| Patents for F28F 11 - Arrangements for sealing leaky tubes or conduits (1,051) |
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| 02/08/1996 | WO1996003250A1 Improved direct tube repair process |
| 02/06/1996 | US5490188 System and method for evaporating moisture from a gap defined between a repair sleeve and a surrounding heat transfer tube in a nuclear steam generator |
| 01/02/1996 | US5479961 Method of plugging a heat exchanger tube and plug therefor |
| 11/14/1995 | US5465483 Method for removing a metallic plug from a tube |
| 11/08/1995 | EP0681301A1 Feedwater nozzle and method of repair |
| 10/10/1995 | US5456290 Tube plug having a flange sealing a chamber for plugging a tubular member |
| 09/28/1995 | DE4427712C1 Method of removing water from annular chamber between heat exchanger pipe and sleeve |
| 08/30/1995 | EP0669490A1 Method for achieving a tight connection between a pipe and a sleeve |
| 06/13/1995 | US5423351 Fastener for tube plug |
| 05/26/1995 | WO1995014122A1 Process and apparatus for in situ electroplating a structural layer of metal bonded to an internal wall of a metal tube |
| 05/26/1995 | WO1995014121A1 Metal tube having a section with an internal electroplated structural layer |
| 04/15/1995 | CA2124267A1 Device and method for sleeving the inside surface of tubular members |
| 03/28/1995 | US5400827 Metallic sleeve for bridging a leakage point on a pipe |
| 11/30/1994 | EP0626232A1 Device and method for sleeving an inside surface of a tube |
| 10/25/1994 | US5359172 Direct tube repair by laser welding |
| 09/06/1994 | US5345484 Feedwater nozzle and method of repair |
| 09/06/1994 | CA2009235C Plug retainer |
| 07/20/1994 | EP0607052A2 Method and apparatus of effecting a repair to a metal tube |
| 06/29/1994 | EP0604265A1 Replacement nozzle and method for replacing a nozzle in a pressure vessel |
| 06/28/1994 | US5323849 Corrosion resistant shell and tube heat exchanger and a method of repairing the same |
| 05/17/1994 | US5311911 Tube plug for closing a defective heat exchanger tube, method for closing a defective heat exchanger tube and method for loosening a tube plug |
| 03/01/1994 | US5289851 Plug for heat exchanger tubes |
| 02/16/1994 | CN1023846C Sealing-plugs for tubes of steam generation |
| 01/20/1994 | DE4243213C1 Fixing sealing socket in tube - using several rings made of shape memory alloy which can only bridge over reduced gap width |
| 01/18/1994 | CA1326128C Method of apparatus for expanding and sealing a sleeve into a surrounding tube |
| 12/14/1993 | US5271048 Replacement nozzle and method for replacing a nozzle in a pressure vessel |
| 10/05/1993 | US5249604 Tube plug for plugging a tube |
| 04/27/1993 | US5205038 Method of replacing a tube on a straight-tube heat exchanger |
| 04/13/1993 | US5201118 Process for repairing heat-exchanger tubes |
| 03/16/1993 | US5194214 Tube plug and method for plugging a tube |
| 03/02/1993 | US5189789 Method for sealing tubes |
| 02/02/1993 | CA1313299C Steam generator tube extraction sleeve mounting device and extraction method of a generator tube section |
| 01/07/1993 | DE4120748A1 Soldering flat tubing to zigzag supports to make flat tube heat exchanger - using solder paste dispensing device to simultaneously coat both sides of tubing prior to heating |
| 12/02/1992 | EP0516179A2 Apparatus for expanding and sealing a sleeve into a surrounding tube |
| 12/01/1992 | US5167907 Process for plugging a tube of a straight-tube heat exchanger |
| 12/01/1992 | US5167064 For installation in a heat exchanger |
| 11/24/1992 | US5165470 Plugging apparatus for heat exchanger |
| 10/20/1992 | US5155894 A defective tube |
| 10/07/1992 | CN1018579B Intervention device, particularly for checking, inspecting and maintaining heat exchangers |
| 08/26/1992 | EP0447391B1 Obturating element for sealing a defective heat-exchanger pipe |
| 05/27/1992 | EP0487253A1 Apparatus for inspecting a tube plug |
| 04/01/1992 | EP0477572A1 Plugging apparatus for heat exchanger |
| 03/31/1992 | US5100610 Tube plug inspection system |
| 03/25/1992 | EP0477066A1 Method of replacing a tube of a heat exchanger and application of this method |
| 03/10/1992 | US5094809 Device for the obturation and retention of a sealed closure plug of a steam generator tube |
| 02/12/1992 | EP0470893A1 Process for sealing a tube of a heat exchanger with straight tubes and use of this process |
| 02/04/1992 | US5086201 Method and devices for the extraction of a closure plug from a steam generator tube |
| 01/14/1992 | US5079837 Repair lining and method for repairing a heat exchanger tube with the repair lining |
| 10/29/1991 | US5061340 Device for fitting an extraction sleeve into a steam-generator tube and corresponding process for the extraction of a tube portion |
| 10/17/1991 | DE4021879A1 Defective tube sealing method - involves inserting mechanical plug bar with washers from one end |
| 10/01/1991 | CA1289738C Device for the remote feeding of cylindrical pieces to an automatic machine, such as a machine plugging the tubes of a steam generator of a pressurised-water nuclear reactor |
| 09/25/1991 | EP0447391A1 Obturating element for sealing a defective heat-exchanger pipe and process for removing said obturating element. |
| 09/19/1991 | DE4008252A1 Metal sleeve for pipe leakage point - consists of ring around sleeve ends, recess, with coated spirals |
| 09/18/1991 | EP0446841A1 Metallic sleeve for bridging a leakage in a pipe |
| 09/12/1991 | DE4011136C1 Sleeve for sealing leaking pipe - has rings of shape retaining alloy spaced along periphery of sleeve |
| 08/13/1991 | CA1287483C Process and device for lining a peripheral tube of a steam generator |
| 07/02/1991 | US5027507 Method for controlling leakage through degraded heat exchanger tubes in the tubesheet region of a nuclear generator |
| 06/11/1991 | US5022437 Hollow plug for blocking a heat exchanger tube |
| 05/29/1991 | EP0429267A1 Tube plug and method for plugging a tubular member |
| 05/21/1991 | US5016674 Rod plug caps |
| 04/23/1991 | US5008996 Machine for remotely lining the inside of a heat exchanger tube end with a sleeve |
| 03/19/1991 | CA1281533C Process and device for remotely lining a steam generator tube of apressurized water nuclear reactor |
| 03/13/1991 | EP0416848A1 Heat exchangers |
| 01/29/1991 | CA1279639C Snap on fillerneck assembly for radiators |
| 01/22/1991 | US4986313 Sealing plug for a steam-generator tube |
| 01/15/1991 | US4984627 Intervention device, particularly for checking, inspecting and maintaining heat exchangers |
| 01/08/1991 | US4982763 Plug retainer |
| 01/03/1991 | DE3920013A1 Repair of cracked tube of heat exchanger - using bush made from memory metal, expanded by heating via electric element |
| 12/27/1990 | EP0404637A1 Sealing plug for a steam generator tube |
| 12/11/1990 | US4976307 Apparatus and method for sealing tubes |
| 12/11/1990 | US4976027 Device for lining a peripheral tube of a steam generator |
| 10/17/1990 | EP0392646A2 Plug retainers |
| 10/17/1990 | CN1046111A Method and devices for extraction of closure plug from steam generator tube |
| 10/10/1990 | EP0391777A1 Method and device for removing a plug from a steam generator tube |
| 10/04/1990 | CA2013685A1 Process and apparatus for extracting the blanking plug of a steam generating tube |
| 10/03/1990 | EP0271739B1 Process for the repair or protection of one extremity of a metallic heat exchanger tube, and sleeve for carrying it out |
| 10/02/1990 | US4960650 Method of repairing or protecting an end of a metal tube in a heat exchanger and sleeve for implementing same |
| 09/19/1990 | EP0388296A1 Intervention apparatus, particularly for the control, inspection and maintenance of heat exchangers |
| 09/19/1990 | CN1045452A Intervention device, particularly for checking, inspecting and maintaining heat exchangers |
| 09/12/1990 | EP0291003B1 Hollow plag for sealing a heat exchanger tube |
| 09/05/1990 | EP0385219A2 Repairing device and method of its introduction into a pipe of a heat exchanger |
| 08/16/1990 | EP0381880A1 Explosively welding sleeves to inner surfaces of tubes |
| 08/07/1990 | US4945979 Robotic arm for delivering a tube plugging tool |
| 07/17/1990 | US4941512 Method of repairing heat exchanger tube ends |
| 07/10/1990 | CA1271315A1 Process of replacing a sleeve mounted within a pipe, and devices for carrying out that process |
| 07/03/1990 | US4937933 Apparatus for the introduction of a sleeve into a tube of a steam generator |
| 06/27/1990 | CN1008554B Sealing method and device capable of avoiding short fluid bypass in tubular heat exchanger |
| 06/26/1990 | US4936378 Apparatus for stabilizing a tube of a heat exchanger |
| 06/14/1990 | WO1990006483A1 Obturating element for sealing a defective heat-exchanger pipe and process for removing said obturating element |
| 05/09/1990 | CN1042021A Sealing-plugs for tubes of steam generation |
| 05/08/1990 | US4922605 Device for lining a peripheral tube of a steam generator |
| 04/25/1990 | EP0365385A1 Device for inserting a tube extraction sleeve in a steam generator tube and method for withdrawing the corresponding tube section |
| 04/24/1990 | US4918808 Device for remotely lining a steam generator tube of a pressurized water nuclear reactor |
| 04/18/1990 | EP0364330A1 Sealing plug for a steam generator tube |
| 02/27/1990 | US4903392 Method for removing a metallic plug from a tube by simultaneously heating and stretching the plug |
| 02/13/1990 | US4899436 Remotely controlled device for fitting and withdrawing a plug for closing a steam generator tube |
| 02/08/1990 | DE3826597A1 Verschlussstopfen fuer waermeaustauscherrohre Sealing plugs for heat exchanger tubes |
| 02/07/1990 | EP0119996B1 Method of repairing leaks in steam generator tubes |
| 01/02/1990 | CA1264110A1 Suspension of tools for sleeving of tubes of steam generator |
| 12/27/1989 | EP0347584A2 Method and apparatus for removing a metallic plug from a tube by simultaneously heating and stretching the plug |