| 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F16L 7 - Supporting pipes or cables inside other pipes or sleeves, e.g. for enabling pipes or cables to be inserted or withdrawn from under roads or railways without interruption of traffic (1,189) |
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| 07/25/1989 | US4850334 Inner ceramic tube in particular for a glove finger-shaped radiant tube for recirculation |
| 06/06/1989 | CA1255132A1 Method of mechanically blocking an internal element in a hollow external body |
| 03/30/1989 | DE3804497C1 Sleeve for sealing a protective cable conduit |
| 03/22/1989 | EP0307780A1 Sealing with variable diameters for the tightness between an external tube and internal tubes or shafts |
| 01/25/1989 | EP0300739A2 Improved inner pipe member for dual-wall drill pipe assembly |
| 01/24/1989 | US4799689 Wall feedthrough |
| 01/24/1989 | US4799653 Radial attenuation |
| 01/12/1989 | WO1989000264A1 System for plugging conduits |
| 12/21/1988 | EP0296031A1 Ceramic internal tube especially for radiant tube with internal exhaust gas recirculation |
| 12/13/1988 | US4790544 Expansible seal |
| 12/06/1988 | US4789164 Sealing device |
| 11/22/1988 | US4786088 Double-containment thermoplastic pipe assembly |
| 09/20/1988 | US4772050 Quick-disconnect inflatable seal assembly |
| 08/30/1988 | US4767177 Method for securing an element in a body, particularly an optical fiber |
| 08/10/1988 | EP0277898A1 Casing for the passage of pressurized fluids through masonry |
| 07/27/1988 | EP0276191A1 Passage of pressurized fluids through masonry |
| 07/13/1988 | EP0274235A2 Stabilizer for a drilling string |
| 06/21/1988 | US4751947 System for plugging conduits |
| 05/17/1988 | US4744695 Underground cable duct components and method of installing multiple cables therethrough |
| 04/21/1988 | DE3634366A1 Supporting wrapping for compaction |
| 03/08/1988 | CA1233764A1 Insulated article |
| 03/02/1988 | EP0257272A1 Radial shock absorber |
| 02/09/1988 | US4723580 Cable sheath assembly |
| 12/08/1987 | US4711475 High pressure fitting |
| 10/21/1987 | EP0242189A2 Wall feedthrough |
| 12/02/1986 | US4626001 Fluid fitting with high temperature capabilities |
| 10/14/1986 | US4616955 Method and apparatus for encasing pipeline or cable |
| 09/04/1986 | EP0179906A4 Fluid fitting with high temperature capabilities. |
| 08/26/1986 | US4607665 Conduit for conveying and isolating a fluid flow |
| 06/10/1986 | CN85106422A Method and apparatus for encasing pipeline or cable |
| 05/07/1986 | EP0179906A1 Fluid fitting with high temperature capabilities. |
| 04/30/1986 | EP0179657A2 Sealing device |
| 04/08/1986 | US4580788 Split ring sealing device for high pressure service |
| 11/07/1985 | WO1985004938A1 Fluid fitting with high temperature capabilities |
| 08/28/1985 | EP0152696A2 Expansible seal |
| 05/28/1985 | US4519634 Transition pipe fitting |
| 05/14/1985 | CA1187129A1 Roof drain insert coupling |
| 03/19/1985 | US4505499 Roof drain insert coupling |
| 03/19/1985 | US4505017 Method of installing a tube sleeve |
| 03/06/1985 | EP0133787A1 Radially expansible and contractible annular elements |
| 11/21/1984 | EP0125942A1 Method of mechanically locking an internal member into an outer body, and the use of this method in the manufacture of a part of a connector for optical fibres |
| 10/24/1984 | EP0122800A2 Pipe coupling device |
| 06/13/1984 | EP0109980A1 Spacing element for pipes |
| 04/03/1984 | US4440300 Molding device for nested pipes |
| 07/19/1983 | US4394531 Transmission line assembly including means for reducing vibrations and method of making same |
| 07/12/1983 | US4392526 Concentric tube heat exchanger with spacer |
| 06/14/1983 | CA1148131A1 Housing for a working space equipment and profile piece for said housing |
| 06/08/1983 | EP0020382B1 Combined dipstick breather tube |
| 03/22/1983 | US4377291 Sealing assembly |
| 03/02/1983 | EP0073083A1 Sealing ring |
| 12/15/1982 | EP0066834A1 Powder conveying pipe |
| 10/19/1982 | US4354657 Supports for coaxial conduits |
| 06/30/1982 | EP0054918A1 Device for introducing installation pipes or ducts in buildings provided with a cellar |
| 05/11/1982 | US4329504 Couplers for dyes, hair dyes |
| 01/26/1982 | CA1116964A1 Combined dipstick breather tube |
| 01/13/1982 | EP0043423A1 Supporting spacer for pipes inside other pipes, especially for holding tubes of tube mail systems within protection tubes |
| 01/05/1982 | CA1115727A1 Metaphenylenediamines and tinctorial compositions holding same |
| 07/28/1981 | US4280535 Inner tube assembly for dual conduit drill pipe |
| 04/01/1981 | EP0026010A1 Housing for a working space equipment and profile piece for said housing |
| 03/31/1981 | US4259261 Oxidation color dyes for hair |
| 03/10/1981 | US4255616 Cable support assembly for electrical penetration assembly for reactor containment |
| 02/17/1981 | US4250927 Duct spacer clip and duct assembly |
| 01/06/1981 | CA1092774A1 Sealing arrangement for chimneys with an annular pressurized space |
| 09/23/1980 | US4223702 Drain line for recreational vehicles |
| 07/29/1980 | CA1082620A1 Method and device for sealing the ends of underground cable pipes |
| 06/26/1980 | WO1980001319A1 Combined dipstick breather tube |
| 03/11/1980 | US4193105 Pipe with an external sealing body |
| 03/04/1980 | US4191099 Sealing arrangement for chimneys with an annular pressurized space |
| 01/08/1980 | US4182378 Spacing element for spacing an inner pipe from an outer pipe |
| 12/25/1979 | US4180101 Device for closing-off the space defined between an inner pipe and an outer shield tube |
| 08/21/1979 | US4165111 Collar for gas pipelines |
| 04/17/1979 | US4149739 Dual passage pipe for cycling water to an undersea mineral aggregate gathering apparatus |
| 11/28/1978 | CA1043326A1 Hose training means |
| 11/14/1978 | US4125367 Metaphenylenediamines and dyeing compositions containing the same |
| 11/07/1978 | US4124040 Insulated pipe anchor assembly |
| 04/25/1978 | US4085950 Gas riser apparatus and method |
| 01/10/1978 | US4068088 Underground mine equipment |
| 11/22/1977 | US4058987 Method and device for connecting sub-marine pipelines to a weight platform |
| 08/23/1977 | US4043139 Pipe holding tool |
| 08/16/1977 | US4042023 Control line protector |
| 08/02/1977 | US4039032 Hose training means |
| 07/19/1977 | US4036617 Transmission lines |
| 07/05/1977 | US4033381 Hot air duct |
| 06/14/1977 | US4029344 Connection joint for prefabricated metal chimney |
| 03/15/1977 | US4012061 Dual conduit drill stem member |
| 06/22/1976 | US3964754 Device for sealing the end of sheath pipe |
| 06/22/1976 | US3964707 Underground conduit holder |
| 03/16/1976 | US3943618 Method of assembly of a dual-walled pipe |
| 03/02/1976 | US3940832 Strapping for fastening production tubing to electrical cable |