| 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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| 10/19/1999 | US5968293 Induction heat treating and restraint quenching, cooling along a conveyor and straightening through a series of rollers which are vertically or horizontally adjustable perpendicular to the direction of conveyor travel |
| 10/06/1999 | EP0947256A2 Method and apparatus for straightening metal profiled elements and the like |
| 10/06/1999 | EP0946312A1 Method for automatic conducting of a straightening process |
| 10/06/1999 | CN1231023A Method for adjusting diaphragm spring |
| 09/16/1999 | WO1999046066A1 Process and device for straightening wire |
| 09/15/1999 | EP0745007B1 Method for manufacturing a cold rolled steel sheet with excellent enamel adherence |
| 09/07/1999 | US5946965 Vehicle wheel rim straightener and method of use thereof |
| 09/07/1999 | US5946800 Method for producing rocker arms |
| 09/01/1999 | CN2335719Y Metal capillary creep straightening device |
| 08/31/1999 | US5943903 Binding structure for multiple small and thin pipes |
| 08/17/1999 | CA2150727C Roll type processing facility and roll width adjusting device therefor |
| 08/11/1999 | CN2332502Y Metal pipe checking machine |
| 08/05/1999 | WO1999038637A1 Multiple bar straightening and cutting system in bar steel rolling line |
| 08/05/1999 | DE19804619C1 Machine for reforming underground plastics pipes |
| 08/04/1999 | EP0932462A1 Improved wire straightening device |
| 07/22/1999 | WO1999036201A1 Leaf spring straightening apparatus |
| 07/22/1999 | CA2315402A1 Leaf spring straightening apparatus |
| 07/14/1999 | CN2328448Y Clamp for drawing steel bar |
| 07/14/1999 | CN2328447Y Forming device for U shape bent |
| 07/14/1999 | CN2328446Y Locking device for inclined roll flattener |
| 07/14/1999 | CN2328445Y Spring guide and guard device for circular material flattener |
| 07/14/1999 | CN1222417A Hot pressing repair of corrugated roller |
| 06/22/1999 | US5913930 Cooling bed for rails |
| 06/17/1999 | DE19756293A1 Tube end calibrating device |
| 06/09/1999 | CN2322713Y Bar steel straightening device |
| 05/27/1999 | DE19737231A1 Shaft curvature correction |
| 05/20/1999 | DE19741109A1 Round stock post-machining by roller tools |
| 05/19/1999 | EP0916425A1 Apparatus for straightening a rolled section |
| 04/30/1999 | CA2215434A1 Two-in-one straightener and smoother |
| 04/08/1999 | DE19741934A1 Stauchvorrichtung und Stauchverfahren Clincher and compression method |
| 04/01/1999 | WO1999015929A1 Device and method for compressing |
| 03/31/1999 | EP0904859A1 Method for the development of beneficial residual stresses in rails or beams |
| 03/26/1999 | CA2248429A1 Sectional elements |
| 03/23/1999 | US5885522 Method and apparatus for heat treating and straightening structural members |
| 03/18/1999 | DE19739368A1 Machine for truing bevel gear shafts |
| 02/25/1999 | DE19736303A1 Straightening machine with anvils |
| 02/23/1999 | US5874813 Control method, especially for load balancing of a plurality of electromotor drives |
| 02/04/1999 | DE19828865A1 Diaphragm spring adjusting method |
| 02/03/1999 | CN2306087Y Formed steel straightener |
| 01/21/1999 | DE19725033C1 Bend correcting machine for camshafts |
| 01/13/1999 | CN2303693Y Straightening roller for round-bar staightening machine |
| 01/07/1999 | WO1999000606A1 Method for adjusting a diaphragm spring |
| 01/07/1999 | CA2263986A1 Method for adjusting a diaphragm spring |
| 12/10/1998 | DE19724300A1 Apparatus for pipe or bar straightening |
| 12/08/1998 | US5845526 Method for producing pipe having polygon-shaped closed cross-section and device therefor |
| 11/24/1998 | US5839315 For straightening a workpiece |
| 11/19/1998 | DE19719411A1 Straightening press |
| 11/12/1998 | DE19719565A1 Cross-roller straightening machine |
| 11/11/1998 | EP0876228A2 Process and device for producing pipes as per the uoe-process |
| 11/04/1998 | CN2296244Y Device for clearing foreign material from flattening ring of rail flattener |
| 10/27/1998 | US5826457 Wheel for mandrel of pipe straightening presses |
| 10/27/1998 | US5826455 Apparatus for reforming rollers for shaping rolled steel |
| 10/14/1998 | CN1195586A Automation system for measuring and straightening axle parts |
| 10/13/1998 | US5819575 Manufacturing apparatus of a corrugated fin and method of manufacturing the same |
| 10/07/1998 | CN2293398Y Roll-separating mechanism of straightening machine for metal round material |
| 09/24/1998 | DE19711952A1 Guide track for angled=roll straightening machine for tubes and rods |
| 09/24/1998 | DE19711951A1 Skew-roll straightening machine for elongate products |
| 09/24/1998 | DE19710060A1 Cylindrical workpiece straightening device |
| 09/24/1998 | DE19709733A1 Rotating straightening device for wire |
| 09/16/1998 | EP0864387A1 Twin-wire straightener for metallic materials in wire form and the like. |
| 09/03/1998 | WO1998037994A1 Apparatus for introducing tubes or rod-shaped bodies, with a rotational/translational movement, into machines for processing them |
| 09/03/1998 | WO1998037992A1 Method for forming sheet metal strip |
| 09/01/1998 | US5799529 Method for straightening and machining an anode lug |
| 08/27/1998 | DE19706622A1 Straightening machine, especially for steel beams made from sheet metal |
| 07/30/1998 | WO1998032552A1 A machine for straightening tubes and rod-shaped bodies in general |
| 07/02/1998 | WO1998028098A1 Method for automatic conducting of a straightening process |
| 07/02/1998 | DE19653569A1 Verfahren zur automatisierten Prozeßführung eines Richtprozesses Method for automated process control of a directional process |
| 07/02/1998 | CA2275334A1 Process for the automatic control of a straightening process |
| 07/01/1998 | EP0850705A1 Straightening machine |
| 06/23/1998 | US5768930 For the treatment of material |
| 06/23/1998 | CA2126432C Fence repairing tool for wire fences |
| 06/18/1998 | DE19651422A1 Straightening machine for wire and rod |
| 06/03/1998 | EP0844917A1 Portable rebar bending device and method |
| 04/29/1998 | CN2279966Y Automatic straightening device for continuously quenched and tempered long steel pieces |
| 04/14/1998 | US5738738 Hot rolling, coiling, cold rolling and annealing |
| 04/14/1998 | US5737957 Apparatus for straightening a cylindrical member |
| 04/08/1998 | EP0834355A1 Cooling bed for rails |
| 04/07/1998 | US5735157 Roll width adjusting device |
| 03/26/1998 | WO1998012005A1 Improved wire straightening device |
| 03/26/1998 | CA2216350A1 Cooling bed for rails |
| 03/24/1998 | US5730020 Apparatus and method for straightening arrowheads |
| 03/19/1998 | WO1998011261A1 Method and apparatus for heat treating and straightening structural members |
| 02/25/1998 | EP0825707A1 Regulator for distributing the load on a plurality of driving devices |
| 02/25/1998 | CN1174447A Regulating method |
| 01/21/1998 | CN1170644A Distortion removal method |
| 12/16/1997 | US5697206 Transmission type chain |
| 12/10/1997 | EP0641265B1 Straightening machine |
| 11/27/1997 | DE19620855A1 Device for straightening of plastically deformable metal parts, especially sheet strips |
| 11/19/1997 | CN1165489A Method of correcting U-shaped steel sheet pile |
| 10/23/1997 | WO1997027013A3 Process and device for producing pipes as per the uoe-process |
| 10/15/1997 | EP0800876A2 Straightening machine |
| 10/14/1997 | US5676010 Wire straightening device |
| 10/14/1997 | US5676009 Pipe straightener and rerounder device |
| 10/09/1997 | DE19613169A1 Straightening device for rotarily symmetrical parts |
| 10/08/1997 | EP0799656A2 Method for producing pipe having polygon-shaped closed cross-section and device therefor |
| 10/02/1997 | DE19611897A1 Bending, aligning and adjusting method for metal workpieces, especially hardened workpieces |
| 09/30/1997 | US5672218 Straightening bar between rollers, machining to remove hardened surface layer, rolling again at lower pressure |
| 09/24/1997 | CN2262963Y Reinforcing bar straightening machine |
| 09/17/1997 | EP0795364A1 Method of correcting u-shaped steel sheet pile |
| 09/16/1997 | US5666849 Method of correcting the dimension of workpieces |