| Patents for F16L 7 - Supporting pipes or cables inside other pipes or sleeves, e.g. for enabling pipes or cables to be inserted or withdrawn from under roads or railways without interruption of traffic (1,189) |
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| 11/15/1994 | US5363931 Drilling stabilizer |
| 11/10/1994 | DE4315322A1 Skid ring and process for the production thereof |
| 11/09/1994 | EP0406377B1 Method for repairing pipes |
| 11/01/1994 | US5360291 Method for laying cable or hose in channel and channel therefor |
| 09/28/1994 | CN1026024C Technique for sealing |
| 09/21/1994 | EP0616159A1 Device for keeping objects spaced apart |
| 09/20/1994 | US5348097 Device for carrying out measuring and servicing operations in a well bore, comprising tubing having a rod centered therein, process for assembling the device and use of the device in an oil well |
| 09/20/1994 | US5348084 Device for carrying out measuring and servicing operations in a well bore and use in an oil well |
| 09/14/1994 | CN1092139A Environmental sealing |
| 09/13/1994 | CA1331996C Sealing device |
| 06/08/1994 | EP0599909A1 Technique for sealing. |
| 05/26/1994 | WO1994011663A1 Self locking slitted corrugated tubing |
| 05/18/1994 | EP0437588B1 Assembly comprising an extension tube and a sleeving conduit inside it |
| 03/17/1994 | WO1994005943A1 Environmental sealing |
| 03/09/1994 | CN1083571A Environmental sealing |
| 03/01/1994 | US5290074 Multi-adjustable joint assembly |
| 03/01/1994 | US5290073 Expansion seal for cable pipe |
| 02/10/1994 | DE4241063C1 Ship's deck supply cables entrance - comprises decking plate and bent tube mfd. of corrosion-resistant steel forming duct for cables and their couplers |
| 01/26/1994 | EP0580271A2 Drill pipe |
| 01/26/1994 | EP0579641A1 Environmental sealing. |
| 01/25/1994 | CA2097366A1 Drill pipe |
| 01/12/1994 | EP0578270A1 Enhancing pipes |
| 12/01/1993 | EP0571518A1 Facsimile machine with diverse communication facilities |
| 11/30/1993 | US5266743 Seal for an electric cable having an insulating sheath wrapped by exposed electrical conductors and method for sealing the electric cable to a surrounding enclosure |
| 11/04/1993 | DE4313433A1 Pipe centring clamp in shaft - has clamp with outwardly sprung straps with steel band having endstop inserted through |
| 10/13/1993 | EP0565287A1 Undulated conduit anchored in coiled tubing |
| 10/01/1993 | CA2092958A1 Anchor wavey conduit in coiled tubing |
| 09/16/1993 | DE4211081C1 Multiple drill pipe - allows limited inner pipe projection to facilitate coupling to other drill pipes |
| 09/01/1993 | EP0558071A1 Coaxial pipe |
| 08/04/1993 | EP0553936A2 Method for establishing a pipeline system and pipeline system according to this method |
| 08/03/1993 | USRE34332 Assembly for connecting multi-duct conduits |
| 07/22/1993 | WO1993014335A1 Inflatable duct seal as environmental sealing |
| 07/13/1993 | US5226506 Colling-lubricating device |
| 06/22/1993 | US5220961 Assembly comprising an extension tube and a sleeving conduit inside this tube |
| 06/22/1993 | CA1319333C Supports for double-containment thermoplastic pipe assemblies |
| 05/19/1993 | EP0542584A1 Flexible tubing containing a centred line for transfer of energy or information and method of manufacturing such tubing |
| 04/07/1993 | EP0535271A1 Device for cooling and lubrificating |
| 04/06/1993 | US5199724 Matching seal element for closing an opening in a cable fitting or pipe line |
| 03/30/1993 | US5197518 Centering support assembly for double containment pipe systems |
| 03/24/1993 | CN1070252A Technique for sealing |
| 03/09/1993 | CA1314240C Cable clamp for coiled tubing |
| 02/18/1993 | WO1993003302A1 Technique for sealing |
| 02/18/1993 | CA2113923A1 Technique for sealing |
| 01/07/1993 | WO1993000541A1 Centering support assembly for double containment pipe systems |
| 01/07/1993 | DE4205574A1 Laying cable or hose in conduit - feeding guide element along guide channel integral with conduit to draw cable along |
| 12/23/1992 | EP0519263A1 Sealing element |
| 12/02/1992 | CN2123672U Clamping apparatus for circular pipe |
| 10/29/1992 | WO1992019034A1 Environmental sealing |
| 09/30/1992 | EP0506142A1 A seal |
| 09/09/1992 | EP0400034B1 Method for the protection of a coiled tube heat exchanger |
| 08/13/1992 | WO1992014335A1 Facsimile machine with diverse communication facilities |
| 08/13/1992 | CA2103915A1 Facsimile machine with diverse communication facilities |
| 07/07/1992 | US5127441 Coaxial piping system |
| 06/11/1992 | DE4038737A1 Guide piece for pipes, especially of steam generator - consists of spacer pieces in guides supported by frame, with telescopic guide piece and sleeve |
| 06/10/1992 | EP0489084A1 Environmental sealing |
| 06/09/1992 | CA1303017C Inner pipe member for dual-wall drill pipe assembly |
| 01/15/1992 | EP0466637A1 Low-temperature transfer line |
| 01/14/1992 | US5079883 Box intended for passing pressurized fluids through masonry work |
| 12/10/1991 | US5071140 Self-pressurized gasket seal |
| 12/03/1991 | US5069255 Pipeline casing insulator |
| 10/08/1991 | CA1290263C Double-containment thermoplastic pipe assembly |
| 09/17/1991 | CA1289087C Wall feedthrough |
| 09/03/1991 | US5044822 Open bottom pit seal |
| 08/29/1991 | DE4105625A1 Inflatable seal for use e.g. between cable and duct - consists of e.g. laminate of plastic films which is folded over, suitably bonded to form envelope |
| 08/20/1991 | US5041111 Operating insert for a resectoscope with sealing means |
| 08/14/1991 | EP0440903A1 Adaptable sealing element for closure of an entrance opening in cable fittings, conduits or the like |
| 07/24/1991 | EP0437588A1 Assembly comprising an extension tube and a sleeving conduit inside it. |
| 06/04/1991 | US5020810 Liquid sight monitor with multi-contact insert |
| 05/28/1991 | US5018260 Supports for double-containment thermoplastic pipe assemblies |
| 05/28/1991 | CA1284457C Inner ceramic tube in particular for a glove finger-shaped radiant tube for recirculation |
| 02/27/1991 | EP0414641A1 Fixed point fastening on a pipeline |
| 02/26/1991 | WO1991002917A1 Environmental sealing |
| 02/26/1991 | CA2065382A1 Environmental sealing |
| 02/08/1991 | WO1991002137A1 Assembly comprising an extension tube and a sleeving conduit inside it |
| 01/23/1991 | EP0409283A1 Supports between coaxial tubes and device for assembly thereof |
| 12/05/1990 | EP0400034A1 Method for the protection of a coiled tube heat exchanger. |
| 11/28/1990 | EP0399123A1 Supports for double-containment thermoplastic pipe assemblies |
| 11/20/1990 | US4971147 In a well treatment system |
| 10/18/1990 | WO1990012236A1 Seals for co-axial tubes |
| 09/13/1990 | DE3907340A1 Sealing ring of polymeric material |
| 07/26/1990 | DE3931058C1 Pipeline laying method - outer pipe casings are welded before inner flow pipes, and latter pushed into already laid pipe casing |
| 07/12/1990 | WO1990007672A1 Method for repairing pipes |
| 06/05/1990 | US4930544 Double-containment thermoplastic pipe assembly |
| 05/29/1990 | US4928736 Pipeline casing insulator |
| 05/08/1990 | US4923222 Casing sealing apparatus |
| 05/02/1990 | EP0365817A1 Resectoscope with a cutting loop |
| 04/10/1990 | US4915121 Method for purging gas |
| 04/03/1990 | US4913466 Inner pipe member for dual-wall drill pipe assembly |
| 02/07/1990 | EP0179906B1 Fluid fitting with high temperature capabilities |
| 01/30/1990 | US4896701 Underground pipe support and spacer |
| 01/25/1990 | WO1990000655A1 Rain water drainage system |
| 01/10/1990 | EP0350394A1 Rainwater drainage system |
| 12/26/1989 | US4889450 Guidance and protection system for the laying of pipes |
| 10/03/1989 | US4870792 Passage of pressurized fluids through masonry work |
| 09/12/1989 | US4865138 Drill string stabilizer |
| 08/22/1989 | US4858963 Sealing apparatus for concentric conduits |
| 08/16/1989 | EP0328367A2 Duct seal |
| 08/16/1989 | EP0328366A1 Resilient device |
| 08/10/1989 | WO1989007022A1 Method for the protection of a coiled tube heat exchanger |
| 08/02/1989 | EP0325697A1 Coaxial pipe |