| 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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| 07/17/1979 | US4161110 Automatic control device for a bending machine |
| 05/22/1979 | US4155239 Tube bending apparatus |
| 05/08/1979 | US4153082 Cut-clinch mechanism for variably spaced leads |
| 05/08/1979 | CA1054037A1 Method and apparatus for forming a helical cutter strip for a dry shaver assembly |
| 05/01/1979 | US4151733 Method of producing thrust washers |
| 04/10/1979 | US4148121 Method and apparatus for manufacturing rotationally symmetrical constructional parts such as nozzles and combination chambers of rocket engines |
| 03/27/1979 | US4145904 Bending and helix-forming apparatus |
| 03/06/1979 | CA1050069A1 Sealing bead for use at high temperatures |
| 02/20/1979 | US4139932 Method for winding and forming of cooling coils |
| 02/13/1979 | US4139141 Method and apparatus for manufacture of spirals without axle |
| 02/06/1979 | CA1047908A1 Sheet-plate positioning device for machine tools |
| 01/23/1979 | US4135380 Method of and an apparatus for manufacturing elongated curved tubular elements |
| 12/19/1978 | US4130003 Apparatus for manufacturing helical coils |
| 12/12/1978 | US4129152 Double wall helical pipe and strip configuration for forming same |
| 11/07/1978 | US4124125 Advancing apparatus for spine fin tubing |
| 11/07/1978 | US4123928 Helix winding apparatus |
| 10/31/1978 | US4123073 Sealing bead for use at high temperatures |
| 10/24/1978 | CA1040845A1 Fastening member for anchoring a railway rail |
| 10/17/1978 | US4120187 Forming curved segments from metal plates |
| 10/10/1978 | CA1040088A1 Machine for bending bar or rod material |
| 10/03/1978 | US4117707 Apparatus for shaping electrical coils for dynamoelectric machines |
| 10/03/1978 | US4117702 Rolling machines for contouring tapered structural members |
| 09/12/1978 | US4112728 Device for bending pipes |
| 09/12/1978 | US4112727 Method and apparatus for making pipe flanges |
| 09/05/1978 | CA1037733A1 Reinforcing member for castable material and process of mixing reinforcing elements in said material |
| 05/30/1978 | US4091652 Apparatus for shaping metal sheets |
| 04/25/1978 | US4085608 Return elbow and crossover bender |
| 04/25/1978 | US4085492 Bending and straightening mechanism for mine roof bolts |
| 04/25/1978 | US4085488 Method and apparatus for winding and forming cooling coils |
| 04/18/1978 | US4084420 Method and an apparatus for producing a coiled spring |
| 03/07/1978 | US4077244 Method of and apparatus for continuously winding a rectangular wire |
| 02/07/1978 | US4072036 Bending machine |
| 12/06/1977 | US4061098 Process for bending metal sheet |
| 09/27/1977 | US4050284 Fastening member for anchoring a railway rail |
| 09/20/1977 | US4049026 Bending apparatus having a shaped mandrel used in automatic bending machines for metal wire and bar stock |
| 09/20/1977 | US4048834 Apparatus for forming serpentine heat exchangers |
| 09/20/1977 | US4048826 Device for manufacturing rotationally symmetrical constructional parts |
| 08/30/1977 | US4044636 Method and apparatus for forming a helical cutter strip for a dry shaver assembly |
| 08/09/1977 | US4040285 Method and apparatus for making jewelry bands |
| 08/02/1977 | US4038852 Scroll-forming device |
| 07/05/1977 | US4033572 Sheet-plate positioning device for machine tools |
| 05/31/1977 | US4026137 Twisting and bending machine for elongated metallic strips |
| 05/03/1977 | US4020669 Machine for bending bar or rod material |
| 04/26/1977 | US4019356 Apparatus for the cold working of bar stock |
| 02/08/1977 | US4006623 Positioning device |
| 02/01/1977 | US4005597 File forming press |
| 01/18/1977 | US4003234 Bending apparatus for perforating strips |
| 01/18/1977 | US4003233 Bending and straightening mechanism for mine roof bolts |
| 11/16/1976 | US3991600 Stirrup machine |
| 09/14/1976 | US3979938 Apparatus for bending thin flexible strips |
| 08/31/1976 | US3977228 Tool for forming pipe from sheet metal |
| 07/20/1976 | US3970233 Machine and a method for fabricating a helicoidal tube |
| 07/13/1976 | US3969037 Turbulators |
| 06/29/1976 | US3965720 Hinge adjustment tool |
| 06/29/1976 | US3965714 Golf club bending machine for setting the loft and lie angles of the club head |
| 05/18/1976 | US3956916 Method and apparatus for making fishing lures |
| 04/27/1976 | US3952574 Process and apparatus for forming sheet metal structures |
| 04/06/1976 | US3947939 Method for the manufacture of turbulators |
| 01/20/1976 | US3933020 Method for stretch wrapping of panels |