| Patents for F16L 25 - Construction or details of pipe joints not provided for in, or of interest apart from, groups (6,088) |
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| 03/28/1990 | EP0359939A2 Air spring with a pipe connection system |
| 03/20/1990 | US4909547 Coupler arrangement |
| 03/13/1990 | US4907830 For a corrugated pipe |
| 03/06/1990 | US4906027 Insulating joint for metal pipelines |
| 02/27/1990 | US4904002 Fluid coupling |
| 02/20/1990 | US4901975 Fluid delivery equipment |
| 02/06/1990 | US4898395 Device for sealing refueling opening |
| 01/24/1990 | CN1039096A Corrugated pipe, method of forming corrugated pipe and apparatus for manufacturing same |
| 01/11/1990 | DE3822159A1 Plug-in connection which can be pre-mounted on the socket side |
| 01/10/1990 | EP0349778A2 A corrugated pipe, a method of forming the corrugated pipe and an apparatus for manufacturing the same |
| 01/03/1990 | EP0194278B1 Lubricant delivering coupling |
| 01/02/1990 | US4891169 Transition duct for centrifugal fan |
| 01/02/1990 | CA1264149A1 Repair kit for hydraulic tubing |
| 01/02/1990 | CA1264111A2 Clamping ring for use in pipe joints |
| 12/28/1989 | DE3821618A1 Socket part for a plug-in socket, comprising two sealing elements, on pipes |
| 12/27/1989 | CN1006244B Coupling for corrugated conduit |
| 12/19/1989 | US4887852 Pipe connector |
| 12/19/1989 | US4887847 Tube Connector |
| 12/13/1989 | CN1006086B Sealing ring |
| 11/21/1989 | US4881909 Hose assembly for canister vacuum cleaner |
| 11/16/1989 | WO1989011056A1 Tubing collar |
| 11/14/1989 | US4880257 Pressure compensation multi tubular safety joint |
| 11/08/1989 | EP0340338A1 Tube connection |
| 11/02/1989 | EP0339234A1 Ventilation hose |
| 10/24/1989 | US4875719 Universal hose connector |
| 10/18/1989 | EP0337055A2 Coupling for fire hose with built-in communication cable |
| 10/11/1989 | EP0336290A2 Buried pipeline, especially for waste water |
| 10/03/1989 | US4871198 Corrugated plastic pipe coupling |
| 09/26/1989 | CA1260983A1 Oilwell tubing connector |
| 09/12/1989 | US4865355 Pipe blocking system |
| 09/12/1989 | CA1259353A1 Insulated saddle flange for storage tanks |
| 09/06/1989 | EP0331116A1 Conduit connector |
| 08/29/1989 | US4861074 Tubing collar |
| 08/22/1989 | US4858958 Slip-joint coupling |
| 08/17/1989 | DE3803668A1 Connection of two ends of gas pipes, inner sleeve for this connection and process for producing this connection |
| 07/26/1989 | CN1034255A Pipe joint element |
| 07/25/1989 | US4850615 Multi-pipe trap adapter |
| 07/20/1989 | DE3744416A1 Insulating pipe connection |
| 07/18/1989 | US4848957 Coupling for plastic tube |
| 07/18/1989 | US4848804 Dielectric coupling |
| 07/05/1989 | EP0322508A1 Pipe joint element |
| 06/13/1989 | CA1255715A1 Clamping ring for use in a pipe joint |
| 06/07/1989 | EP0318994A1 Device for connecting pipes or lengths of ducts by abutment |
| 06/07/1989 | EP0318735A1 Connection piece for ducts |
| 06/07/1989 | EP0173691B1 Pipe joint |
| 06/06/1989 | US4836581 Device for making a sealed connection |
| 06/06/1989 | US4836580 Conduit connector |
| 06/06/1989 | CA1255239A1 Tubular article |
| 05/16/1989 | CA1254247A1 Insulating coupling for drill collars and method of manufacture thereof |
| 05/16/1989 | CA1254108A1 Valve manifold having removable flange |
| 05/09/1989 | CA1253813A1 Lubricant delivering coupling |
| 04/25/1989 | US4824147 Electrically insulated pipe joint |
| 04/19/1989 | EP0311635A1 Method of joining tubes having a corrugated wall of plastic material. |
| 04/18/1989 | US4822077 Pipe coupling reducing insert |
| 04/12/1989 | EP0310773A1 Break down resistant connection with differentiated rubberised sorts in the flange region of pipe-lines |
| 04/11/1989 | US4819974 Pipe coupling |
| 04/11/1989 | CA1252400A1 Conductive flanges for pipe fittings |
| 04/05/1989 | EP0310271A1 An anti-static non-metallic pipe or fitting |
| 04/05/1989 | EP0310177A2 A detachable connection |
| 04/04/1989 | US4817993 Dielectric joint, particularly for metallic conduits for liquids and/or gases |
| 03/22/1989 | EP0307522A1 Apparatus for conducting hot gases from an exhaust pipe |
| 03/15/1989 | EP0236295B1 A filtering device for vehicle exhaust |
| 03/09/1989 | DE3830874A1 Pipe coupling |
| 03/09/1989 | DE3726778A1 Plug-in coupling, especially for vacuum cleaners |
| 02/28/1989 | US4807913 Heat blocking junction |
| 02/21/1989 | US4805932 Joint secured against sliding |
| 02/14/1989 | US4804209 Plummer's union |
| 02/08/1989 | EP0302690A2 Tube connector |
| 01/31/1989 | US4801158 Pipe joint |
| 01/25/1989 | EP0300763A1 Fluid delivery equipment |
| 01/24/1989 | US4799714 Sleeve type casing head adapter |
| 01/17/1989 | US4798769 Electrode supporting conduit tube for electrical heating of underground hydrocarbon resources |
| 01/17/1989 | US4798405 Assembly for electrically non-conductively interconnecting tube ends |
| 01/03/1989 | US4795572 Hermetic sealing in papermaking |
| 01/03/1989 | US4795197 Coupling for seed and fertilizer hoses |
| 12/28/1988 | EP0296788A2 Electrical conductor arrangements for pipe system |
| 12/27/1988 | US4794049 Electrode supporting conduit tube for electrical heating or underground hydrocarbon resources |
| 12/22/1988 | DE3718517A1 Insulating connections for pipelines |
| 12/22/1988 | DE3718516A1 Insulating connection for pipelines |
| 12/20/1988 | US4791993 Fire protection system |
| 12/20/1988 | CA1247164A1 Liquid piping saddle assembly connecting a branch pipe to a main pipe |
| 12/13/1988 | US4790570 Electrically insulated joint for metal pipes |
| 12/06/1988 | CA1246118A1 Pipe joint |
| 11/29/1988 | US4787421 Flow path defining means and method of making |
| 11/24/1988 | DE3715622A1 Joint seal on prefabricated shaped (purpose-made) concrete parts, in particular pipes |
| 11/22/1988 | US4786086 Fuel cell stack electrically insulated fluid connector |
| 11/22/1988 | US4785853 Conduct pipe covered with electrically insulating material |
| 11/22/1988 | US4785852 Conduct pipe covered with electrically insulating material |
| 10/25/1988 | US4779904 Couplings for connecting vehicle exhaust tail pipes to exhaust conduits for removing vehicle exhaust gases |
| 10/25/1988 | US4779903 Sealing ring |
| 10/18/1988 | CA1243370A1 Current-carrying connection between two elongate conductors of an electrical installation |
| 10/11/1988 | US4776600 Dielectric pipe flange gasket |
| 10/06/1988 | WO1988007644A1 Flexible pipe coupling |
| 10/05/1988 | EP0285387A2 Tube coupling |
| 09/21/1988 | EP0282907A2 Cleaning conduits for waste water or sewage |
| 09/21/1988 | EP0171416B1 Insulating coupling for drill collars and method of manufacture thereof |
| 09/15/1988 | DE3806971A1 Einrichtung zum einsetzen eines rohrartigen elementes in eine rohrleitung Means for using a tubular element into a pipeline |
| 09/07/1988 | CN88100751A Improved weld joint for soot blower lance tube |
| 09/06/1988 | CA1241679A1 Pipe joint |
| 08/31/1988 | EP0280219A1 Improved weld joint for soot blower lance tube |