| Patents for F16L 47 - Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics (7,981) |
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| 04/24/1991 | EP0423196A1 Composite thread coupling for reinforced pipe. |
| 04/16/1991 | US5007666 Tongue and groove snap-fit pipe coupling |
| 04/16/1991 | CA1283139C Metal to composite tubular joint |
| 04/10/1991 | EP0421798A1 A throttle modulator assembly |
| 04/10/1991 | EP0420933A1 Methods and devices which make use of conductive polymers to join articles. |
| 04/03/1991 | CN1050434A 管接头 Fittings |
| 03/31/1991 | WO1991004845A1 Welding muff and process for manufacturing it |
| 03/31/1991 | CA2042367A1 Welding muff and process for manufacturing it |
| 03/26/1991 | US5002822 Composites to form a fabric to form pressure resistant splice case for telecommunication cables |
| 03/20/1991 | CN1012101B Method for manufacturing plastic pipe body connected with sealing body of thermoplastic elastomer |
| 03/13/1991 | EP0416451A2 Pipe joint |
| 03/13/1991 | CN1011954B Method for manufacturing assembly of plastic pipe body connected with sealing body |
| 03/12/1991 | US4998326 Balanced clamp structure |
| 03/06/1991 | EP0415012A2 Pipe connection |
| 03/06/1991 | EP0414864A1 Plastic coupling |
| 03/05/1991 | US4997214 Transition fitting |
| 02/27/1991 | EP0414641A1 Fixed point fastening on a pipeline |
| 02/23/1991 | WO1991002918A1 Pipe joint |
| 02/20/1991 | CN1011736B Tubular article |
| 02/19/1991 | US4994655 Electro-fusion joint |
| 02/14/1991 | DE3926662A1 Welding together polypropylene pipes - by using inner sleeve with centre outer rib, heating this and one pipe, pressing pipe over sleeve, cooling , and repeating with second pipe |
| 02/05/1991 | US4990298 Method of forming a wrap around heat shrinkable closure with flexible extension |
| 01/30/1991 | EP0410843A1 Connection joining piece for plastic pipes and mounting method |
| 01/30/1991 | EP0410339A2 Double-walled pipe and method of manufacturing the same |
| 01/25/1991 | CA2021649A1 Tip insert for synthetic pipe material and method of mounting |
| 01/15/1991 | US4984831 Pipe socket and a method of forming a pipe socket |
| 01/10/1991 | WO1991000470A1 Polymeric tube fitting |
| 01/10/1991 | DE3921174A1 Cross-linked thermoplastic pipeline system - welding of individual components occurs while the plastic is still thermoplastic after which moisture initiates the cross-linking |
| 01/09/1991 | EP0406818A1 Method for connecting plastic pipes in a double pipe system, and joint produced by that method |
| 01/02/1991 | EP0405163A1 Plastic piping for ducting reconstruction |
| 01/02/1991 | EP0405030A1 A shrinkable elastomeric sleeve |
| 01/02/1991 | CA1278595C Pipe joint connecting plastic pipes and process of making such joint |
| 12/28/1990 | CA2019405A1 Plastic pipe for sewer pipe reconstruction |
| 12/25/1990 | US4980006 Method for making a fiber-reinforced pipe flange |
| 12/19/1990 | EP0403037A1 Compression fitting |
| 12/19/1990 | CN1047827A Electro-welding element of conductive plastic and electro-welding coupling including said element for interconnecting pieces made of plastic |
| 12/19/1990 | CN1047826A Electro-welding sleeve fabrication method, device for implementing it and sleeves obtained by the method |
| 12/19/1990 | CN1010873B Device for accomplishing at least liquid tight joint and method for manufacturing such device |
| 12/12/1990 | EP0402200A2 Electro-fusion element of conductive plastics material and socket for electro-fusion of plastic parts made therewith |
| 12/12/1990 | EP0402199A2 Process and apparatus for making an electro-fuseble sleeve and sleeves made thereby |
| 12/09/1990 | CA2018553A1 Electro-welding element made of conductive plastic material and electro-welding fitting for electro-welding element made of such material |
| 11/28/1990 | EP0399081A1 Electrofusion coupler having a content of thermoplastic material |
| 11/28/1990 | EP0398892A1 Method for manufacturing a composite seal, pipe part provided with such a seal and also a pipe connection comprising such a composite seal. |
| 11/27/1990 | US4974245 System for the assembly of a metal joining piece and a high pressure composite material tube notably applications for equipment used in the oil industry |
| 11/22/1990 | EP0398527A2 Electrofusion marker |
| 11/22/1990 | EP0397654A1 Tube joint |
| 11/22/1990 | DE3916450A1 Externally threaded plastomer component for HV switch - has annular slot receiving threaded metal ring with dovetail width |
| 11/20/1990 | US4971366 For use in an underground water sprinkling system |
| 11/19/1990 | CA2013791A1 Electrofusion marker |
| 11/15/1990 | WO1990013411A1 Sleeve-shaped weld connecting piece of thermoplastic material with weld indicator element, and welded joint formed therewith |
| 11/14/1990 | CN1046967A Pipe joint and its coupling method |
| 11/09/1990 | WO1990013410A1 Identification of electro-fusion fittings |
| 11/07/1990 | EP0396273A2 Electro-fusion fittings |
| 11/06/1990 | WO1990013299A1 Fertility enhancement |
| 11/06/1990 | CA2054197A1 Fertility enhancement |
| 10/30/1990 | US4966397 Flexible pipe saddle |
| 10/17/1990 | EP0322508B1 Pipe joint element |
| 10/10/1990 | EP0391521A2 A device having a porous polytetrafluoroethylene tube secured in an apertured wall, and the manufacture thereof |
| 10/09/1990 | US4961978 Novel closure device for shrinkwraps |
| 10/09/1990 | CA1275058A1 Branch members for soil and waste systems |
| 10/04/1990 | WO1990011467A1 Plastic coupling |
| 10/03/1990 | EP0390748A2 Welding socket |
| 10/03/1990 | EP0390747A2 Sealing connection for multilayer plastic pipes |
| 10/03/1990 | EP0390746A2 Demountable sealing connection between one or more plastic pipes and a joining piece |
| 09/25/1990 | US4958857 Welding seal assembly |
| 09/20/1990 | WO1990010816A1 Tubular coupling and method of forming same |
| 09/20/1990 | WO1990010813A1 Swivel lug pipe joint connections |
| 09/20/1990 | DE3908137A1 Pipe connection |
| 09/18/1990 | US4957570 Butt-welding of pipes |
| 09/18/1990 | CA1274151A1 Shaped woven fabrics |
| 09/16/1990 | CA2012113A1 Tubular coupling and method of forming the same |
| 09/12/1990 | EP0386517A1 Conduit |
| 09/12/1990 | EP0386516A1 Sealing ring |
| 09/12/1990 | EP0386419A1 Process to manufacture weatherable monolithic coverings, and composites useful therefore |
| 09/11/1990 | US4956138 Method of manufacturing an electrofusion coupler |
| 09/11/1990 | US4955970 Method of forming a joint between a connecting piece and a product formed of composite material, said joint, and said connecting piece for forming said joint |
| 09/11/1990 | US4955951 Boring apparatus |
| 09/06/1990 | CA2011432A1 Closure device for shrinkwraps |
| 09/06/1990 | CA2009374A1 Processes to manufacture weatherable monolithic coverings, and composites useful therefor |
| 09/05/1990 | EP0385839A1 Device for the disconnectible mechanical connection between the end of a composite tube and a terminal piece |
| 08/28/1990 | US4951976 Connector for soft-walled conduit such as polyurethane hose |
| 08/28/1990 | CA1273446A1 Heat recoverable article comprising conductive polymer compositions |
| 08/22/1990 | EP0382971A1 Adjustable pipe bend with electrofusion facility |
| 08/22/1990 | CN1009303B Method and apparatus for making welded joint made of plastic |
| 08/21/1990 | US4950001 Graduated friction anchor |
| 08/16/1990 | EP0382593A2 System for joining insertable tubular elements together by welding |
| 08/16/1990 | DE3943417A1 Detachable push-in joint for pipes - with (chlorinated) PVC or socket, lip seal ring and screw cap |
| 08/08/1990 | EP0381357A1 Pipe couplings |
| 08/08/1990 | EP0380970A2 Pipe connection and process for manufacturing the same |
| 08/07/1990 | US4947012 Electrofusion marker |
| 08/07/1990 | CA1272364A1 Device for connecting elongate objects |
| 08/07/1990 | CA1272363A1 Adapting piece of thermoplastic material |
| 08/02/1990 | DE3902642A1 Device for the releasable connection of a line |
| 08/02/1990 | CA2008892A1 Pipe connection and a method of making same |
| 08/01/1990 | EP0379812A1 Connecting and joining block between pipelines made of soft and elastomeric material, process and device for manufacturing the same |
| 07/18/1990 | EP0378406A2 Electrofusion joint and hot water supply header using the same |
| 07/12/1990 | WO1990007671A1 Pipe coupling |
| 07/11/1990 | EP0377382A1 Method for integrating a metallic sleeve in a tube of a wrapped composite material |
| 07/11/1990 | CN1043659A Device for detecting, during welding, variations in physical state of plastic material in coupling piece for joining pipes |
| 07/10/1990 | US4940820 Wraparound recovery article |