dec. 20, 1983
4380084 Nuclear boiler with dismountable water box Apr. 12, 1983
4308101 Fixing means for a substantially cylindrical nuclear reactor pressure vessel with a vertical axis Dec. 29, 1981
4298433 Means for supplying feed water to a substantially cylindrical, vertical reactor tank Nov. 3, 1981
4295620 Device for anchoring a vessel in a horizontal foundation raft Oct. 20, 1981
4280875 Safety device for preventing unscrewing of cylinder-head screws having an inner polygon, and plastic deformation tool for use with the device Jul. 28, 1981
4158605 Nuclear core baffling apparatus Jun. 19, 1979
4131509 Pressure relief device for a nuclear reactor containment building Dec. 26, 1978
4118277 Steel containment for nuclear reactor installations Oct. 3, 1978
4118276 Conduit system for gases of high temperature and high pressure Oct. 3, 1978
4100021 Nuclear reactor vessel and internals alignment apparatus Jul. 11, 1978
4100019 Nozzle seal Jul. 11, 1978
4097332 Holddown structure for a nuclear reactor core Jun. 27, 1978
4096034 Holddown structure for a nuclear reactor core Jun. 20, 1978
4076524 Reduction in swelling of iron caused by irradiation Feb. 28, 1978
4053357 Air box shock absorber for a nuclear reactor Oct. 11, 1977
4050986 Nuclear reactor I Sep. 27, 1977
4035232 Closure system Jul. 12, 1977
4006055 Resilient tension device in nuclear reactors Feb. 1, 1977
3994776 Nuclear reactor installation Nov. 30, 1976
3977939 Nuclear reactor internals arrangement Aug. 31, 1976











 
 
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