| Patents for F16L 43 - Bends; Siphons (2,212) |
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| 05/12/1993 | CN2132908Y Elbow pipe joint |
| 04/14/1993 | CN2129859Y Out screw three-way elow connection |
| 04/07/1993 | EP0535524A1 Adjusting piece for mounting in pipelines |
| 04/06/1993 | CA1315825C Pipe connecting element |
| 03/30/1993 | US5197509 Method of reducing fluid turbulence |
| 03/24/1993 | EP0532697A1 Laminar flow elbow system |
| 03/03/1993 | CN2127761Y Multi-purpose waer-resisting bend |
| 12/09/1992 | EP0516947A1 Elbow for gutter drain pipe |
| 11/26/1992 | WO1992020475A1 Precision forming apparatus, method and article |
| 10/27/1992 | US5158328 Universal duct elbow and connector plate |
| 09/23/1992 | CN1018382B Bent pipe |
| 09/08/1992 | US5145217 Universal dryer duct and vent |
| 07/01/1992 | EP0493302A1 Mechanism to reduce pressure losses in angled conduits |
| 06/25/1992 | DE4040645A1 Pipe band with two end flanges - has special dimensions ensuring short curve with good flow path |
| 03/25/1992 | EP0477128A2 Flexible drainage trap |
| 03/18/1992 | CA2051258A1 Flexible drainage trap |
| 02/19/1992 | CN2096684U Elbow |
| 01/30/1992 | DE4034736C1 Junction pipe in mine shaft - incorporates cross-block with square outlet |
| 01/22/1992 | CN1015326B Pipe joint element |
| 12/07/1991 | WO1991019180A1 Laminar flow elbow system |
| 12/07/1991 | CA2084682A1 Laminar flow elbow system |
| 12/05/1991 | DE4017278A1 Pipe bend section for connection to straight end pipes - has two shells with chamfered outer edges, inner shell welded first and second welded on top |
| 11/12/1991 | US5063616 Flexible drainage trap |
| 10/29/1991 | US5060984 Short radius, low wear elbow |
| 10/08/1991 | US5054819 Plumbing elbows or bends |
| 10/08/1991 | CA1290361C Pipe connecting member |
| 08/13/1991 | US5039136 Stabilizing fitting for gases and fluids |
| 06/12/1991 | CN2078815U Liquid-pumping pipe without pumping out precipitated liquid stain |
| 05/21/1991 | US5016923 Erosion resistant elbow conduit |
| 05/14/1991 | US5014424 Method of making a curved pipe |
| 04/30/1991 | US5011192 Bolt retaining hydraulic end fitting assembly |
| 04/17/1991 | CN2075293U Beng avoiding connector |
| 03/06/1991 | CN2072631U Storage self-grinding elbow |
| 02/26/1991 | US4995645 Elbow connection for pneumatic conveying system |
| 02/26/1991 | US4995426 Stock material for forming air turning vanes and air guide devices |
| 01/23/1991 | CN1011332B Hood for pipe bending |
| 12/19/1990 | CN1047914A Bent pipe |
| 12/05/1990 | EP0400576A1 Bent pipe |
| 10/24/1990 | CN2064453U Lengthened bends for straight pipes |
| 10/17/1990 | EP0322508B1 Pipe joint element |
| 10/11/1990 | DE3911057A1 Curved, tubular part of a conveying system |
| 05/01/1990 | US4921120 Debris cap |
| 04/11/1990 | CN2055893U Machine-made single-piece mitre elbow |
| 04/10/1990 | US4915425 Pipe connecting element |
| 01/24/1990 | EP0351487A1 Curved pipe fitting |
| 11/07/1989 | US4878694 Method and device for the remote positioning of an elbow coupling |
| 10/25/1989 | EP0338503A1 Elbow for gutter drain pipe |
| 09/12/1989 | US4865353 Abrasion resistant ceramic elbow |
| 08/31/1989 | DE3800731C1 Angle-adjustable pipe bends comprising at least two pieces |
| 07/26/1989 | CN1034255A Pipe joint element |
| 07/05/1989 | EP0322508A1 Pipe joint element |
| 06/14/1989 | EP0319650A1 Burner pipe |
| 06/13/1989 | US4838318 Elbow cover for an elbow in pipework |
| 05/16/1989 | US4830410 Pipe connecting member of plastics material |
| 12/28/1988 | EP0296251A1 Bent pipe having high-strength cross-section |
| 10/05/1988 | EP0285279A2 Elbow connector |
| 08/03/1988 | CN88100321A Hood for pipe bending |
| 07/28/1988 | DE3801377A1 Covering for a pipe bend |
| 07/14/1988 | WO1988005143A1 Bent pipe having high-strength cross-section |
| 06/08/1988 | EP0269792A1 Plastic pipe fitting |
| 05/11/1988 | CN87107181A Pipe connecting member of plastics material |
| 02/02/1988 | US4722213 Method of cold drawing a metal tube |
| 01/07/1988 | EP0251882A1 Device and method for positioning and connecting by remote control a curved connector |
| 11/03/1987 | US4703771 Vehicle fuel tank |
| 05/26/1987 | US4667505 Split fittings and pipeline systems using same |
| 04/07/1987 | CA1220146A1 Pipe fitting flange connector |
| 03/31/1987 | US4653777 Articulate bent pipe for transportation of powder and slurry in dry or wet state |
| 12/09/1986 | US4627646 Pipe fitting |
| 09/24/1986 | EP0195528A1 Pipe elbow |
| 09/03/1986 | EP0193034A1 An articulate bent pipe for transportation of powder and slurry in dry or wet state |
| 09/03/1986 | EP0080508B1 Short radius, low wear elbow |
| 04/22/1986 | CA1203389A1 Method for installing elbows for sewers |
| 11/26/1985 | US4554816 Method for the manufacture of a pipe bend |
| 07/17/1985 | EP0148514A2 Method and apparatus for cold drawing and imparting curvature to metal tubes |
| 11/27/1984 | US4484724 Forming element and forming apparatus for casting manhole inverts |
| 09/26/1984 | EP0119782A1 Variable angle pipe joint |
| 07/24/1984 | US4461323 Bent honeycomb pipe assembly with central pipe |
| 06/27/1984 | EP0112236A1 Connecting line between two fixed implements |
| 06/27/1984 | EP0111589A1 Elbow element |
| 03/27/1984 | CA1164369A1 Short radius, low wear elbow |
| 11/23/1983 | EP0094549A2 Pipe fitting |
| 10/04/1983 | EP0080508A4 Short radius, low wear elbow. |
| 06/14/1983 | US4387914 Short radius, low wear elbow |
| 06/08/1983 | EP0080508A1 Short radius, low wear elbow. |
| 12/09/1982 | WO1982004302A1 Short radius, low wear elbow |
| 10/19/1982 | CA1133963A1 Fitting |
| 10/12/1982 | CA1133404A1 Pipe elbow |
| 09/30/1982 | WO1982003191A1 Method and apparatus for production of tubes,and resulting product |
| 09/22/1982 | EP0060820A1 Method and apparatus for production of tubes |
| 04/13/1982 | US4324423 Tubular fitment |
| 03/31/1982 | EP0048307A1 Method and device for laying piping and piping laid by said method |
| 02/16/1982 | US4315644 Multishell pipe bend |
| 11/25/1981 | EP0009496B1 Multiple wall angle connection |
| 11/10/1981 | CA1112128A1 Fluid pipeline extended vane elbow |
| 09/08/1981 | US4288103 Fluid fitting having gripping bass means for chucking |
| 07/28/1981 | US4280721 Angularly lockable fitting |
| 05/05/1981 | US4265472 Pipe elbow connection |
| 11/11/1980 | US4232710 Liquid pipeline extended vane elbow |
| 04/16/1980 | EP0009496A1 Multiple wall angle connection. |
| 03/04/1980 | CA1072855A1 Trap incorporating access fitting |