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Class Information
Number: 976/DIG.176
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] > Sealing plugs [g21c-13/06] > For tubes (e.g., standpipes; locking-devices for the plugs included) [g21c-13/06b]
Description:










Sub-classes under this class:

Class Number Class Name Patents
976/DIG.177 Seals for the plugs [g21c-13/06b2] 0


Patents under this class:

Patent Number Title Of Patent Date Issued
4826036 Nozzle dam sealing system May. 2, 1989
4820474 Pressure seal stud hole plug unit Apr. 11, 1989
4811759 Device for the fluidtight closure of an aperture extending through a wall Mar. 14, 1989
4780272 Device for suspending a structure Oct. 25, 1988
4777008 Isolating device for a water chamber in a steam generator for a nuclear reactor Oct. 11, 1988
4770235 Nozzle dam locking pin assembly Sep. 13, 1988
4769207 Disassembleable and reassembleable sealing device for pipelines, especially for reactor coolant nozzles of reactor pressure vessels, and method for testing the sealing device Sep. 6, 1988
4722122 Rotation station for remotely installing mechanical tube plugs Feb. 2, 1988
4707323 Duct closure Nov. 17, 1987
4696102 Collet type gripper Sep. 29, 1987
4693389 Reactor internals core barrel hole plug Sep. 15, 1987
4693277 Remotely operable tool for setting plugs into heat exchanger tubes Sep. 15, 1987
4667701 Nozzle dam assembly May. 26, 1987
4656714 Method of installing a nozzle dam assembly Apr. 14, 1987
4652418 Plug testing and removal tool Mar. 24, 1987
4624824 Reactor vessel sealing plug Nov. 25, 1986
4591477 Apparatus and method for servicing a nuclear reactor system May. 27, 1986
4584166 Tooling system for remote load positioning Apr. 22, 1986
4584162 Pipe plug and remote installation equipment therefor Apr. 22, 1986
4553889 Expanding plug Nov. 19, 1985
4393899 Plugging apparatus Jul. 19, 1983
4312708 Reactor stud hole plug unit Jan. 26, 1982
4195868 Tubular closure mechanism Apr. 1, 1980
4076144 Top closure for control rod drive for nuclear reactor Feb. 28, 1978











 
 
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