Patents for B21D 28 - Shaping by press-cutting; Perforating (12,707) |
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07/29/1981 | EP0032628A2 Punch press |
07/28/1981 | US4280426 Method of manufacturing wheel discs |
07/14/1981 | US4277994 Matrix element |
07/14/1981 | US4277868 Machine and method for single pass taper milling |
07/07/1981 | US4277200 Structure to retard fretting and method of manufacture |
06/30/1981 | US4275924 Hinge mount having a wobble gear adjuster for a tiltable seat back of a motor vehicle seat |
06/24/1981 | EP0030649A2 Process for the production of lids made of sheet metal for containers, especially cans |
06/09/1981 | US4272812 Numerical control apparatus for stepped feeding at punch and nibbling machines |
05/26/1981 | US4269283 Method and apparatus for acoustical damping of punching machines and the like |
05/26/1981 | US4269094 Device for punching holes in tubing |
05/26/1981 | CA1101782A1 Safety devices for mechanically operated apparatus such as a punch press |
05/19/1981 | US4267758 Actuator mount for power shear or punch |
05/19/1981 | US4267753 Apparatus for producing a blank from stock material |
05/13/1981 | EP0028588A1 Automatic punching machine |
05/05/1981 | US4265104 Method and device for cutting a metal strip simultaneously into at least three continuous comb-shaped components |
04/28/1981 | CA1099959A1 Metal forming process |
04/14/1981 | US4261237 Rigidly supported molded plastics material punch guide and stripper |
03/31/1981 | CA1098438A1 Pneumatic press |
03/24/1981 | US4257292 Piercing units |
03/24/1981 | US4257251 Metal forming process |
03/17/1981 | US4255993 Angle iron cutting |
03/10/1981 | CA1097134A1 Printing blanket hole forming apparatus and method |
02/17/1981 | US4250785 Turret type punch press having a plurality of strikers |
02/17/1981 | US4250784 Press for punching and cutting plate-shaped workpieces, especially sheet metal workpieces |
02/10/1981 | CA1095399A1 Die holder assembly |
02/03/1981 | US4248111 Punch guide assembly |
02/03/1981 | US4248075 Method of forming aperture with rounded edges in sheet material |
02/03/1981 | CA1094888A1 Pipe perforating machine |
01/27/1981 | US4246815 Volumetrically deformed polymeric support for punches |
01/20/1981 | US4245491 Method and device for producing hollow articles having flanges |
01/07/1981 | EP0021591A2 Anti-slip grating |
12/30/1980 | US4241632 Blanking machine for blanking holes in sheet of metal |
12/30/1980 | CA1092505A1 Method and apparatus for safety for presses and the like |
12/24/1980 | WO1980002856A1 Beveled lobe anti-skid grating and method of manufacturing same |
12/23/1980 | US4240314 Centering and wear compensating means for punch presses and the like |
12/23/1980 | CA1092018A2 Turret punches |
12/16/1980 | CA1091573A1 Punch retainer |
12/09/1980 | CA1091143A1 Container bottom cutting apparatus and method |
11/26/1980 | EP0019200A1 Numerically controlled notching press |
11/18/1980 | US4233872 Hydraulic shock absorption in punch or cutting presses |
11/18/1980 | CA1089758A2 Sheet metal web handling method, apparatus and coil construct |
11/11/1980 | US4232575 Arrangement for punching out circular blanks |
11/11/1980 | CA1089410A1 Internal and external extruded nipples or nozzles in pipe headers or boiler drums |
11/11/1980 | CA1089256A1 Apparatus for punching, drilling or otherwise working a profile steel member |
10/29/1980 | EP0017920A1 Cutting tool for cutting out a cut of sheet metal |
10/28/1980 | US4230011 Automatic center punch for templates |
10/28/1980 | CA1088651A1 Apparatus for forming holes in the flanges of structural members |
10/28/1980 | CA1088486A1 Sheet metal web handling method, apparatus and coil construct |
10/21/1980 | US4228672 Rotary notcher and former |
10/15/1980 | EP0017632A1 Method and apparatus for adjusting roller rings on a shaft |
10/14/1980 | US4227449 Punching press |
10/14/1980 | US4227393 Method and apparatus for punching openings in tubes |
10/07/1980 | US4226109 Tool for the stamping of holes or the like in sheet material such as metal plate |
09/23/1980 | US4223547 Method of hole forming |
09/23/1980 | CA1086214A1 Rigidly supported molded plastics material punch guide and stripper and method of making same |
09/17/1980 | EP0015580A1 Improvements in or relating to methods of and/or apparatus for punching holes in sheet metal |
09/02/1980 | US4220062 Machine having a plurality of reciprocating working tools which may be selectively brought into operation |
08/20/1980 | EP0014400A2 Multisectional liner for linear, roof-shaped, hollow charges |
08/12/1980 | US4217068 Protecting device of a clamping means for a sheet-shaped material working machine |
08/05/1980 | CA1083031A1 Method and apparatus for producing openings in sheet material |
07/29/1980 | US4214496 Shock dampening systems for presses |
07/22/1980 | US4213733 Automatic side gauge for machine tool workpiece control and method |
07/22/1980 | US4213319 Thickness gauge |
07/22/1980 | CA1082097A1 Angularily settable punch and die apparatus |
07/22/1980 | CA1082049A2 Sheet metal web handling method, apparatus and coil construct |
07/15/1980 | CA1081438A1 Press forming of flanged articles |
07/08/1980 | USRE30324 Letter and number kits and the process of preparing same |
07/08/1980 | US4211099 Apparatus for making slotted beam contact elements |
07/01/1980 | US4210041 Method for cutting a plurality of identical, irregular, non-polygonal pieces from material with minimum waste |
07/01/1980 | CA1080611A1 Rotary die lock structure |
07/01/1980 | CA1080451A1 Making insulation-piercing, slotted beam electrical connectors |
06/24/1980 | US4208935 Control system for a hydraulic press |
06/10/1980 | US4206667 Tool holding apparatus for presses |
06/03/1980 | US4205567 Apparatus for safety operating presses and the like |
06/03/1980 | US4205548 Stamping tools |
06/03/1980 | US4205545 Method of forming louvered openings in tubular members |
05/27/1980 | US4204380 Device for conveying, stacking, and packing aligned laminations of electrical machines |
05/20/1980 | US4203336 Punch change mechanism for a double pressure pin press |
05/14/1980 | EP0010685A1 Punch and winding machine |
05/13/1980 | CA1077387A1 Automatic load unload turret punch |
05/06/1980 | US4201905 Laser cutting head attachment for punch presses |
05/06/1980 | CA1076951A1 Retainer for punch and die sets |
04/29/1980 | US4200019 Table stop for a cutting machine |
04/29/1980 | US4199971 Method for the manufacture of profiled reed blades for loom reeds |
04/29/1980 | CA1076473A1 Parting tool |
04/22/1980 | US4198884 Method of manufacturing a punching die |
04/15/1980 | US4197772 Automatic feeding apparatus for punch press |
04/01/1980 | US4195565 Fluid-operated press |
04/01/1980 | CA1074691A1 Holing method and device |
03/19/1980 | EP0008773A1 Punch press with laser cutting head attachment |
03/11/1980 | CA1073341A1 Cutting press with stroke terminating means |
03/04/1980 | US4191080 Apparatus for punching storm sashes |
02/12/1980 | US4187752 Rotary die lock structure |
02/06/1980 | EP0007776A1 Press for installing fasteners in workpieces |
02/05/1980 | US4186581 Drive arrangement for a tool carriage of a machine tool |
01/09/1980 | EP0006285A1 Method of manufacturing push plate and actuator rod assemblies; products made according to this method |
01/08/1980 | US4182022 Device for tool changing in punching machines |
01/08/1980 | CA1069385A1 Method and arrangement for fastening and centering punching tools |
12/25/1979 | US4180357 Apparatus and method for perforating tubing and method of producing part of such apparatus |
12/25/1979 | CA1068596A Assembly for enabling close tolerance punching with a reusable system |