| 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F16L 7 - Supporting pipes or cables inside other pipes or sleeves, e.g. for enabling pipes or cables to be inserted or withdrawn from under roads or railways without interruption of traffic (1,189) |
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| 12/24/1997 | CN1168711A Apparatus for movement along an underground passage and method using same |
| 12/23/1997 | US5700012 Seal insert for cable connections |
| 12/18/1997 | WO1997047910A1 Connector for tubular members |
| 11/25/1997 | CA2006504C Method for enhancing pipes |
| 11/04/1997 | US5683211 Fiber optic saddle |
| 09/25/1997 | WO1997035134A1 Convoluted protective hose |
| 09/17/1997 | EP0795709A1 Switch and separating device used with a conduit, optionally already occupied by cables, and related pushing apparatus |
| 09/11/1997 | DE19608225A1 Resilient support for pipe carrying hot media |
| 08/20/1997 | CN1035687C Article sealing |
| 08/07/1997 | DE19604147A1 District steam heating lagged pipelines seal at junctions |
| 07/23/1997 | EP0785387A1 Method for installing a tube or a bundle of tubes in an existing tubular duct |
| 07/16/1997 | EP0784179A1 Spacing element for fluid carrying conduits leading through protective piping |
| 07/09/1997 | EP0579641B1 Environmental sealing |
| 06/03/1997 | US5635675 Bendable protective tube for buried cables |
| 04/09/1997 | EP0767522A1 Gasket for sealing cable entry |
| 04/03/1997 | WO1997012169A1 Coupling assembly for multi-duct conduits |
| 04/03/1997 | CA2232987A1 Coupling assembly for multi-duct conduits |
| 03/25/1997 | US5613559 Decentralizing centralizing locating and orienting subsystems and methods for subterranean multilateral well drilling and completion |
| 03/20/1997 | WO1997010462A1 Flow line segment with non-metallic pipe collar |
| 02/05/1997 | CN2246741Y Exhaust unit for prestressed pipe |
| 01/14/1997 | US5593123 Vacuum system components |
| 01/14/1997 | US5592975 Glide tube ring for tube-in-tube systems |
| 01/09/1997 | WO1997001017A1 Insulated and/or concentric coiled tubing |
| 01/07/1997 | US5590690 Centering support for double-containment pipe assembly |
| 11/21/1996 | WO1996036831A1 Annular separators for double walled pipe structures |
| 11/14/1996 | WO1996035904A1 Device for sealing an annular gap |
| 11/14/1996 | DE19601288A1 Vorrichtung zum Abdichten eines Ringraumes Device for sealing an annular space |
| 11/14/1996 | DE19516731A1 Pipes, esp. for coolant or heating fluid, fixed to the vehicle body |
| 11/13/1996 | EP0742400A1 Multiple hose for electro-pneumatic applications |
| 11/12/1996 | US5574571 Facsimile machine with diverse communication facilities |
| 11/05/1996 | US5570723 Support system and method for jacketed multiple cryogenic pipes for cyrogenic fluid transfer |
| 10/31/1996 | DE19515395A1 One piece slide runner ring for pipe systems and bushings with closure pieces at both ends |
| 10/22/1996 | US5566763 Decentralizing, centralizing, locating and orienting subsystems and methods for subterranean multilateral well drilling and completion |
| 10/22/1996 | US5566722 Self locking slitted corrugated tubing |
| 10/15/1996 | US5564503 Methods and systems for subterranean multilateral well drilling and completion |
| 10/08/1996 | US5562295 Environmental sealing |
| 10/01/1996 | US5560618 Technique for sealing |
| 09/26/1996 | DE19537069A1 Improved sliding runner rings |
| 09/03/1996 | US5551704 Seal for enhancing pipes |
| 07/10/1996 | EP0658242B1 Environmental sealing |
| 06/19/1996 | EP0599909B1 Technique for sealing |
| 06/11/1996 | US5525007 For connecting a branch service line to an underground sewer main |
| 05/29/1996 | EP0713996A1 Sealing flange, in particular for lining the insides of pipelines |
| 05/23/1996 | CA2163505A1 Sealing flange, in particular for internal lining of pipes |
| 05/22/1996 | EP0712472A1 Method to prepare for the installation of units using channels in dwellings, and multiple channel means to perform said method |
| 05/15/1996 | CN1122525A Cable protection device |
| 05/01/1996 | EP0709542A2 Anchored wavy conduit in coiled tubing |
| 04/24/1996 | EP0708287A1 Pipe assembly |
| 04/18/1996 | WO1996011324A1 Apparatus for movement along an underground passage and method using same |
| 04/16/1996 | US5507346 Composite well flow conductor |
| 03/28/1996 | DE4434522A1 Spacing cuff for double pipeline in hydraulic system |
| 03/26/1996 | US5501281 Torque-resistant, seal setting force-limited, hydraulically settable well packer structure and associated methods |
| 03/19/1996 | US5499681 Centralizing liner hanger method and system for subterranean multilateral well drilling |
| 03/19/1996 | US5499680 Diverter, diverter retrieving and running tool and method for running and retrieving a diverter |
| 03/13/1996 | EP0701045A2 Multilateral well drilling and completion method and apparatus |
| 03/13/1996 | EP0701044A2 Apparatus and method for hanging a downhole liner |
| 03/13/1996 | EP0701043A2 Torque-resistant well packer |
| 03/13/1996 | EP0701042A2 Decentring method and apparatus, especially for multilateral wells |
| 03/13/1996 | EP0701041A2 Well flow conductor and manufacture thereof |
| 03/13/1996 | EP0701040A2 Downhole diverter and retrieving tool therefor |
| 03/05/1996 | US5496134 Sliding skid ring for pipe feedthroughs |
| 02/27/1996 | CA2156983A1 Centralizing liner hanger method and system for subterranean multilateral well drilling |
| 02/27/1996 | CA2156981A1 Composite well flow conductor for subterranean multilateral well drilling and completion and method of manufacture therefor |
| 01/09/1996 | US5482403 Sewer construction and pipe encasement therefor |
| 01/09/1996 | US5482088 Supports double-containment systems with axial-guiding and flexibility |
| 01/09/1996 | US5482076 Enhancing pipes |
| 11/29/1995 | EP0683845A1 Drill pipe |
| 11/21/1995 | US5468026 Spacer clip for chimney |
| 10/31/1995 | US5463187 For housing subterranean communication lines |
| 10/31/1995 | US5462312 Tubing coupling enclosure |
| 10/17/1995 | US5458438 Insulating pipe spacers |
| 10/05/1995 | DE4410706A1 Corrugated hose for containing pipes or leads |
| 09/13/1995 | CN2207499Y Support for underground gas pipeline |
| 08/23/1995 | EP0668463A1 Spacer |
| 08/17/1995 | WO1995022029A1 Method to prepare for the installation of units using channels in dwellings, and multiple channel means to perform said method |
| 08/15/1995 | US5441082 Casing spacer |
| 08/01/1995 | US5437087 Method of attaching an interduct to aduct |
| 07/25/1995 | US5435351 Anchored wavey conduit in coiled tubing |
| 07/19/1995 | EP0663554A2 Sliding ring and method for manufacturing the same |
| 07/18/1995 | US5433252 Fluid containing coaxial tube for control systems |
| 07/11/1995 | US5430978 Vacuum hose storage apparatus |
| 06/29/1995 | WO1995017575A1 Drill pipe |
| 06/27/1995 | USRE34978 Assembly for connecting multi-duct conduits |
| 06/21/1995 | EP0658242A1 Environmental sealing. |
| 06/08/1995 | WO1995015447A1 Cable handling chain |
| 05/30/1995 | CA2110210A1 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 |
| 04/27/1995 | DE4404765C1 Supporting band for an outer casing of a metallic chimney pipe |
| 04/20/1995 | WO1995010872A1 Flexible duct for underground cable |
| 04/11/1995 | US5404914 Centering support for double containment pipe assembly |
| 04/04/1995 | US5402830 Thermal pipe guard |
| 03/30/1995 | DE4332689A1 Process and apparatus for laying pipes |
| 03/28/1995 | US5400828 Double-containment piping supports for improved annulus flow |
| 02/16/1995 | DE4326633A1 Drinks-line system and appertaining mounting aid |
| 02/01/1995 | EP0637115A1 Protective conduit with reduced friction |
| 01/18/1995 | EP0634609A2 Device for mounting a spacer on an internal pipe |
| 01/11/1995 | EP0633388A2 Drilling stabilizer |
| 01/08/1995 | CA2125380A1 Drilling stabilizer |
| 12/14/1994 | EP0628759A1 Skid-ring and method for manufacturing the same |
| 11/29/1994 | CA2121220A1 Conduit liner |
| 11/23/1994 | EP0625663A1 Skidring for pipe passages |