| Patents for B21D 7 - Bending rods, profiles, or tubes (6,195) |
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| 07/03/1990 | US4938050 Small-diameter metallic conduit bending machine |
| 07/03/1990 | US4938048 Guide strip control device of pipe bending machine |
| 07/03/1990 | US4938047 Bending machine |
| 07/03/1990 | US4937937 Method for the manufacture of piston rings |
| 06/27/1990 | CN1043276A Process for producing high-frequency bent tubes having low hardness as worked |
| 06/20/1990 | EP0374110A2 Portable pipe bending machine with electromechanical control and electronic interlocking |
| 06/16/1990 | CA2005164A1 Portable pipe bending machine with electromechanical control and electronic interlocking |
| 06/14/1990 | WO1990006459A1 Piston rings |
| 05/30/1990 | EP0370485A2 Bending machine |
| 05/22/1990 | US4926676 Forming process for producing sharp corners in sheet metal |
| 05/22/1990 | US4926672 Pipe bender |
| 05/15/1990 | CA1268925A1 Method and apparatus for performing a substantially flat blank of an open clamp |
| 05/01/1990 | US4920780 Hydraulic ram rail bender |
| 04/25/1990 | EP0364836A2 Method of and device for bending bar-shaped work pieces |
| 04/25/1990 | CN1007707B Continuous space angle tube-bending mould |
| 04/24/1990 | US4918958 Device for bending conical wires |
| 04/11/1990 | EP0362698A2 Apparatus for the automatic bending of pipes and similar items |
| 03/28/1990 | CN2055071U Automatic bending and forming machine for spiral steel hoop |
| 03/27/1990 | US4910984 Progressive roll bender |
| 03/21/1990 | CN2054723U Whole elbow-shapping machine |
| 03/20/1990 | US4909059 Metal tubing bender |
| 02/13/1990 | US4899567 Method and apparatus for bending tubes with end fittings |
| 01/30/1990 | CA1265028A1 Bending machine |
| 01/24/1990 | EP0352236A2 Portable pipe-bending minimachine able to be manually - or motor-controlled and including an engaging/automatic disengaging device |
| 01/16/1990 | US4893489 Drive system for a bending machine |
| 01/10/1990 | EP0350457A2 A portable manually-controlled three-speed pipe-bending machine |
| 01/03/1990 | EP0348837A2 Method for the manufacture of piston rings |
| 01/02/1990 | US4890469 Bending machine for bending bars, channels, sections and the like |
| 12/26/1989 | US4888971 Pipe bending machine |
| 12/20/1989 | CN2049565U Small bending radius u form pipe bender |
| 12/19/1989 | US4887447 Rebar cutting and bending machine |
| 11/29/1989 | EP0343199A1 Automatic frame bending machine for bending of steel rod or strip, process and device for producing spring cores for mattresses and upholstered furniture |
| 11/29/1989 | CN1005901B 盘管弯曲机 Coil bender |
| 11/16/1989 | DE3815304A1 Method and apparatus for bending or straightening sections and strips by means of rolls or rollers |
| 10/31/1989 | US4876877 Portable tool for bending roof bolts for insertion in mine roof openings |
| 10/31/1989 | US4876872 Method and apparatus for manufacturing curved pipe |
| 10/25/1989 | EP0338944A1 Method and device for controlling the resilience by bending of an elongated element such as a tube. |
| 10/10/1989 | US4872331 Method and apparatus for roofing |
| 10/05/1989 | WO1989009104A1 Process and device for bending preferably rod-shaped material |
| 10/03/1989 | US4870849 Method for tube bending with controlled clamp die arrangement |
| 09/27/1989 | EP0334353A1 Method and machine for bending by preference bar material |
| 09/21/1989 | DE3836728A1 Vorrichtung zum definierten vorschub von profilen in profilbiegemaschinen Apparatus for defined feed of profiles in profile bending machine |
| 09/20/1989 | EP0332870A2 Apparatus for bending panels, in particular panels for coating hulls of aeroplanes, rockets or the like |
| 09/19/1989 | CA1259556A1 Press for cultivator shank |
| 09/13/1989 | EP0332049A2 Method of and device for bending hollow distance profiles |
| 09/12/1989 | CA1259172A1 Manufacture of piston rings |
| 08/30/1989 | CN1035066A Continuous space angle tube-bending mould |
| 08/24/1989 | WO1989007495A1 A method for bending spacer profiles for insulating glass, an apparatus for carrying out the method, and a spacer profile made by the method |
| 08/23/1989 | CN1034872A Bending apparatus for foming serpentine pipes |
| 08/02/1989 | CN1034324A Oscillating four-roller roll-bending principle and bending roll machine of sections |
| 07/26/1989 | CN1034151A Versatile tube bending and forming processes and apparatus for making bicycls handllbars |
| 07/25/1989 | US4850212 Bending apparatus |
| 07/18/1989 | US4848120 Pipe bending machine for producing a marking on a pipe |
| 07/12/1989 | CN2040815U Hand pipe bending roll device with connecting rod |
| 07/04/1989 | US4843861 Bending machines |
| 07/04/1989 | US4843859 Pipe bender |
| 07/04/1989 | US4843858 Tube bending apparatus |
| 06/21/1989 | CN2039604U Multifunction bending machine for metal material |
| 06/15/1989 | DE3811891A1 Apparatus for bending stock in strand form |
| 06/14/1989 | EP0320408A1 Control device for the reglet of a tube-bending machine |
| 06/07/1989 | EP0319400A1 Pipe conduit bending machine and method of making a pipe conduit with a soldered joint |
| 06/07/1989 | EP0318748A2 Apparatus for bending a hollow profile, in particular a frame of spacekeeping profiles for insulating glass panes |
| 05/30/1989 | US4833907 Consolidated backshoe die for a tube bender machine |
| 05/23/1989 | US4831856 Heat exchanger coil bending apparatus and method |
| 05/18/1989 | WO1989004222A1 A method and apparatus for bending corrugated sheet |
| 05/18/1989 | WO1989002323A3 Automatic frame bending machine for bending of steel rod or strip, process and device for producing spring cores for mattresses and upholstered furniture |
| 05/17/1989 | CN1032912A Movable multifunction hydraulic pipe bender |
| 05/16/1989 | US4829806 Variable tube offset bender |
| 05/10/1989 | EP0315281A2 A device for working on work-pieces by means of pressure |
| 05/09/1989 | US4827755 Manually operable swivel tube bender |
| 05/03/1989 | EP0314055A2 Curved pipe manufacturing method and an apparatus for carrying out same |
| 05/02/1989 | US4825678 Three-dimensional bending apparatus |
| 04/18/1989 | US4821549 Tube bending machine |
| 04/18/1989 | CA1252706A1 Bending apparatus |
| 04/04/1989 | CA1252030A1 Improved automated machine for bending thin and straight elements, e.g. metal wires, into spatial configurations |
| 03/23/1989 | WO1989002323A2 Automatic frame bending machine for bending of steel rod or strip, process and device for producing spring cores for mattresses and upholstered furniture |
| 03/22/1989 | EP0182890B1 Process to manufacture a seal-holding profile |
| 03/15/1989 | EP0307062A2 Automatic frame bending machine for bending steel rods or strips, and method and apparatus for making spring cores for mattresses or upholstered furniture |
| 03/14/1989 | US4811589 Fork member for pipe-bending apparatus to support spaced pipe abutment |
| 03/09/1989 | WO1989001833A1 Forming process for producing sharp corners in sheet metal and apparatus useful therein |
| 03/01/1989 | CN2033307U Tube-curving hand vice |
| 03/01/1989 | CN2033306U Multi-role tube-curving machine |
| 02/21/1989 | US4805492 Method for controlling a shape of a plate |
| 02/21/1989 | US4805436 Apparatus for bending metal tube of small diameter |
| 02/16/1989 | DE3726136A1 Manual tube-bending apparatus |
| 02/14/1989 | US4803878 Method and apparatus for forming elongate tubular members into a predetermined shape while extrusion is gas pressurized and product |
| 02/01/1989 | EP0301750A2 Method and apparatus for bending tubing |
| 01/24/1989 | US4799373 For bending wire, tubing, or other elongate material |
| 01/24/1989 | CA1249121A1 Method for manufacturing bent steel pipe excellent in strength and low-temperature toughness |
| 01/18/1989 | EP0299857A2 Machine for bending wires |
| 01/18/1989 | EP0299792A2 Tube bending apparatus and method |
| 01/17/1989 | US4798078 Rebar cutting and bending machine |
| 01/17/1989 | US4798073 Bending machine for bending bars, channels, sections and the like |
| 01/03/1989 | US4794779 Bending machine |
| 12/28/1988 | EP0296317A2 Method and device for bending a sheet metal |
| 12/20/1988 | CA1246978A1 Method of and apparatus for making spacers for use in multiple-pane windows of the like |
| 12/14/1988 | CN88211031U Device for small curvature winding pipe forming |
| 12/13/1988 | US4790168 Pipe crimping and cutting |
| 12/08/1988 | DE3816940A1 Verfahren und vorrichtung zum biegen von rohren Method and device for bending of tubes |
| 12/06/1988 | US4788847 Rod bending apparatus |