| Patents for F16L 55 - Devices or appurtenances for use in, or in connection with, pipes or pipe systems (25,887) |
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| 08/08/1989 | US4854408 Obstacle surmounting aid for tracked vehicle |
| 08/08/1989 | US4854384 Pipeline packer |
| 08/08/1989 | US4854338 Breakaway coupling, conduit system utilizing the coupling and methods of making the same |
| 08/03/1989 | DE3802807A1 Method for closing a filling connection |
| 08/03/1989 | DE3801472A1 Process for repairing a buried pipeline |
| 08/03/1989 | DE3801471A1 Process and apparatus for repairing a buried pipeline |
| 08/03/1989 | DE3801469A1 Process for repairing a buried pipeline |
| 08/03/1989 | DE3801468A1 Process for repairing a buried pipeline, preferably a sewer duct |
| 08/02/1989 | EP0326412A1 Method of drilling a branch line aperture after internal lining of a pipeline and a water plug used in the method |
| 08/02/1989 | EP0326156A1 Apparatus for conducting operation in pipe |
| 08/02/1989 | EP0325898A1 A temporary plug for hydraulic and fluid ducts |
| 08/02/1989 | EP0325732A1 Plug for closing and sealing a cylindrical bore in a housing |
| 08/02/1989 | EP0158647B1 Port protector |
| 08/01/1989 | US4853165 Method of using heat-recoverable articles comprising conductive polymer compositions |
| 08/01/1989 | US4852915 Shut-off and locking assembly for swivel gladhand |
| 08/01/1989 | US4852913 Apparatus for repairing pipes |
| 08/01/1989 | US4852848 Pipe vibration reducer |
| 08/01/1989 | US4852614 Shut-off device which can be inserted into a pipeline |
| 08/01/1989 | US4852391 Pipeline vehicle |
| 07/27/1989 | DE3843168A1 Device for checking the positive pressure of a medium |
| 07/27/1989 | DE3801732A1 Sound-insulating sheeting and wound sheeting for pipes and ducts |
| 07/27/1989 | DE3801707A1 Insulation measure against the longitudinal conduction of sound in structural parts |
| 07/26/1989 | EP0325548A1 Rotary mower equipped with cutting elements mounted above a housing by means of guiding and driving bearings |
| 07/26/1989 | EP0325412A2 Metal well screen assembly with plastic end fitting and method of attaching same |
| 07/26/1989 | CN2041759U Liquid grading porthole energy-consumed unit |
| 07/26/1989 | CN2041758U Liquid magnetizing unit mounting in tube |
| 07/25/1989 | US4850600 Sealing device for pipe connectors discharging into a vessel, in particular a steam generator |
| 07/25/1989 | US4850566 Squeezable closure valve for a fluid-conducting conduit |
| 07/25/1989 | US4850505 Mechanism for locking of a cover againt a flange |
| 07/20/1989 | DE3903864C1 Method and apparatus for redeveloping old pipes |
| 07/20/1989 | DE3800245A1 Pipe piece with access connection stubs which can be closed by a cover |
| 07/19/1989 | EP0324463A1 Device for expanding pipes |
| 07/19/1989 | EP0324287A1 Pipe burster |
| 07/18/1989 | US4848964 Apparatus for correcting irregularities in or enlarging an underground duct |
| 07/18/1989 | US4848407 Pipeline rehabilitation method utilizing articulated gasketed-joint pipe |
| 07/18/1989 | US4848406 Sealing device for a pipeline, in particular for a loop line of a steam generator hemisphere |
| 07/18/1989 | US4848168 Traveling device moving along elongated member |
| 07/18/1989 | US4847967 Process for the repair by lining or a steam-generator tube and a repair lining for this tube |
| 07/18/1989 | CA1257483A1 Method for restoring underground pipelines |
| 07/13/1989 | DE3801824C1 Method and apparatus for the trenchless laying of supply lines |
| 07/12/1989 | CN2040983U Two-stage two-section type noise absorber for pipeline |
| 07/11/1989 | US4846228 Surge eliminator |
| 07/11/1989 | CA1257211A1 Process for obtaining a fviii/vwf complex having therapeutic effects and product thus prepared |
| 07/06/1989 | DE3743915A1 Pipe piece for introduction into a pipeline which can be closed at both ends |
| 07/05/1989 | EP0323139A2 Tube plug tip restrainer apparatus |
| 07/05/1989 | EP0322588A1 Gasket |
| 07/05/1989 | EP0204694B1 Device for carrying out improvement work on a damaged pipeline which is no longer accessible |
| 07/04/1989 | US4845234 In situ lining of pipe interiors, curing agents for epoxy resins |
| 07/04/1989 | US4844396 Strap on pipe mounting |
| 07/04/1989 | US4844322 Method for replacing a section of tubing |
| 07/04/1989 | US4844165 TFL assembly for a dual diameter flow-line/riser system and flow-line/riser system for use with the assembly |
| 06/29/1989 | WO1989005887A1 Process for making soil impermeable to water, in particular for repairing leaking underground tubes or for improving the durability of structures |
| 06/28/1989 | CN2040210U Pipe-abutting parts for rush repair |
| 06/28/1989 | CN2040209U Rapidly-disassembled fastening device |
| 06/22/1989 | DE3740306A1 Adjustable, hydraulic widening apparatus for repairing or renewing underground sewer pipes, by widening with as small an annular space as possible, for the subsequent guiding-in of special short pipes |
| 06/21/1989 | EP0321063A2 Colloidal polymer dispersion for internal sealing of pipes and process for the application thereof |
| 06/20/1989 | US4840096 Device for machining chamfers on a free of a pipe |
| 06/20/1989 | CA1256083A1 Flow control device for administration of iv fluids |
| 06/15/1989 | DE3835900A1 Verfahren sowie vorrichtung zum austausch einer im erdreich verlegten rohrleitung Method and device for exchange of a laid in the ground-pipeline |
| 06/14/1989 | EP0319952A2 Squeezable valve for fluid conduits |
| 06/14/1989 | EP0319723A2 Method of removing plugs |
| 06/14/1989 | EP0302931A4 Suction device. |
| 06/13/1989 | US4838299 Pulsation dampener apparatus |
| 06/13/1989 | US4838075 Method and a fastener for closing and sealing pipes subjected to internal pressure |
| 06/07/1989 | EP0319494A1 Valve arrangement incorporating an air-delivery duct |
| 06/07/1989 | EP0319194A1 Method and apparatus for installing an optical fibre member |
| 06/07/1989 | EP0318636A1 Flexible pipe |
| 06/07/1989 | CN2038990U Automatic control constant temp. filter for petroleum pipeline |
| 06/06/1989 | US4836715 Passageway lining material |
| 06/06/1989 | US4836409 Integral diaphragm-liner bladder for hydropneumatic tank |
| 06/01/1989 | WO1989004740A1 Metallurgically improved tip-off tube for a vacuum enclosure |
| 05/31/1989 | EP0318280A1 Method and apparatus for blowing an optical fibre member |
| 05/31/1989 | EP0318232A1 Insulated pipe |
| 05/30/1989 | CA1254852A1 Lining of pipelines and passageways |
| 05/30/1989 | CA1254757A1 Slined coupling for oscillating shafts |
| 05/24/1989 | EP0317234A1 Flanged pipeline connections |
| 05/24/1989 | EP0316747A2 Method and apparatus for building pipeline |
| 05/24/1989 | EP0316588A1 Device to expose the outside of a pipe transporting a freezing medium with cooling means |
| 05/24/1989 | DE3737695A1 Schauglas-armatur Sight glass fitting |
| 05/23/1989 | US4832237 Adapter assembly for storage containers |
| 05/23/1989 | US4831703 Apparatus and method for plugging a tube |
| 05/18/1989 | WO1989004435A1 Improvements in or relating to the re-lining of sewers |
| 05/18/1989 | DE3738013A1 Method for degassing a liquefied-gas line |
| 05/18/1989 | DE3737301A1 Process and apparatus for repairing sewer pipes |
| 05/17/1989 | EP0315804A1 Muffler hanger for a motor vehicle |
| 05/17/1989 | CN2037647U Combined noise-eliminating and cinder-removing device for tube punching |
| 05/16/1989 | US4830538 Method and apparatus for refurbishing deficient pipes |
| 05/16/1989 | US4830058 Closure cap with clutch-actuated release |
| 05/16/1989 | US4830044 Piping connector |
| 05/16/1989 | US4830041 Reelable flow stopper for plugging fluid flow within a pipe |
| 05/16/1989 | CA1254248A1 Pipe coupling |
| 05/10/1989 | EP0315038A2 Method for working joints in concrete tubes, and device for carrying out the method |
| 05/10/1989 | EP0315011A1 Seal for a nozzle discharging in a reservoir, particularly a steam generator |
| 05/09/1989 | US4828183 Butterfly valve for fluid flow line |
| 05/09/1989 | US4827984 Method of repairing or replacing piping and inflatable plug |
| 05/09/1989 | US4827977 Breakaway hose coupling |
| 05/09/1989 | US4827961 High velocity fluid swivel joint coupling |
| 05/09/1989 | US4827960 Dual fluid path breakaway swivel coupling |
| 05/09/1989 | CA1253813A1 Lubricant delivering coupling |
| 05/05/1989 | WO1989003957A1 Tube for lining of pressure water pipes |