| Patents for B21D 28 - Shaping by press-cutting; Perforating (12,707) |
|---|
| 01/17/1978 | US4068366 Method and apparatus for producing openings in sheet material |
| 01/10/1978 | US4067252 Machine tool with cylindrical assembly units |
| 01/03/1978 | US4065853 Portable punch and die jig |
| 12/13/1977 | US4063059 Punch press with cutting torch |
| 12/06/1977 | US4061507 Wrench and method of making the same |
| 12/06/1977 | US4061064 Apparatus for forming holes in the flanges of structural members |
| 12/06/1977 | US4061056 Method of making outer blades for electric shavers |
| 10/25/1977 | US4055132 Method of forming ports in a fuel burner |
| 10/11/1977 | US4053348 Etching |
| 10/11/1977 | US4052920 Machine for perforating high density poly-ethylene film or the like film material |
| 10/11/1977 | US4052919 Motor-driven bolster plate |
| 10/11/1977 | US4052880 Pipe perforating machine |
| 10/11/1977 | US4052871 Stock-piercing punch mechanism |
| 09/27/1977 | US4050337 Turret alignment system |
| 09/20/1977 | US4048890 Punching tool die |
| 09/20/1977 | US4048835 Method of punching a small hole in a precision mechanics workpiece |
| 08/23/1977 | US4043236 Device for transforming a single pressure force into separate pressure forces |
| 08/23/1977 | US4043234 Apparatus and method for cutting circles from sheet material |
| 08/09/1977 | US4040320 Punching machines |
| 08/02/1977 | US4038894 Piercing apparatus |
| 07/12/1977 | US4034453 Method of manufacturing louver fins for use in heat exchanger |
| 07/05/1977 | US4033216 Duplicating punch press with stylus control |
| 07/05/1977 | US4033166 Sequencing die and method for forming truss webs from metal tubing |
| 07/05/1977 | US4033037 Method and means for punching sheet members |
| 06/28/1977 | US4031787 Punch and stripper assembly |
| 06/28/1977 | US4031737 Machine tool apron guiding system |
| 06/21/1977 | US4030391 Punch press with hydraulically actuated stripper |
| 05/31/1977 | US4026226 Press apparatus and method utilizing same |
| 05/31/1977 | US4026192 Motor driven by a pressurized fluid medium for operating an impacting tool in a linear direction |
| 05/24/1977 | US4024747 Apparatus for conveying punched-out components |
| 05/24/1977 | US4024593 Method of forming flat multiple-sided fastener parts having an opening therein |
| 05/17/1977 | US4023788 Device for automatically shifting a workpiece on a nibbling machine |
| 05/10/1977 | US4022090 Electrically actuated punch press |
| 04/26/1977 | US4019415 Key cutting machine |
| 04/12/1977 | US4017267 Method of die construction using joint structure |
| 04/05/1977 | US4015495 Device for stripping waste from a sheet die cut on a platen press |
| 03/22/1977 | US4012977 Apparatus for controlling movement of stamping device |
| 03/22/1977 | US4012976 Punch press for duplicating workpieces |
| 03/22/1977 | US4012975 High speed punching apparatus and tool therefor |
| 02/22/1977 | US4008638 Die assembly for forming openings in workpieces |
| 02/08/1977 | US4006655 Device for protecting tools and workpieces from damage on a hydraulically or pneumatically operated stamping press |
| 02/08/1977 | US4006527 Apparatus for salvaging scrap metal |
| 02/01/1977 | US4005665 Method for making press-working blanks with reduced ear occurrence |
| 12/21/1976 | US3998498 Apparatus for guiding a ram within the machine frame of a punch press or the like |
| 12/21/1976 | US3998086 Apparatus for perforating the necks of aerosol containers |
| 12/14/1976 | US3996831 Metal shearing machine |
| 12/14/1976 | US3996830 Stamping device with vertically guided frame |
| 11/30/1976 | US3994055 Method of preparing rain gutters for connection thereto of downspouts |
| 11/16/1976 | US3991642 Turret press |
| 11/16/1976 | US3991641 Piercing apparatus |
| 11/16/1976 | US3991639 Apparatus for protecting tools of hydraulic presses |
| 11/16/1976 | US3991638 Rail gun gauge assembly and method |
| 11/16/1976 | US3991602 Press for cold forming of workpieces from a metal sheet |
| 11/09/1976 | US3990240 Control method and apparatus for processing tools |
| 11/09/1976 | US3990142 Circuit board, method of making the circuit board and improved die for making said board |
| 11/02/1976 | US3988947 Coiled flywheel assembly |
| 11/02/1976 | US3988796 Method of making toothed lock washers |
| 10/19/1976 | US3986418 System for making cutouts and angular cuts in stepped siding |
| 10/12/1976 | US3985056 Multiple tool holding punching unit |
| 10/05/1976 | US3983897 Pipe connection means for the connection of crosswisely extending pipes to a longitudinally extending transport pipe |
| 10/05/1976 | US3983739 Work performing member with removable head |
| 09/14/1976 | US3979985 Sheet transfer between a turret punch press and an adjacent apparatus |
| 09/14/1976 | US3979983 Workpiece-handling apparatus |
| 09/14/1976 | US3979981 Cryogenic shearing of metal |
| 09/07/1976 | US3978746 Device for removing flash after resistance butt welding of rails |
| 08/31/1976 | US3977589 Idler roller assembly for punch press feed |
| 08/17/1976 | US3975028 Apparatus for sealing a track shoe |
| 08/17/1976 | US3974728 Multi-part punch |
| 08/10/1976 | US3973454 Stripper insert and method of making and using the stripper insert |
| 08/03/1976 | US3972260 Multiple tool holding punching apparatus |
| 08/03/1976 | US3972215 Apparatus for cutting a curved edge on a metal strip having surfaces in more than one plane |
| 08/03/1976 | US3972107 Method of forming shear sections in posts |
| 07/27/1976 | US3971278 Carriage positioning mechanism |
| 07/27/1976 | US3971275 Nestable die alignment means for punch press machines |
| 07/20/1976 | US3969918 Method and apparatus for blanking coil stock for transfer presses |
| 07/13/1976 | US3968674 Apparatus for simultaneously producing inner and outer rings in hot former |
| 07/13/1976 | US3968673 Method and apparatus for producing steel box toes to be used in safety shoes |
| 07/06/1976 | US3967452 Rain gutter and downspout connection |
| 06/22/1976 | US3964358 Punching apparatus with mechanically movable tool support arm |
| 06/15/1976 | US3962941 Press for perforating and trimming boards of filamentary material |
| 06/15/1976 | US3962768 Method of making tape spring |
| 06/01/1976 | US3960372 Punch press |
| 05/25/1976 | US3958737 Adjustable feed mechanism |
| 05/25/1976 | US3958479 Machine tool having operation control |
| 05/25/1976 | US3958476 Punching device with punch retainer |
| 05/18/1976 | US3956952 Extrusion preparation apparatus |
| 04/20/1976 | US3951026 Punching and nibbling device for a press having a turret |
| 04/13/1976 | US3949589 Removable subdie |
| 04/06/1976 | US3948135 Machine tool |
| 04/06/1976 | US3948075 Apparatus for limiting the working stroke of a press ram |
| 03/16/1976 | US3943809 Rotary tab cutter |
| 03/16/1976 | US3943745 Piercing and coining apparatus |
| 03/16/1976 | US3943744 Louver cutter |
| 02/24/1976 | US3939748 Hydraulic punch press with ram orienting mechanism |
| 02/24/1976 | US3939747 Profile press and precision cutting apparatus with a pressure multiplier |
| 02/24/1976 | US3939683 Piercing tools |
| 02/24/1976 | US3939566 Copying tracer particularly for stamping machines |
| 02/24/1976 | US3939563 Vise and punch tool |
| 02/17/1976 | US3938416 Punching or nibbling presses having a turret |
| 02/17/1976 | US3938413 Extrusion preparation apparatus |