Patents
Patents for F28F 11 - Arrangements for sealing leaky tubes or conduits (1,051)
11/1986
11/25/1986US4624866 Brazing sleeve having ceramic flux band and method for applying same
11/25/1986CA1214455A1 Leak detecting matrix for heat exchangers
11/18/1986CA1214033A1 Method of repairing leaks in steam generator tubes
10/1986
10/07/1986US4615477 Method for replacing tubes in a header or drum
10/01/1986EP0195978A1 Plug for sealing faulty heat-exchanger tubes
09/1986
09/24/1986EP0195454A2 Working robot used for the water chamber of the heat exchanger
09/17/1986EP0194467A2 Device for inserting a sleeve in a tube of a steam boiler
09/16/1986US4611485 High pressure pipe stopper
08/1986
08/19/1986US4606491 Process for sealing a leak in a rolled tube/tubeplate joint
08/05/1986US4604512 Heat exchanger tube repair
07/1986
07/22/1986CA1208047A1 Explosive welding device
07/08/1986US4598738 Tube closing device, especially for heat-exchanger tubes
07/02/1986EP0186013A2 Method of applying a ceramic flux band onto a brazing sleeve
06/1986
06/03/1986US4592577 Sleeve type repair of degraded nuclear steam generator tubes
05/1986
05/14/1986EP0181250A1 Method for repairing a steam generator tube by sleeving, and repairing sleeve for this tube
05/13/1986US4587904 Debris free plug assembly for heat exchange tubes
05/06/1986US4586250 Apparatus for sleeving tubes in hostile environments
04/1986
04/22/1986US4583672 Explosive welding device
04/15/1986US4581801 Sleeving method
04/08/1986US4580426 For expanding a conduit against a surrounding structure
03/1986
03/04/1986US4573248 Method and means for in situ repair of heat exchanger tubes in nuclear installations or the like
02/1986
02/04/1986US4567632 Heat exchange tube repairs
01/1986
01/28/1986EP0119996A4 Method of repairing leaks in steam generator tubes.
12/1985
12/17/1985US4559436 Heat exchanger tube repair
12/10/1985CA1197902A1 Apparatus for inspecting heat exchanger tubes
12/03/1985US4555833 Mechanical plug drill
11/1985
11/21/1985EP0161815A1 Method for replacing tubes in a header or drum
11/21/1985EP0161780A1 Pipe repair sleeve apparatus and method of repairing a damaged pipe
10/1985
10/24/1985WO1985004701A1 Pipe repair sleeve apparatus and method of repairing a damaged pipe
10/22/1985US4547944 Tube-in-shell heat exchangers
10/22/1985CA1195685A1 Heat exchangers and methods of construction thereof
10/16/1985EP0158544A1 Process for replacing a sleeve inside a pipe, and devices for carrying out this process
09/1985
09/18/1985EP0154833A2 Mechanical plug drill
09/04/1985EP0153670A2 Apparatus and Method for expanding a conduit
09/04/1985EP0153563A2 Mechanical tube plug removal tool
09/03/1985US4538674 Heat exchanger having tubular members concentric with fluid carrying tubes to prevent mixing of the heat exchange fluids and method of construction thereof
08/1985
08/28/1985EP0152778A2 Sleeving of tubes of steam generator in hostile environment
08/20/1985US4535727 Heat exchanger with adjustable platform for cleaning and repairing
07/1985
07/17/1985EP0148699A1 Device to detect and locate a leak in tubes of a steam generator tube bundle
05/1985
05/29/1985EP0142985A2 Method for providing a tubular insert within an aperture
05/21/1985US4518635 Process for sealing at least one end of a cellular module
05/08/1985EP0140586A2 Sleeving of tubes in hostile environments
05/02/1985EP0139494A2 Sleeving of tubes of steam generator
04/1985
04/30/1985US4513786 Mechanical tube plub
04/24/1985EP0137984A2 Tube repair insert for steam generator
03/1985
03/19/1985US4505323 Apparatus for inspecting heat exchanger tubes
03/05/1985US4502511 Tube plug
02/1985
02/13/1985EP0132950A1 Heat exchange tube repairs
01/1985
01/23/1985EP0131792A1 Remotely operable plug insertion tool or heat exchanger pipes
01/16/1985EP0131466A2 Radially expanding tubular members
01/16/1985EP0131099A2 Gas heat exchanger, in particular a synthesis gas cooler
12/1984
12/19/1984EP0128644A2 Heat exchanger tube repair
12/04/1984US4485847 Compression sleeve tube repair
11/1984
11/23/1984EP0113344A4 Heat exchangers and methods of construction thereof.
10/1984
10/24/1984EP0122610A1 Mechanical tube plug
10/10/1984EP0121137A1 Seal welded tube sleeve
10/03/1984EP0120277A1 Compression sleeve for a tube repair
10/03/1984EP0119996A1 Method of repairing leaks in steam generator tubes.
09/1984
09/04/1984US4469051 Emergency shut-off device, in case of leakage of a steam generator tube
08/1984
08/21/1984US4466481 Leak detecting matrix for heat exchanges
07/1984
07/18/1984EP0113344A1 Heat exchangers and methods of construction thereof.
07/17/1984US4459917 Method and apparatus for producing even tube extensions in a partially assembled heat exchanger
07/11/1984EP0113080A1 Tube plug
07/04/1984EP0112612A2 Repairing degraded tubes of steam generators
03/1984
03/29/1984WO1984001119A1 Method of repairing leaks in steam generator tubes
03/29/1984WO1984001118A1 Explosive welding device
03/13/1984US4436117 Leak resistant plug assembly
03/07/1984EP0102188A2 Explosively activated assembly for repairing heat exchange tubes
02/1984
02/21/1984CA1162389A1 Plug removal apparatus
02/02/1984WO1984000415A1 Heat exchangers and methods of construction thereof
01/1984
01/17/1984US4425944 Repair plug for heat exchanger tubes, especially for steam generators of pressurized-weather nuclear power plants
01/17/1984US4425943 Plug assembly for use in method and apparatus for repairing heat exchangers
01/11/1984EP0098217A2 Method of selectively closing the ends of a honeycomb element, and element obtained by this method
11/1983
11/01/1983US4412453 Method for detecting brazing defects in plate-fin type heat exchangers
10/1983
10/12/1983EP0091374A1 Emergency cut-off device for a steam generator tube in case of leakage
10/12/1983EP0091004A1 Tube plugging apparatus, especially for heat exchanger tubes
09/1983
09/27/1983CA1154388A1 Plug installation apparatus
07/1983
07/19/1983US4393920 Manipulator for working in a heat exchanger
07/19/1983US4393564 Method and apparatus for repairing heat exchangers
06/1983
06/28/1983US4390042 Tube plug
05/1983
05/31/1983US4385501 Hot gas cooler
05/10/1983CA1146161A1 Tube plug
04/1983
04/05/1983CA1143934A1 Inspection system for heat exchanger tubes
02/1983
02/23/1983EP0072736A1 Heat exchanger with double barrier
01/1983
01/25/1983US4369662 Plug installation apparatus
01/18/1983US4368571 Sleeving method
01/04/1983US4366617 Plug removal apparatus
10/1982
10/12/1982CA1133461A1 Drive assembly for probe carrier
10/05/1982US4352379 Pressure vessel tube sealing and support method
09/1982
09/07/1982US4347790 Explosive plug for blocking tubes
09/01/1982EP0058850A1 Plug installation apparatus
08/1982
08/24/1982CA1130222A1 Device for stopping a leak in a straight portion of a heat-exchanger tube
03/1982
03/31/1982EP0048325A2 Hot-gas cooler with a pressure container
03/17/1982EP0047410A1 Braze sleeving method
03/17/1982EP0047407A1 Sleeving method
02/1982
02/03/1982EP0044982A2 Tube plug
01/1982
01/19/1982CA1116380A1 Support plug
01/12/1982US4310165 Elastomeric packing for a clamped connection
01/12/1982US4310029 Expandable tube plug
09/1981
09/22/1981US4290543 Support plug
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