| Patents for B21D 28 - Shaping by press-cutting; Perforating (12,707) |
|---|
| 12/11/1979 | US4177659 Rotatable piercing tools for forming holes surrounded each by a boss in metal plates or the wall of metal tubes |
| 12/11/1979 | CA1067815A1 Apparatus for piercing sheet material |
| 12/04/1979 | US4176441 Locking joint machine |
| 11/28/1979 | EP0005634A1 Safety devices for mechanically operated apparatus such as punch presses |
| 11/20/1979 | US4174648 Punch retainer |
| 11/13/1979 | CA1066183A1 Turret punches |
| 10/23/1979 | US4171656 Tools and dies facilitating accurate positioning of tools and their connection to retainers |
| 10/16/1979 | US4170910 Angle iron cutting |
| 10/16/1979 | CA1064389A1 Sheet punching machine |
| 10/16/1979 | CA1064320A1 Machine press, specifically stamping press |
| 10/16/1979 | CA1064242A1 Automatic side gauge for machine tool workpiece control and method |
| 10/09/1979 | CA1063925A1 Shock dampening systems for presses |
| 10/09/1979 | CA1063924A1 Punch and stripper assembly |
| 09/25/1979 | US4168644 Reciprocating tool machine particularly for stamping or nibbling |
| 09/19/1979 | EP0004252A1 Method for making a funnel for aerosol containers |
| 09/18/1979 | US4168136 Self-threading ribbon conveyor |
| 09/05/1979 | EP0003745A1 Apparatus for suppressing cutting shocks in hydraulic presses |
| 09/04/1979 | US4166403 Method of making a rigidly supported molded plastics material punch guide and stripper |
| 08/28/1979 | US4165784 Casing perforator |
| 08/28/1979 | US4165669 Modular turret punch press |
| 08/28/1979 | US4165667 Punch press with workpiece supporting means |
| 08/22/1979 | EP0003518A1 Method for preparing countersunk holes in a metal component |
| 08/21/1979 | CA1060775A1 Apparatus for perforating tubing |
| 08/14/1979 | US4164158 Punching apparatus |
| 08/14/1979 | CA1060490A1 Tip table worktable section |
| 07/31/1979 | US4162734 Aligning and stacking arrangement |
| 07/31/1979 | US4162641 Automatic loading and unloading for numerically controlled turret punch |
| 07/25/1979 | EP0003131A2 Pull-out blank in a sheet metal cabinet wall |
| 07/24/1979 | US4161873 Internal and external extruded nipples or nozzles in pipe headers or boiler drums |
| 07/24/1979 | CA1058917A1 Cutting die assembly |
| 06/26/1979 | CA1057133A1 Method and apparatus for producing steel box toes to be used in safety shoes |
| 06/12/1979 | CA1056296A1 Punch press with c-shaped frame |
| 05/29/1979 | US4156377 Metal working machine |
| 05/29/1979 | CA1055279A1 Method for forming counter-sunk hole in a base material and an apparatus for carrying out the same |
| 05/15/1979 | US4154130 Cutting press with stroke terminating means |
| 05/01/1979 | US4151769 Tube louvering machine |
| 05/01/1979 | US4151768 Apparatus and method for forming templates |
| 05/01/1979 | CA1053570A1 Apparatus for one-pass punching of beams |
| 04/24/1979 | US4150451 Die holder assembly |
| 04/24/1979 | CA1053145A1 Electrically actuated punch press |
| 04/10/1979 | USRE29958 Punch and stripper assembly |
| 04/03/1979 | USRE29950 Punching device with punch retainer |
| 03/20/1979 | US4144785 Parting tool |
| 03/20/1979 | US4144783 Apparatus for blanking sheet materials |
| 03/20/1979 | US4144736 Die forging press |
| 03/13/1979 | US4143574 Stamping device for a fineblanking press |
| 03/13/1979 | US4143571 Assemblies for workpiece positioning |
| 03/13/1979 | US4143569 Die holder for punch presses |
| 03/13/1979 | CA1050416A2 Score and tool for forming the score |
| 03/13/1979 | CA1050351A1 Combined punch press and cutting torch with workpiece supporting means |
| 02/27/1979 | US4141264 Adjustable high speed punch |
| 02/21/1979 | EP0000762A1 A punch stripper assembly and method of making same |
| 02/20/1979 | CA1049102A1 Punch press with cutting torch |
| 02/20/1979 | CA1048923A1 Multi-part punch and method of forming same |
| 02/20/1979 | CA1048817A1 Sequencing die and method for forming truss webs from metal tubing |
| 02/13/1979 | CA1048402A1 Die holder for punch presses |
| 02/06/1979 | CA1047915A1 Idler roller assembly for punch press feed |
| 01/30/1979 | US4136628 Methods of and apparatus for making slotted beam contact elements |
| 01/30/1979 | US4136592 Apparatus for one-pass punching of beams |
| 01/30/1979 | CA1047389A1 Machine for perforating high density polyethylene film or the like film material |
| 01/02/1979 | US4132103 Method of producing an annular part for use as a diaphragm |
| 12/26/1978 | US4131040 Printing blanket hole forming apparatus and method |
| 12/05/1978 | US4128028 Piercing apparatus |
| 11/28/1978 | CA1043176A1 Method of and apparatus for perforating the necks of aerosol containers |
| 11/14/1978 | US4125045 Sheet punching machine |
| 11/14/1978 | CA1042342A1 Punching device with punch retainer |
| 10/31/1978 | US4122736 Apparatus and method for perforating an article |
| 09/26/1978 | US4116122 Hydraulic driven press |
| 09/26/1978 | US4116100 Device for fastening cutting dies on a base plate |
| 09/19/1978 | US4114218 Method of forming flat four-sided fastener parts having an opening therein |
| 09/19/1978 | CA1038741A1 Machine tool apron guiding system |
| 09/12/1978 | CA1038281A1 Perforating machine for forming side flanged openings |
| 08/22/1978 | US4108320 Aligning and stamping arrangement |
| 08/15/1978 | US4107541 Workpiece hole presence and absence inspector |
| 08/15/1978 | US4106380 Angle iron cutting |
| 08/15/1978 | US4106183 Combined punch press and cutting torch with workpiece supporting means |
| 08/08/1978 | US4104941 Assembly for enabling close tolerance punching with a reusable system |
| 08/01/1978 | US4103574 Tool assembly, method of manufacture and components thereof |
| 08/01/1978 | US4103414 Machine tool with at least one tool magazine |
| 08/01/1978 | US4103413 Method and arrangement for fastening and centering punching tools |
| 07/25/1978 | US4102735 Die and method of making the same |
| 07/11/1978 | US4099436 Apparatus for piercing sheet material |
| 07/04/1978 | US4098161 Apparatus for performing sequential fabricating operations on a workpiece |
| 07/04/1978 | US4098108 Punch and die assembly for use in the production of heat exchanger fins |
| 06/27/1978 | US4096776 Retainer for punch and die sets |
| 06/27/1978 | US4096774 Turret punches |
| 06/27/1978 | US4096727 Punching, stamping and rivetting apparatus |
| 06/13/1978 | US4094605 Apparatus for producing identical sheets of material having a number of representations thereon |
| 06/06/1978 | US4092892 Hole forming machine |
| 06/06/1978 | US4092888 Self-stripping punch and guide assembly |
| 05/30/1978 | US4091700 Press-head |
| 05/09/1978 | US4088048 Method and device for holing |
| 04/18/1978 | US4084490 Container bottom cutting apparatus and method |
| 04/04/1978 | US4082026 Portable press |
| 03/28/1978 | US4080855 Tip table worktable section |
| 03/21/1978 | US4079617 Pneumatic press |
| 03/14/1978 | US4078462 Guard for a punch press |
| 02/21/1978 | US4074432 Index cover for knock-out punch |
| 02/14/1978 | US4073176 Piercing and flanging apparatus |
| 02/07/1978 | US4072039 Method for forming counter-sunk hole in a base material and an apparatus for carrying out the same |