| Patents for B21D 5 - Bending sheet metal along straight lines, e.g. to form simple curves (9,374) |
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| 09/20/1988 | US4772801 Optical light beam device for automatically controlling the bending operation when bending with a press brake |
| 09/14/1988 | CN87100097A Technique of cold-die of truck beam |
| 09/13/1988 | US4770019 Forming roll, forming process and its apparatus in the pipe mill |
| 09/13/1988 | US4770018 Method for producing cold roll-formed structures |
| 09/13/1988 | US4770017 Apparatus for forming plate with a double-curved surface |
| 09/07/1988 | CN88100264A Method for manufacturing light shaped metal |
| 09/06/1988 | US4768367 Bending brake |
| 09/06/1988 | US4768280 Roll forming of metal articles |
| 08/30/1988 | US4766757 Sheet bending brake |
| 08/23/1988 | US4765171 Apparatus for flanging sheet metal blanks |
| 08/10/1988 | EP0277690A2 Method of making tungsten steel articles by mechanically bending a sheet of tungsten steel |
| 08/09/1988 | US4761985 Apparatus for flanging sheet metal blanks |
| 08/09/1988 | US4761979 Roller bending apparatus equipped with a curvature measuring unit |
| 08/03/1988 | CN88100265A Method for manufacturing light metal profiles |
| 08/02/1988 | CA1239778A1 Method for forming an electric resistance welded steel pipe |
| 07/28/1988 | WO1988005351A1 Method of producing lightweight metal structures |
| 07/28/1988 | WO1988005350A1 Method of producing lightweight metal structures |
| 07/14/1988 | WO1988004968A1 Method of guiding material to fin-pass roll and its guide roll stand |
| 07/14/1988 | WO1988004967A1 Machine for cutting and bending sheet material |
| 07/13/1988 | EP0274159A2 Bending machine for the production of rectangular sheet metal panels from flat metal sheets |
| 07/13/1988 | CN87108383A Method of introducing stuff into finishing roll and guide supports therefor |
| 07/13/1988 | CN87107416A Robotized handling device and sheet metal bending system featuring same |
| 06/28/1988 | US4753100 Process and apparatus for controlling a lifting support on sheet-metal presses |
| 06/28/1988 | US4753099 Bending press for sheet metal |
| 06/28/1988 | CA1238564A1 Press machine |
| 06/09/1988 | DE3643190C1 Folding machine |
| 05/31/1988 | US4747289 Method of forming seam-welded tubes |
| 05/17/1988 | CA1236675A1 Rounded corrugated sheet and machine and method for its manufacture |
| 05/11/1988 | DE3638083A1 Bending die |
| 05/11/1988 | DE3637985A1 Bending die |
| 04/21/1988 | DE3729868C1 Method for the production of a cylinder from an elongate sheet-steel blank |
| 04/20/1988 | EP0264349A1 Safety device for a folding press or analogous machine |
| 04/19/1988 | US4738018 Combined bending and cutting machine for metal sheet and plate |
| 04/12/1988 | US4736612 Compensating die holder |
| 04/12/1988 | CA1235053A1 Bending tool |
| 04/06/1988 | EP0262196A1 Press for flanging a rectangular metal sheet |
| 04/05/1988 | US4735079 Method and apparatus for the mechanical manipulation of metal sheets, particularly for folding operations |
| 04/05/1988 | US4735076 Process for the production of a conical shell using sheet metal bending rolls |
| 04/05/1988 | US4735072 Straightener roll machine for brake shoe |
| 03/31/1988 | DE3632123A1 Bending press |
| 03/24/1988 | WO1988001916A1 Adaptative control system for hydraulic press brake |
| 03/22/1988 | US4732032 Die crowning apparatus for press brake |
| 03/16/1988 | EP0259479A1 Cold roll-formed structures and method and apparatus for producing same. |
| 03/15/1988 | CA1234039A1 Adjustable bolster block |
| 03/08/1988 | CA1233702A1 Slip lock forming apparatus |
| 03/08/1988 | CA1233623A1 Apparatus for the handling of metal sheets |
| 03/02/1988 | EP0258204A2 Apparatus for press-bending metal sheets |
| 02/24/1988 | EP0257015A2 Apparatus for press-bending metal sheets |
| 02/24/1988 | EP0256245A2 Tool holder for a folding machine or the like |
| 02/23/1988 | US4726210 Method and apparatus for making can bodies from sheets |
| 02/16/1988 | US4724695 Quickly convertible roller forming machine |
| 02/04/1988 | DE3725020A1 Rounding machine for the production of tapered tube sections from sheet metal |
| 02/02/1988 | US4722214 Split die for holding work during bending operation |
| 02/02/1988 | CA1232185A1 Portable sheet bending brake |
| 01/20/1988 | CN87101818A Cold roll-formed structures and method and apparatus for producing same |
| 01/19/1988 | US4719830 Apparatus for controlling heat deformation of a turret punch |
| 01/13/1988 | CN87101950A Plate glass press |
| 01/07/1988 | EP0251287A1 Apparatus for exchanging tool of bending machine |
| 01/07/1988 | EP0250594A1 Forming roll for pipe mills and forming method and apparatus using same |
| 01/05/1988 | US4716754 Roll forming machine |
| 01/05/1988 | CA1231037A1 Tool for producing bends in curved surfaces |
| 12/23/1987 | EP0249775A2 Method of controlling a press brake plate lifter |
| 12/23/1987 | DE3720412A1 Multi-step bending machine e.g. press brake |
| 12/22/1987 | US4713957 Reverse bend attachment for a sheet metal brake |
| 12/22/1987 | US4713924 Structural beam and panel systems and methods and apparatus for making the same |
| 12/16/1987 | EP0248845A1 Press forming sheet metal |
| 12/16/1987 | CN87103917A 辊轧成型机 Roll forming machine |
| 12/02/1987 | EP0247886A2 Roll forming machine |
| 11/25/1987 | EP0246838A2 Mould assembly for use in the manufacture of a shadow mask for a colour cathode ray tube |
| 11/25/1987 | CN87103713A Hot-pressing shaping equipment of shadow mask adapted to colour-display tube from plate form part |
| 11/25/1987 | CN86108581A Curling method for edges of metal sheet |
| 11/24/1987 | US4708573 Apparatus for the handling of metal sheets |
| 11/24/1987 | US4708009 Bending device for the production of formed parts consisting of wire or strip sections |
| 11/17/1987 | US4706491 Process and apparatus for precision folding of sheet metal |
| 11/17/1987 | US4706489 Single station hemming tooling |
| 11/17/1987 | US4706488 Method of roll forming cylindrical pipe |
| 11/12/1987 | DE3615771A1 Process and apparatus for the round-bending of metal sheets |
| 11/03/1987 | CA1228790A1 Straightening machine for motor armature assemblies and the like |
| 10/29/1987 | DE3709984C1 Method and device for manufacturing evaporators for refrigerating furniture |
| 10/28/1987 | EP0151608B1 Improvements in bending machines |
| 10/21/1987 | EP0242309A1 Bending press with pivoting beam |
| 10/08/1987 | WO1987005838A1 Press for flanging a rectangular metal sheet |
| 10/06/1987 | US4697446 Roll forming apparatus |
| 10/06/1987 | US4697321 Method of manufacturing baffles for shell and tube type heat exchangers |
| 09/24/1987 | WO1987005651A1 Cold roll-formed structures and method and apparatus for producing same |
| 09/23/1987 | EP0237800A1 Bending press for die-bending, in particular sheets |
| 09/16/1987 | EP0237234A2 Method for the production of a composite pipe and an apparatus for carrying out said method |
| 09/16/1987 | EP0237231A1 Glass sheet press bending system |
| 08/27/1987 | DE3605815A1 Apparatus for the bending of sheet plates |
| 08/25/1987 | US4689261 Rounded corrugated sheet and method and apparatus for its manufacture |
| 08/25/1987 | CA1225914A1 Apparatus for and methods of bending metal strip |
| 08/19/1987 | EP0232331A1 Roll forming of metal articles. |
| 08/12/1987 | EP0231735A1 Synchronization device for a hydraulic multiple cylinder drive |
| 08/12/1987 | CN86108883A Synchronous control device of multi-hydraulic-cylinder drive |
| 08/05/1987 | EP0231092A2 Bending machine |
| 07/30/1987 | WO1987004374A1 An edging machine |
| 07/21/1987 | US4680955 Die exchange device |
| 07/16/1987 | WO1987004096A1 Forming roll for pipe mills and forming method and apparatus using same |
| 07/14/1987 | CA1224127A1 Sheet bending brake |
| 07/08/1987 | EP0227870A1 Automatically controlled machine for rolling metal sheets |