| Patents for B21D 3 - Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts (4,094) |
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| 12/29/1987 | US4715204 Method and apparatus for accurately centered alignment of a hollow rotation symmetrical workpiece |
| 12/08/1987 | US4711112 Straightening machines and methods |
| 11/25/1987 | CN86108838A Flattening rectifier for weld bead between a thin-wall barrel and a flange |
| 11/24/1987 | US4708749 Method of calibrating vehicle wheels to a finished size |
| 11/24/1987 | US4708279 Internal alignment clamp |
| 11/19/1987 | DE3616699A1 Roller straightening machine for straightening rolled sections |
| 11/12/1987 | DE3710399A1 Straightening rotationally symmetrical workpieces - by successively applying reducing forces to workpiece between two counter-bearings according to a specific formula |
| 10/20/1987 | US4700439 Driveshaft fabricating apparatus |
| 09/09/1987 | EP0235323A1 Apparatus and method for straightening a hollow cylindrical work piece |
| 09/02/1987 | EP0234204A2 Method and apparatus for straightening a rail in a roller straightening machine |
| 08/25/1987 | US4688412 Shaft straightening machine |
| 08/05/1987 | CN86100832A Mechanism for realizing the theoretical curved surface roller shape |
| 07/01/1987 | EP0136287B1 Axial guiding device for bars, pipes and wires |
| 05/26/1987 | US4667501 Apparatus for straightening electrode rods |
| 05/12/1987 | US4663955 Apparatus for straightening tubing |
| 04/07/1987 | US4655066 Device for straightening cold-deformable, rotationally-symmetrical workpieces |
| 03/26/1987 | DE3533111A1 Press control |
| 03/18/1987 | EP0214940A2 A straightener machine for bars and the like |
| 02/03/1987 | US4640115 Straightening device |
| 01/15/1987 | DE3523605A1 Polishing and straightening machine |
| 01/08/1987 | DE3522976A1 Method and apparatus for straightening rolling stock |
| 12/30/1986 | EP0206835A2 Apparatus and method for reforming and rolling deformed ends of tubes |
| 11/25/1986 | US4624123 Straightening machine for motor armature assemblies and the like |
| 11/20/1986 | EP0201660A2 Roller straigthening machine for elongated work pieces |
| 11/18/1986 | US4622836 Loft and lie calibration machine |
| 11/04/1986 | US4620431 Golf club straightening device |
| 10/22/1986 | EP0197924A1 Straightening machines and methods |
| 10/15/1986 | EP0197410A2 Device for heating elongated metallic work pieces by induction |
| 10/07/1986 | US4615198 Apparatus and method for reforming and rolling tube ends |
| 09/17/1986 | EP0194478A2 Device for straightening rods or wire without relative rotation of succeeding elements of material about the longitudinal axis |
| 08/12/1986 | US4604928 Section conveying and cooling apparatus |
| 07/03/1986 | WO1986003699A1 Closed guiding channel for round bars |
| 07/01/1986 | US4597283 Method for straightening a rail and straightened rail |
| 06/17/1986 | US4594871 Reel type continuous marine pipe laying system |
| 06/04/1986 | EP0183243A1 Process for sizing wheel rims |
| 05/28/1986 | EP0182003A2 Cross-roll straightening machine with more than two straightening rolls |
| 04/24/1986 | WO1986002294A1 Straightening machines and methods |
| 02/25/1986 | US4571981 Spike straightening apparatus |
| 02/25/1986 | US4571821 Sleeve insertion |
| 01/21/1986 | US4565083 Straightening rolls |
| 01/08/1986 | EP0167036A2 Reel type continuous marine pipe laying system |
| 12/03/1985 | US4555926 Equipment for the repair of, in particular for correcting dents or bulges in, containers |
| 11/07/1985 | EP0095462A4 Wire straightener and method for straightening wire. |
| 11/06/1985 | EP0160004A1 Roll straightening plant |
| 09/03/1985 | US4538438 Water conserving elongate tubular metal member straightening apparatus |
| 08/27/1985 | US4537098 Tool for straightening jewelry chain |
| 08/13/1985 | US4534197 Method and apparatus for straightening pipe |
| 07/30/1985 | US4531391 Adaptive method and apparatus for correcting deviations in the shape of objects |
| 04/25/1985 | WO1985001679A1 Roll straightening plant |
| 04/17/1985 | EP0137140A1 Method for sleeving a tube |
| 04/10/1985 | EP0136287A1 Axial guiding device for bars, pipes and wires. |
| 02/20/1985 | EP0133254A2 Method and apparatus for calibrating, deforming and compressing the surfaces of tubes |
| 02/19/1985 | CA1182618A1 Steam preheating the endless flexible casting belt in a continuous casting machine |
| 01/22/1985 | US4494394 Straightening machines and methods |
| 01/15/1985 | US4493204 Shaft straightening press with a traveling ram |
| 01/02/1985 | CA1180172A Method of preforming a booster casing element with its reinforcement |
| 12/25/1984 | US4489582 Method for straightening drawn round stock and apparatus for the practice of the method |
| 11/20/1984 | US4483175 Thin wall tube straightening apparatus |
| 11/20/1984 | CA1178129A1 Die construction for fan blades |
| 10/30/1984 | CA1176838A1 Size press with coating pool suppressing arrangement |
| 10/24/1984 | EP0043841B1 Device for straightening of pipes |
| 10/09/1984 | US4475371 Testing and straightening machine |
| 09/18/1984 | US4471645 Shank shaper |
| 09/18/1984 | US4471639 Roll orientation control system for straightening machines |
| 09/11/1984 | CA1174154A1 Shank shaper |
| 08/16/1984 | WO1984003060A1 Axial guiding device for bars, pipes and wires |
| 08/14/1984 | US4464919 Wire straightener and method for straightening wire |
| 08/01/1984 | EP0114628A2 Repair device for straightening steel containers |
| 02/14/1984 | US4430880 Device for straightening suspension bars removed from the cathode plates in electrolytic refining plants |
| 02/01/1984 | EP0099413A1 Method of straightening elongated round material and apparatus therefor |
| 01/17/1984 | US4425776 Production workpiece straightening system |
| 01/17/1984 | CA1160550A1 Straightening apparatus for steel pipes and the like |
| 12/07/1983 | EP0095462A1 Wire straightener and method for straightening wire |
| 11/22/1983 | US4416130 Pulsing impact straightener |
| 11/08/1983 | US4413807 Rail gauging shoe |
| 09/27/1983 | US4406141 Straightening apparatus for steel pipes and the like |
| 09/20/1983 | US4404833 Device for straightening of pipes |
| 09/06/1983 | CA1153289A1 Workpiece guides for straightening apparatus |
| 08/17/1983 | EP0085806A1 Apparatus for cold working of metal rod |
| 07/05/1983 | US4391217 Size press with coating pool suppressing arrangement |
| 06/28/1983 | US4389867 Tool for restoring roundness to metal tubing |
| 06/23/1983 | WO1983002076A1 Wire straightener and method for straightening wire |
| 06/08/1983 | EP0080832A1 Apparatus for cold working of metal rod |
| 05/17/1983 | US4383426 Die construction for fan blades |
| 05/10/1983 | CA1146055A1 Method and device for straightening supporting bars removed from the cathode plates in electrolytic refining plants |
| 03/08/1983 | CA1142420A1 Apparatus for rolling curved sections |
| 11/30/1982 | US4361022 Workpiece guides for straightening apparatus |
| 11/16/1982 | US4358945 Gag press |
| 11/02/1982 | US4356715 Method and device for straightening elongated drawn round stock |
| 08/31/1982 | CA1130704A1 Thermal homogenization of steam generating tubing |
| 06/30/1982 | EP0054605A2 Straightening machine with six or more angularly arranged straightening rolls |
| 06/15/1982 | US4334420 Tube guide |
| 06/15/1982 | US4334418 Portable strip steel camber straightening machine |
| 05/19/1982 | EP0051950A2 Mobile machine for straightening tubes |
| 03/30/1982 | US4321815 Apparatus for interchangeable mounting of rollers, particularly in a straightening machine |
| 01/20/1982 | EP0043841A1 Device for straightening of pipes. |
| 12/29/1981 | US4307596 Roller block, in particular for a roller straightening machine |
| 12/22/1981 | US4306435 Machine for automatically straightening-out elongate workpieces |
| 10/01/1981 | WO1981002696A1 Machine for truing round bars |
| 09/30/1981 | EP0036670A1 Installation for regenerating open steel profiles |