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Class Information
Number: 976/DIG.175
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]
Description:










Sub-classes under this class:

Class Number Class Name Patents
976/DIG.178 Closures for reactor-vessels (also rotatable) [g21c-13/06d] 53
976/DIG.176 For tubes (e.g., standpipes; locking-devices for the plugs included) [g21c-13/06b] 24


Patents under this class:

Patent Number Title Of Patent Date Issued
5069862 Apparatus for handling a machine for the tensioning of screwed connecting elements Dec. 3, 1991
5007460 Adjustable nozzle dam assembly and method of installing same Apr. 16, 1991
4883185 Suspension type transporter for a bolt drawing machine and positioning controller therefor Nov. 28, 1989
4830814 Integrated head package for a nuclear reactor May. 16, 1989
4820476 System and method for plugging the core barrel of a nuclear reactor Apr. 11, 1989
4818476 Reactor vessel stud thread protector Apr. 4, 1989
4815344 Control mechanism of a bolt stressing unit Mar. 28, 1989
4716010 Tooling apparatus for modifying nuclear reactors Dec. 29, 1987
4690172 Foldable dual-seal nozzle dam Sep. 1, 1987
4671518 Inflatable reactor vessel stud hole plug Jun. 9, 1987
4600115 Temporary obturation panel of a passage inside a vessel accessible only through an orifice of smaller size Jul. 15, 1986
4598580 Inflatable seal for an annular cavity Jul. 8, 1986
4591068 Core barrel plug May. 27, 1986
4576778 Core barrel plug Mar. 18, 1986
4565111 Device for rotating and axially moving a bolt Jan. 21, 1986
4454957 Self-locking sealing plug and installing method Jun. 19, 1984
4324616 Detachable and leaktight device for closing an orifice of a nuclear reactor vessel Apr. 13, 1982
4288898 Control rod drive mechanism closure device Sep. 15, 1981
4120218 Arrangement for threading bolts into and out of tapped bores of reactor vessels Oct. 17, 1978
4052652 Apparatus for tightening and releasing a pressure vessel clamping nut Oct. 4, 1977
4047456 Motor-driven screwing and transporting tool for reactor pressure vessel head retaining fastenings Sep. 13, 1977
4028178 System for the heat insulation of horizontal closure surfaces for a liquid metal cooled nuclear reactor Jun. 7, 1977
3997078 Sealing cover for containers for hazardous materials Dec. 14, 1976
3947322 Reactor pressure vessel support arrangement Mar. 30, 1976
3947321 Control and shim rod arrangement with moveable plugs Mar. 30, 1976











 
 
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