| Patents for F16L 55 - Devices or appurtenances for use in, or in connection with, pipes or pipe systems (25,887) |
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| 04/21/1992 | US5105848 Automatic relief valve |
| 04/21/1992 | CA1299271C Active attenuator and method |
| 04/16/1992 | WO1992006323A1 Improvements in or relating to conduit lining layers |
| 04/16/1992 | DE4039757A1 Lining sewage pipe with thermoplastics - by placing extruder in pit at one end of pipe, extruding thin-walled tubing inside pipe and pressing it against pipe with compressed air |
| 04/16/1992 | DE4039756A1 Lining underground pipe and branch - by extruding thermoplastic tubes in main and branch pipes, heating main tube at end of branch and blowing outwards to bond to branch tube |
| 04/16/1992 | DE4032696A1 Process for lining insides of pipelines - uses resin-impregnated hose with weak spot near end of branch pipe |
| 04/16/1992 | DE4031949A1 Renovation of main sewer and branch pipe - involves fitting liners made of flexible plastics tube |
| 04/15/1992 | EP0480686A1 Method for reinforcing and repairing equipment details and components subjected to heavy abrasion wear |
| 04/15/1992 | CN2101813U Pipeline changing device needless stopping production |
| 04/14/1992 | US5104595 Process and apparatus for in situ rehabilitation of pipelines |
| 04/14/1992 | US5104159 Threadless coupling for pipes and an air-tight inner cylinder therefor |
| 04/14/1992 | US5103929 Fluid noise muffler and method of manufacture |
| 04/14/1992 | US5103524 Apparatus for cleaning the inner surfaces of tubes in operating multi-tube heat transfer devices |
| 04/09/1992 | DE4031715A1 TV camera inspection of inaccessible spaces - using string of elements of independently adjustable length driven into channel and advanced by peristaltic motion |
| 04/09/1992 | DE4031154A1 Sealing plug for cable guide tube - has two elements used to compress seal against housing wall |
| 04/08/1992 | EP0479620A1 Filter device |
| 04/08/1992 | EP0479519A1 Coupling device for pipeline heating system |
| 04/08/1992 | EP0479386A1 Method for lining an elongated hollow space such as a sewer pipe, and lining hose and auxiliary hose for carrying out the method |
| 04/08/1992 | EP0479302A1 Closure device for sealing flow-passages |
| 04/08/1992 | EP0479228A1 Throttle valve to limit the gas flow snap variations in a duct |
| 04/07/1992 | US5102265 Adjustable width split sleeve and method of forming ends thereto |
| 04/07/1992 | US5102263 Method of renovating and/or protecting sewers and pipes |
| 04/07/1992 | US5102095 Flow restrictor for solenoid valve |
| 04/07/1992 | US5102012 Fuel dispensing system having a flexible hose with a static dissipater and a fuel leak detector |
| 04/07/1992 | US5101930 Hydraulic elevator muffler |
| 04/07/1992 | US5101863 Rehabilitating underground pipes with expanding helically wound liner |
| 04/07/1992 | US5101848 Shut off apparatus for a fluid passage, method for controlling the same, and method for confirming closing of the same |
| 04/07/1992 | US5101545 Method of reforming existing gas pipe by repairing joint portions thereof |
| 04/06/1992 | WO1992005944A1 Apparatus for everting a tube and method of using same |
| 04/02/1992 | DE4114601A1 Sewerage pipe inspection appts. - has inspection units movable in pipe and radio link for control and evaluation |
| 04/02/1992 | DE4030859A1 Hydraulic system for pulsating delivery at high pressure - has throttling device at right angles |
| 04/02/1992 | DE4026497C1 Exhaust pipe on vehicle - has securing component accommodating flexible bearing body |
| 04/02/1992 | DE4018574A1 Pipe repair tool - has pipe cutter, extruder, hot air fans for exact pipe fitting and heated cutter for clearing and sealing pipe connections |
| 04/01/1992 | EP0327604B1 Device for preventing the deposit of fly fibre |
| 04/01/1992 | CN2100547U Backwash dirt remover |
| 03/31/1992 | US5100610 Tube plug inspection system |
| 03/31/1992 | US5099887 Drain collar |
| 03/31/1992 | US5099868 Method and apparatus for replacing utility outlets |
| 03/26/1992 | DE4029930A1 Producing hermetic seal between sepn. wall and tubular bodies - using low m.pt. sealing ring which melts and flows during friction welding process to join together ttubular parts |
| 03/25/1992 | EP0477081A2 Method for producing a resin pipe for use as the inner lining of existing pipes |
| 03/25/1992 | EP0477066A1 Method of replacing a tube of a heat exchanger and application of this method |
| 03/25/1992 | EP0476295A1 Device for lining a pipeline with an internal coating |
| 03/24/1992 | US5098263 Pressure vibration damping device in combination of liquid column vibration damping means and pressure pulse absorbing means |
| 03/24/1992 | US5098225 Cutting/expanding tool |
| 03/24/1992 | US5098132 Length compensating joint |
| 03/24/1992 | US5097862 Accumulator with a valve connected float |
| 03/19/1992 | WO1992004609A1 Fuel dispensing system and method of making the same |
| 03/19/1992 | WO1992004575A1 Device for moving loads inside ducts |
| 03/19/1992 | WO1991018236A3 Internal pipe inspection system |
| 03/19/1992 | DE4035435C1 Transfer station of pipeline - incorporates by=pass and pig trap system |
| 03/19/1992 | DE4031186A1 Attachment of new plastic, reclining pipe in old service pipelines - with axial movement and flotation prevented by filled tubular film in gap in crown area between old and new pipes |
| 03/19/1992 | DE4029090A1 Sound damping pipe-clip insert - has portion on protrusion towards pipe allowing slide movement |
| 03/18/1992 | EP0475769A1 Method of renovating and/or protecting sewers or pipes |
| 03/18/1992 | EP0475699A1 Abandonment of a branch main |
| 03/18/1992 | EP0475328A1 Device to limit leakage in case of pipe rupture |
| 03/18/1992 | EP0475309A1 Process and device for reconstructing sewers |
| 03/18/1992 | CN2099237U Leak prevention clamp for pipeline |
| 03/18/1992 | CN2099236U Inflatable rubber bag for pipe sealing |
| 03/17/1992 | US5096332 Method for water leakage prevention in pipeline and liner for water leakage prevention |
| 03/17/1992 | US5095942 Plastic self-insulating ductwork system |
| 03/17/1992 | CA1297420C Dimensionally-recoverable damping article |
| 03/15/1992 | WO1992005383A1 Process for repairing or restoring in situ, a section of a pipe or chamber for receiving or containing pressurized fluid, and device for carrying out said process |
| 03/12/1992 | WO1992004574A1 Apparatus and method of sealing ruptured tanks |
| 03/12/1992 | DE4028854A1 Pipeline pig with manual or automatic control |
| 03/12/1992 | DE4028769A1 Heat-shrink end cover prodn. - by applying heat-activated adhesive inside heat-shrink tube, inserting plug into one end and heating to fuse adhesive and shrink it |
| 03/12/1992 | DE4028169A1 Piping repair, avoiding pipe removal - by inserting inner tube in pipe and filling between inner and outer pipes with mineral, preventing deformation |
| 03/12/1992 | CA2091247A1 Apparatus and method of sealing ruptured tanks |
| 03/11/1992 | EP0474233A1 Pig for pipeline systems |
| 03/11/1992 | EP0473863A1 Duct shutter device for work on operating gas canalizations |
| 03/11/1992 | EP0409955A4 Apparatus for cleaning the inner surfaces of tubes in operating multi-tube heat transfer devices |
| 03/11/1992 | CN2098461U Back-stopping leak stopper |
| 03/11/1992 | CN1059397A Pressure-responsive fluid saving device |
| 03/11/1992 | CN1015818B Pipe burster |
| 03/10/1992 | US5094480 Pipe coupling with leakage draining means |
| 03/10/1992 | US5094271 Expandable hose that reduces the hammering produced in hydraulic system by pumps |
| 03/10/1992 | CA1296999C Apparatus and method for improving the integrity of coupling sections in high performance tubing and casing |
| 03/05/1992 | WO1992003679A1 Safety system for fluid conduit |
| 03/05/1992 | DE4039353C1 Closing of damaged plastics pipe - involves plug screwed into side of pipe from housing fitted on outside |
| 03/05/1992 | DE4027099A1 Dressing interior wall of pipework - by shaping profile of hot e.g. crosslinked polyethylene tube, inserting into pipe, heating to expand it to pipe wall and drawing through pi |
| 03/05/1992 | DE4023549A1 Verfahren zur innenauskleidung von rohrleitungen Method for lined by pipelines |
| 03/04/1992 | EP0473558A1 Fitting pipe for water supplying washing machines, in particular dish washing machines |
| 03/04/1992 | EP0473103A1 Method for lining internal surfaces of pipelines |
| 03/04/1992 | EP0472798A2 Pressure-responsive fluid saving device |
| 03/04/1992 | CN2097993U Efflux steam silencer |
| 03/04/1992 | CN2097943U Pipe anti-stop clip |
| 03/03/1992 | US5092631 Safety enclosure for gas line fittings |
| 03/03/1992 | US5092375 Liquid barrier system |
| 03/03/1992 | US5092367 Asymmetrical skid assembly |
| 03/03/1992 | CA1296617C Method and apparatus for conducting operation in pipe |
| 03/01/1992 | WO1992004504A1 Adjustable protecting sleeve and fastener therefor |
| 03/01/1992 | CA2090341A1 Adjustable protecting sleeve and fastener therefor |
| 03/01/1992 | CA2050029A1 Method for lining internal surfaces of pipelines |
| 02/25/1992 | US5090299 Piston unit with rolling membrane |
| 02/21/1992 | WO1992003680A1 Method and apparatus for positioning components |
| 02/21/1992 | CA2025512A1 Pressure-responsive fluid saving device |
| 02/20/1992 | WO1992002755A1 Inserting linings into pipes |
| 02/20/1992 | WO1991019928A3 Pipe fittings |
| 02/20/1992 | DE4126310A1 Pipe repair appliance with cylindrical smoothing piece - applies synthetic resin layer by using distributor with compartment, seal, pressure sensor and ducts |
| 02/20/1992 | DE4042396A1 Sewer leak locating system - has pressure chamber formed between double walls on travelling remote controlled machine |
| 02/19/1992 | EP0471121A1 Pipe identifying apparatus in use for pneumatic force type device for transporting powdered or granular materials |