| 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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| 07/12/1994 | US5327757 Straightening jaws for a straightening device for straightening wire |
| 06/29/1994 | CN1088492A Steel pipe roundness checking method and device |
| 06/09/1994 | WO1994012293A1 Process and linear shaping machine for truing rod-like material |
| 05/17/1994 | CA1329498C Controlled shot peening |
| 05/10/1994 | US5309746 Automatic tube straightening system |
| 04/21/1994 | DE3250083C2 Method of straightening railway rails |
| 04/13/1994 | CN1085139A High precision pipe straightener |
| 04/07/1994 | DE4232407A1 Appts. for straightening hot rolled profiles - using a fixed roller and an hydraulically adjustable roller |
| 03/17/1994 | WO1994005441A1 A straightening method |
| 03/17/1994 | WO1994005439A1 Adjustable re-usable ceramic inserts |
| 02/24/1994 | DE4311300C1 Straightening appts. for wire, multi-wire and tube products - with roll bearing cassettes in the form of hollow cylinders located in toleranced bores |
| 02/24/1994 | DE4311299C1 Straightening appts. for wire, multi-wire and tube products - maintained in an open state by spring elements between the body components carrying straightening rolls |
| 12/12/1993 | CA2097394A1 Method and apparatus for straightening coupling shafts |
| 11/25/1993 | WO1993023184A1 Bending and straightening machine |
| 10/27/1993 | EP0567278A1 Mandrel loading method and apparatus in a thermal sizing-annealing process |
| 10/27/1993 | CN1077668A Stretching technique for straightening surface |
| 10/19/1993 | US5253499 Method for straightening coupling shafts |
| 09/15/1993 | EP0560091A1 Method and device for straightening H-section beams |
| 09/15/1993 | CN1076146A Method of and apparatus for straightening i-steel |
| 09/08/1993 | CN2141743Y Hydraulic double-cylinder reshaper |
| 09/08/1993 | CA2091108A1 Method and apparatus for straightening h-shaped girder sections |
| 08/18/1993 | EP0555528A1 A pipe straightening machine |
| 08/17/1993 | US5235838 Method and apparatus for truing or straightening out of true work pieces |
| 08/11/1993 | CN1075106A Roller type straightening machine |
| 08/10/1993 | US5233853 Stretch straightening hairpin bender |
| 08/03/1993 | US5231863 Mandrel loading method and apparatus in a thermal sizing-annealing process |
| 07/28/1993 | CN2139036Y Steel pipe straightener unit |
| 07/22/1993 | WO1993013892A1 Wire straightening method |
| 07/22/1993 | DE4244525A1 Roll straightener, esp. for deep web beams |
| 07/22/1993 | DE4201225A1 Device for alignment of heavy profiles - works between vertically movable tools above or below the line of alignment with profile aligned in stages with alternating advance feed movements and press stages. |
| 07/21/1993 | EP0551656A1 Roller straightening machine |
| 07/18/1993 | CA2087370A1 Roller leveller |
| 07/06/1993 | CA1319859C Sizing tool for a machine for the longitudinal seam welding of rounded can bodies |
| 06/30/1993 | EP0549520A1 Straightener die for a wire straightening machine |
| 06/30/1993 | EP0548322A1 Method for finish bending of three-dimensionally bent workpieces, and finish bending station |
| 06/24/1993 | DE4142499A1 Device for straightening rotary-symmetrical workpiece - has straightening press with computer-controlled clamp elements and workpiece handling/processing devices |
| 06/09/1993 | EP0545825A1 Straightening machine for girders |
| 06/09/1993 | EP0473739B1 Device for straightening a wire |
| 05/19/1993 | DE4137459A1 Truing hot rolled metal sections - uses rollers with flexible outer rings which increase contact with worked section |
| 04/28/1993 | EP0538763A1 Device for correcting the straightening of iron rods and the like |
| 04/28/1993 | CN2130612Y Inlay cast liner composite straightening roller |
| 04/28/1993 | CN2130611Y Guide and guard beam for large and medium open-train mill |
| 03/17/1993 | CN2128175Y Working tool for restoring form of steel tube |
| 03/16/1993 | CA1314470C Method and apparatus for straightening cast anodes |
| 03/09/1993 | US5191780 Roller-type straightening apparatus for h-beams |
| 02/24/1993 | EP0528154A1 Method to obtain in the cold state single finished sections from cold single multi-section elements, and relative machine |
| 02/02/1993 | CA1313315C Process for producing a rolled section having a corrugated part and installation intended for this purpose |
| 02/01/1993 | CA2074894A1 Method to obtain in the cold state single finished sections from cold single multi-section elements, and relative machine |
| 01/21/1993 | WO1993001011A1 Method for finish bending of three-dimensionally bent workpieces, and finish bending station |
| 01/21/1993 | DE4123035A1 Verfahren zum richten von dreidimensional gebogenen werkstuecken und hierzu gehoerende richtstation A method for three-dimensional set of curved workpieces and this BELONGING reporting station |
| 01/19/1993 | CA1312748C Lug straightener |
| 12/15/1992 | CA1311542C Method of operating a machine for the stress relief of workpieces by vibration |
| 11/10/1992 | US5161399 Device for straightening a wire |
| 11/04/1992 | CN2120644U Rotary straight cutting maching |
| 10/28/1992 | CN2120113U Three-roll quench cooling and straightening device |
| 10/07/1992 | CN2117956U Steel tube straightening machine for falsework |
| 09/23/1992 | EP0504495A1 Roller-type straightening apparatus for H-beams |
| 08/26/1992 | CN2113842U Seven-rooler rod straightening machine |
| 08/26/1992 | CN1017975B Mechanism for realizing theoretical curved surface roller shape |
| 08/18/1992 | US5138860 Combined assembly to straighten and linearize bars or rods |
| 08/05/1992 | EP0497199A1 Method and relative apparatus for the re-use of wash water in the photographic field |
| 06/24/1992 | CN2107959U Middle or small cold bend bar section shaper |
| 06/02/1992 | US5117672 Machines for straightening elongate components such as anode rods |
| 06/02/1992 | CA1302070C Pulling machine for straigtening and detensioning steel rails |
| 05/26/1992 | US5115657 Combined assembly to straighten and linearize sections |
| 05/26/1992 | US5115653 Method of straightening rolled material |
| 05/20/1992 | CN1016706B Method of operating machine for relaxing of workpieces stress by vibration |
| 05/12/1992 | US5111677 Orthogonal adjustment unit for straightening bars |
| 05/05/1992 | US5109687 Device for adjustment of barrel width of roll type straightener |
| 04/22/1992 | CN2102169U Hanging type straightener for steel beam, column and wing plate |
| 04/14/1992 | US5103666 Apparatus and method of straightening the ends of elongated workpieces |
| 03/11/1992 | EP0474457A1 Channel forming apparatus |
| 03/11/1992 | EP0473739A1 Device for straightening a wire. |
| 03/04/1992 | EP0472765A1 Section steel straightener with adjustable roller width |
| 03/04/1992 | CN1015695B Sizing tool for machine for longitudinal seam welding of rounded can bodies |
| 02/12/1992 | EP0470077A1 Smart straightening press |
| 02/05/1992 | EP0469410A1 Method and device for strengthening of reinforcing bars for concrete |
| 02/04/1992 | CA1295152C Gutter swedge |
| 01/23/1992 | DE4022951A1 Machine for straightening rolled metal sections - has ram which can be moved along overhead beam |
| 01/09/1992 | DE4019974A1 Applying tensile force to aluminium extrusion - by holding ends of extrusion in grippers whilst it cools |
| 12/24/1991 | US5074923 Heating on mandrel to enlarge internal diameter accurately |
| 12/11/1991 | EP0460527A1 Bore processing device |
| 12/04/1991 | EP0459869A1 Procedure and device for the automatic control of straightening rollers |
| 12/04/1991 | CN1014961B Composite rotary hub type straightener |
| 11/26/1991 | US5067337 Device for the controlled and independent rocking of straightening and bending platforms |
| 11/14/1991 | WO1991017003A1 Roller straightener particularly for reinforcing |
| 11/13/1991 | CN2088463U Hydraulic multi-purpose correcting machine |
| 10/30/1991 | CN2087539U Movable hydraulic bed |
| 10/29/1991 | US5060498 Section steel straightener with adjustable roller width |
| 10/22/1991 | US5058411 Method for shaping filament reinforced annular objects |
| 10/16/1991 | CN1014303B Straightening method straightener for sewing-machine needles |
| 10/03/1991 | WO1991014522A1 Device for straightening a wire |
| 09/27/1991 | CA2034429A1 Method for id sizing of filament reinforced annular objects |
| 09/18/1991 | EP0446648A1 Combined assembly to straighten and linearize bars or rods |
| 09/16/1991 | CA2038310A1 Combined assembly to straighten and linearize bars or rods |
| 09/16/1991 | CA2034346A1 Method for shaping filament reinforced annular objects |
| 09/12/1991 | DE4007489A1 Test equipment for workpieces - has throughflow feed with successive tests and with programmed sorting |
| 09/03/1991 | US5044192 Lug straightener |
| 09/03/1991 | US5044187 Metal tubing roller or crowner |
| 09/03/1991 | US5044186 System and method of detecting roll position in a rotary straightener |