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Class Information
Number: 376/205
Name: Induced nuclear reactions: processes, systems, and elements > Seal arrangements > Between pressure vessel cover and vessel or portion thereof
Description: Subject matter wherein one of the elements is a container, the interior pressure of which is different from the ambient pressure and the other element is a closure element for such a container.

Sub-classes under this class:

Class Number Class Name Patents
376/206 Rotating plug-type cover 42

Patents under this class:
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Patent Number Title Of Patent Date Issued
8670514 Hatch mechanical locking system Mar. 11, 2014
8608010 Sealing element fastening system for a pressure vessel, in particular a reactor pressure vessel Dec. 17, 2013
8594266 Method for securing and confining the gasket plane of a vessel of a nuclear reactor and a gasket for applying this method Nov. 26, 2013
7813464 Permanent seal ring for a nuclear reactor cavity Oct. 12, 2010
7751522 Covering element for a reactor core of a nuclear installation, and nuclear reactor Jul. 6, 2010
7447291 Nuclear reactor and means for inserting liquid neutron absorber into the core Nov. 4, 2008
7120219 Reactor pressure vessel Oct. 10, 2006
6888909 Reactor pressure vessel May. 3, 2005
6888908 Reactor head with integral nozzles May. 3, 2005
6614868 Device for sealing a tube, in particular a lance shaft Sep. 2, 2003
6594333 Thermal load reducing system for nuclear reactor vessel Jul. 15, 2003
6522708 Seal arrangement for in-core instrument housing Feb. 18, 2003
6351510 Nuclear plant Feb. 26, 2002
6301319 Method of sealing a reactor pressure vessel Oct. 9, 2001
6125159 Canopy seal clamp assembly and method of installation Sep. 26, 2000
6111928 Top mount canopy seal clamp assembly Aug. 29, 2000
5967708 Reactor vessel head tool positioning device Oct. 19, 1999
5802125 Bottom head assembly Sep. 1, 1998
5754612 Joint for interfacing steel head closure and prestressed concrete reactor vessel May. 19, 1998
5633901 Permanent pool cavity seal for nuclear reactor May. 27, 1997
5631936 Method and arrangement for compression sealing an omega joint May. 20, 1997
5619546 Resistance temperature detector nozzle mechanical clamp Apr. 8, 1997
5519741 System for inspection and mending in a reactor vessel of a nuclear reactor May. 21, 1996
5513227 Readily disconnectable nozzle arrangement for use with a nuclear reactor Apr. 30, 1996
5434894 Reactor cavity seal joint Jul. 18, 1995
5426676 Extrusion-resistant seal assembly Jun. 20, 1995
5420900 Internal equipments for a nuclear reactor having spacer columns and control cluster guides May. 30, 1995
5412700 Reactor refueling containment system May. 2, 1995
5359632 Reactor vessel cavity seal plate Oct. 25, 1994
5325407 Core barrel and support plate assembly for pressurized water nuclear reactor Jun. 28, 1994
5323427 Laterally translating permanent seal ring for a nuclear reactor cavity Jun. 21, 1994
5323428 Readily disconnectable nozzle arrangement for use with nuclear reactor Jun. 21, 1994
5309490 Remote stud cleaner May. 3, 1994
5278876 Reactor pressure vessel vented head Jan. 11, 1994
5272732 Reactor cavity seal joint Dec. 21, 1993
5268941 Control rod canopy seal positioning and welding system Dec. 7, 1993
5230860 Reactor vessel cavity seal plate Jul. 27, 1993
5227124 Method and structure for preventive maintaining an elongated metal hollow member Jul. 13, 1993
5217676 Sealing plug for an internally threaded hole and tool and process for the fitting of this plug Jun. 8, 1993
5182076 Method for monitoring the emplacement of a transportable element and the tightness of its joint with a fixed structure, and the use of this method Jan. 26, 1993
5167905 Foldable nozzle dam having a foldable extrusion-resistant seal or gasket Dec. 1, 1992
5119956 Jam proof closure assembly for lidded pressure vessels Jun. 9, 1992
5110536 Device for wedging the upper support plate of cluster guides in relation to the vessel of a nuclear reactor May. 5, 1992
4996018 High pressure thimble/guide tube seal fitting with built-in low pressure seal especially suitable for facilitated and more efficient nuclear reactor refueling service Feb. 26, 1991
4980117 Reactor vessel O-ring spring clip Dec. 25, 1990
4932553 Radiation reducing manway doors Jun. 12, 1990
4818476 Reactor vessel stud thread protector Apr. 4, 1989
4786461 Reactor internals hold down spring Nov. 22, 1988
4758402 Refueling seal arrangement for nuclear reactor vessel Jul. 19, 1988
4753768 Reactor cavity pool seal Jun. 28, 1988

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