| Patents for B21D 11 - Bending not restricted to forms of material mentioned in only one of groups , ,; Bending not provided for in groups; Twisting (4,159) |
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| 06/13/1990 | EP0372474A2 A method of straightening a knife for a beet slincer as well as an apparatus for carrying out the method |
| 06/06/1990 | EP0371960A2 Method for bending bar-shaped materials |
| 06/05/1990 | US4930329 Installation for producing metal girders |
| 05/23/1990 | DE3838841A1 Bending machine for steel reinforcing mats |
| 05/23/1990 | CA2002431A1 Plant or apparatus utilizing a universal straightening-bending machine |
| 04/24/1990 | US4918971 Bending tool |
| 04/24/1990 | US4918958 Device for bending conical wires |
| 04/12/1990 | DE3834104A1 Iron turner for turning iron bars |
| 03/29/1990 | DE3831363A1 Verfahren zum biegen von sandwichplatten Method for bending of sandwich panels |
| 03/08/1990 | WO1990002275A1 Springs and reels |
| 02/07/1990 | EP0353622A1 Apparatus for forming perforated tubes |
| 02/06/1990 | US4898016 In-roof flanging fixture and process |
| 02/06/1990 | CA1265321A1 Gaskets |
| 01/16/1990 | US4893391 Method and apparatus for producing round-rolled parts for heat exchangers |
| 01/10/1990 | EP0349953A2 Apparatus for working rod material |
| 01/02/1990 | US4890469 Bending machine for bending bars, channels, sections and the like |
| 12/26/1989 | US4889467 Tooling assembly for rod material |
| 11/07/1989 | US4878369 Apparatus for forming elongate structural components |
| 10/31/1989 | US4876877 Portable tool for bending roof bolts for insertion in mine roof openings |
| 10/26/1989 | DE3812774A1 Method and apparatus for the production of a tap column for bars |
| 10/05/1989 | WO1989009104A1 Process and device for bending preferably rod-shaped material |
| 09/28/1989 | DE3824593C1 Apparatus for correcting the sabre which occurs during the punching of strips and taped components |
| 09/27/1989 | EP0334353A1 Method and machine for bending by preference bar material |
| 09/20/1989 | EP0333695A2 Apparatus for removing wire straps from a strap-bending machine |
| 09/20/1989 | EP0332870A2 Apparatus for bending panels, in particular panels for coating hulls of aeroplanes, rockets or the like |
| 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 |
| 08/16/1989 | EP0328476A2 Method for fabricating integrally bladed rotors |
| 08/08/1989 | US4854150 Method of bending and forming heated tubular workpieces |
| 06/27/1989 | US4841614 Method for fabricating integrally bladed rotors |
| 06/07/1989 | CN2038818U Pipe roasting machine fixed on a steel hooking machine |
| 06/06/1989 | US4835805 Production of threaded metal rods for making U-bolts |
| 05/31/1989 | EP0317830A2 A method of bending metal objects |
| 05/23/1989 | US4831856 Heat exchanger coil bending apparatus and method |
| 05/23/1989 | CA1254487A1 Disc roller mechanism and method for forming helical shapes |
| 05/18/1989 | WO1989004222A1 A method and apparatus for bending corrugated sheet |
| 05/17/1989 | CN1032913A Apparatus for longitudinal rolling of varying-section blanks |
| 05/16/1989 | US4829806 Variable tube offset bender |
| 05/16/1989 | US4829803 Method of forming box-like frame members |
| 05/09/1989 | US4827753 Extrusion former with three-way powered movement |
| 04/12/1989 | CN2035664U Surface strengthening machine for leaf spring |
| 03/29/1989 | EP0308627A2 Method of making a metal plate product |
| 03/28/1989 | US4815308 Method and apparatus for forming an elongate member into a predetermined shape |
| 03/22/1989 | CN2034483U Moving multifunctional hydraulic pipe bender |
| 03/09/1989 | DE3728403A1 Method and apparatus for the automatic bending of straight tubes |
| 03/01/1989 | EP0305061A2 Method of forming reinforced box-section frame members |
| 02/22/1989 | CN2032917U Tower spiral coil pipe unit |
| 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 | CN1030711A Method of forming box-like frame members |
| 01/18/1989 | EP0299857A2 Machine for bending wires |
| 01/17/1989 | US4798073 Bending machine for bending bars, channels, sections and the like |
| 01/04/1989 | CN2030115U Cold-drawn rolling die for making screwed steel |
| 12/29/1988 | DE3717770A1 Means for producing the sheet-metal parts of a chinmey tray |
| 12/22/1988 | DE3735015A1 Straightening press |
| 12/21/1988 | EP0295537A2 Method of adjusting anchors for stone façade-plates and anchor therefor |
| 12/13/1988 | CA1246330A1 Blade twisting apparatus |
| 12/07/1988 | EP0294034A2 Method of forming box-like frame members |
| 11/24/1988 | DE3816005A1 Machine for bending round bars and similar metal elements |
| 11/15/1988 | US4783981 Apparatus for forming a tube from a metal band |
| 11/08/1988 | US4782858 Valve cover for a compressor |
| 11/01/1988 | US4781054 Apparatus for bending and forming heated tubular workpieces |
| 11/01/1988 | US4781048 Method of forming spirally wound gaskets |
| 09/28/1988 | CN88101510A Moving mould of tunnel liner device |
| 09/27/1988 | US4773284 For bending material in strip manufacture of press knives |
| 09/13/1988 | US4770017 Apparatus for forming plate with a double-curved surface |
| 08/30/1988 | US4766756 Continuous processing machine assembly for bending long rods or tubes |
| 08/30/1988 | US4766754 Continuous process for bending long rods or tubes |
| 08/30/1988 | US4766751 Apparatus for continuously producing tube having helical grooves in its inner surface |
| 08/16/1988 | CA1240586A1 Roller mechanism and method for forming helical shapes |
| 08/10/1988 | EP0277690A2 Method of making tungsten steel articles by mechanically bending a sheet of tungsten steel |
| 07/26/1988 | US4759111 Method of forming reinforced box-selection frame members |
| 07/20/1988 | EP0274719A2 Thread-forming method and tubular body provided with a thread |
| 07/19/1988 | US4757702 Bending and twisting apparatus and method for printing machine threading tube |
| 07/05/1988 | US4754632 Apparatus for bending structural metal rails |
| 06/28/1988 | US4753098 Method and apparatus for forming a tube |
| 06/21/1988 | CA1238262A1 Machine for three dimension shaping and/or straightening of steel plates with flame heating followed by water and/or air cooling |
| 06/07/1988 | US4748707 Production of threaded metal rods for making U-bolts |
| 06/01/1988 | EP0268676A1 Process and device for cold forming of steel and non-ferrous metal sections. |
| 05/31/1988 | US4747292 Stretch forming apparatus |
| 05/17/1988 | US4744237 Method of forming box-like frame members |
| 04/05/1988 | US4735071 Apparatus for continuously producing tube having helical grooves in its inner surface |
| 04/05/1988 | CA1234686A1 Twisting apparatus and method |
| 04/05/1988 | CA1234683A1 Method and apparatus for manufacturing a screw flight |
| 03/16/1988 | EP0260122A2 Forming elongate structural components |
| 03/09/1988 | CN87211249U Joggling equipment for thin-strip material |
| 03/02/1988 | EP0258109A1 Method and apparatus for bending metallic wires |
| 03/02/1988 | EP0257224A2 Method and machine for bending steel mesh into basket shapes with stirrups |
| 03/02/1988 | CN87207544U Shaping die with winch |
| 02/24/1988 | EP0256974A2 Apparatus for bending concrete reinforcing steel |
| 02/09/1988 | US4723431 Method for manufacturing formed metal |
| 02/02/1988 | CA1232342A1 Electrical contact and method of manufacture |
| 01/14/1988 | WO1987007537A3 Process and device for cold forming of ferrous and non-ferrous metal sections |
| 01/14/1988 | DE3622113A1 Artistic forging machine |
| 01/05/1988 | CA1231037A1 Tool for producing bends in curved surfaces |
| 12/17/1987 | WO1987007537A2 Process and device for cold forming of ferrous and non-ferrous metal sections |
| 12/17/1987 | DE3619783A1 Apparatus for the production of drive projections on the legs of a bottom strap for a clamped connection in underground yielding arch support |
| 12/17/1987 | DE3619782A1 Method and apparatus for forming perforated feedstock to give a U-shaped top strap |
| 12/10/1987 | DE3618580A1 Method and apparatus for the production of serpentine tubes or bars |
| 12/03/1987 | DE3617986A1 Apparatus for bending a plurality of sectional bars arranged one above the other |
| 11/17/1987 | US4706361 Process for the hot-forming of at least one sheet made of a material that is difficult to work |
| 11/03/1987 | US4704080 Matrix for the production of pellets |