| Patents for F16L 21 - Joints with sleeve or socket (9,147) |
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| 01/10/1991 | DE3921193A1 Pipe connection for double walled pipes - consists of pipe casing with seal, tension piece, locking pieces |
| 01/09/1991 | CN2069062U Pipe joint without screw |
| 01/09/1991 | CN2069060U Major diameter anticorrosive steel-plastics composite pipes |
| 01/09/1991 | CN1048445A Gasket for leaktight locked joints |
| 01/09/1991 | CN1048444A Gasket with annular anchoring heel |
| 01/07/1991 | CA2015966A1 Casing head connector |
| 01/02/1991 | EP0406145A1 Seal assembly for locked sealed joints |
| 01/02/1991 | EP0406144A1 Seal assembly with an annular anchor bead |
| 01/02/1991 | EP0405163A1 Plastic piping for ducting reconstruction |
| 12/28/1990 | CA2019405A1 Plastic pipe for sewer pipe reconstruction |
| 12/19/1990 | EP0402700A1 Self sealing joint between a pipe end and a sleeve |
| 12/06/1990 | DE3909381A1 Seal |
| 12/05/1990 | CN2066926U Pipe line joint device |
| 12/05/1990 | CN1047557A Seal spacer, join sleeve and seal joint |
| 11/28/1990 | EP0399940A1 Seal and interlocking system for receiving such seal and the seal assembly obtained |
| 11/23/1990 | CA2017289A1 Packing seal, nesting to hold said seal and sealing joint made therefrom |
| 11/07/1990 | EP0395646A1 Root-repelling pipe joints |
| 11/07/1990 | CN2065276U Pipe jointer |
| 10/31/1990 | CN2064853U Loose-joint pipeline accessory |
| 10/18/1990 | WO1990012238A1 Internal expansion coupling device |
| 10/17/1990 | EP0392901A1 Connection for fluid conduits, especially for a high-purity gas |
| 10/17/1990 | EP0392148A2 Pipe connection |
| 10/10/1990 | CN2063600U Quick tube joint |
| 10/10/1990 | CN2063599U Rubber washer lock-on movable joint |
| 10/09/1990 | US4961599 Sealing gland construction for use in hydraulic unit joints |
| 10/09/1990 | CA1275129A1 Axially split clamp for push-on couplings |
| 10/09/1990 | CA1275128A1 Pipe coupling |
| 10/03/1990 | EP0390746A2 Demountable sealing connection between one or more plastic pipes and a joining piece |
| 09/26/1990 | EP0389462A1 Pipe joint for air conditioners |
| 09/25/1990 | US4958861 Tube coupling |
| 09/25/1990 | US4958859 Pre-assembly muff for the cutting or clamping ring of a pipe coupling |
| 09/13/1990 | DE3907477A1 Plug-in connection which is secured with respect to axial displacement and is intended for socket pipes |
| 09/12/1990 | EP0386516A1 Sealing ring |
| 09/07/1990 | WO1990010171A1 Pipe joint |
| 09/05/1990 | EP0309457B1 Coupling for coupling tubular members |
| 08/28/1990 | US4951978 Heat-recoverable composition coupling device |
| 08/07/1990 | US4946213 Tube couplings |
| 08/07/1990 | US4946175 Sealing ring for a pipe joint |
| 08/07/1990 | CA1272367A1 Clamping sleeve with a clamping screw |
| 08/01/1990 | CN2059955U Quickly coupling joint |
| 07/25/1990 | CN2059704U Lock and press type pipe joint |
| 07/19/1990 | DE3900873A1 Plug-in socket seal which is concreted into a pipe socket |
| 06/27/1990 | EP0374667A1 Process and installaton for making a composite pipe in a rotating mould |
| 06/27/1990 | CN2058716U Cast-iron pipe orifice with circular section rubber ring |
| 06/26/1990 | US4936609 Connector for pipe joint |
| 06/23/1990 | CA2006518A1 Method and apparatus for producing a composite pipe in a rotating drum |
| 06/20/1990 | EP0373985A1 Plug-in connection for flexible hose with an O-ring rolling on a small angled cone |
| 06/19/1990 | US4934716 Pipe sealing ring and method of manufacturing the same |
| 06/13/1990 | DE3841330A1 Elastic sealing ring for a plug-in connection designed as a sliding ring seal |
| 06/12/1990 | CA1270277A1 Pipe lap joint with improved pull-apart strength |
| 06/05/1990 | US4930816 Joining structures for metal pipes |
| 06/05/1990 | CA1270016A1 Pipe lap joint with collapsible sealing zone and band clamp |
| 05/22/1990 | US4927189 Internal expansion coupling device |
| 05/15/1990 | US4924913 Tube coupling system |
| 05/09/1990 | EP0367419A1 Collet type connector |
| 05/08/1990 | CA1268719A1 Tubular article |
| 04/25/1990 | CN2056472U Mufual interlocking type water pipe joint |
| 04/24/1990 | US4918940 Air conditioning apparatus |
| 04/18/1990 | EP0363384A1 Plastic tube with solid cross-ribs on the outer surface, a moulding device therefor; installation comprising such a device and a method for moulding a plastic tube |
| 04/17/1990 | CA1267853A1 Drainage element |
| 04/11/1990 | CN1041213A Joint for pipelines |
| 04/11/1990 | CN1041128A Plastic pipe body of thermoplastic material connected with sealing body of thermoplastic elastomer, pipe part or fitting connected with such plastic pipe body and method and mould for manufacturing |
| 04/05/1990 | DE3832832A1 Fluid-tight pipe-joint inner seal, in particular for socket pipes or socket-free pipes, e.g. advancement pipes, consisting, in their material in the static core, of concrete, reinforced concrete, prestressed concrete or other building materials, e.g. asbestos cement, for lined or non-lined pipes |
| 04/04/1990 | EP0360946A1 Coupling for butt-joining tubes |
| 04/03/1990 | US4913467 Connector for connecting small diameter pipe |
| 03/28/1990 | CN1040860A Connector for quick loading and unloading pipeline |
| 03/22/1990 | WO1990002902A1 A device and a method of providing a joint between two components and the use of such a joint |
| 03/21/1990 | EP0222784B1 Pipe lap joint with collapsible sealing zone and band clamp |
| 03/20/1990 | US4909519 Pipe joint compression seal |
| 03/14/1990 | EP0358256A1 A sealing and protective device for pipes |
| 03/14/1990 | CN2054514U Non-threaded connection pipe head |
| 03/07/1990 | CN1007082B Jointing disposition between tubes having male and sleeve |
| 03/06/1990 | US4906010 Joint for connecting a spigot to the bell of a pipe or coupling |
| 02/27/1990 | US4903996 Fastener system for pipe coupling bands |
| 02/22/1990 | WO1990001655A1 Clamp for coupling and sealing pipe joints |
| 02/20/1990 | US4902048 Joint structure for jointing metal pipes at their ends |
| 02/15/1990 | DE3826114A1 Sealing sleeve for a pipe coupling |
| 02/08/1990 | DE3826622A1 Seal for socket pipe connections |
| 02/06/1990 | US4898407 Coupling for pipes with plain ends |
| 02/06/1990 | US4897963 Connector device for two reactor containments |
| 01/30/1990 | US4896903 Segmented pipe joint retainer glands |
| 01/23/1990 | US4895397 Clamp |
| 01/23/1990 | US4895396 Connector for connecting small diameter pipe |
| 01/23/1990 | CA1264528A1 Method and apparatus for joining pipe |
| 01/16/1990 | US4893843 Lubricant-free elastomeric gasket |
| 01/10/1990 | CN2050917U Coupling tube with sealing and vibrating-proof |
| 01/09/1990 | CA1264342A1 Separation preventive pipe joint |
| 01/03/1990 | CN2050522U Sealed tensile pipe coupling |
| 12/20/1989 | CN2049724U Water pipe joint convenient for demounting and mounting |
| 12/14/1989 | DE3819961A1 Sealing element for sockets of two-part plug-in sockets on pipes |
| 12/13/1989 | CN1006086B Sealing ring |
| 12/12/1989 | US4886304 Abrasive grip pipe coupling |
| 12/07/1989 | DE3818064A1 Sealing on precast concrete compound units which can be plugged together |
| 11/29/1989 | EP0343677A1 Sealing means between two interengaging concrete pre-casts |
| 11/29/1989 | CN1005925B Annular disk-shaped clamp element |
| 11/28/1989 | CA1263424A1 Sealing element for cast iron piping joints |
| 11/28/1989 | CA1263419A1 Pipe joint seal |
| 11/23/1989 | DE3815843A1 Pipes and similar shaped parts consisting of concrete having a corrosion-resistant inner lining and having a partially flexible interconnection |
| 11/22/1989 | CN2048155U Pipe connection device of pipe line |
| 11/16/1989 | DE3815654A1 Adaptation and transition ring for spigots of plug-in sockets K or the like on stoneware or similar socket pipes |