Patents for B21D 37 - Tools as parts of machines covered by this subclass (19,804)
12/1988
12/20/1988US4792318 Device for warm press forming a plate-like member into a shadow mask for a color cathode ray tube
12/20/1988US4791803 Die-change device for a multi-stage forming machine
12/14/1988EP0295171A2 Quick tool mounting system for presses of 20 to 200 tons
12/14/1988EP0294765A1 Precision punching machine and associated tool change method
12/07/1988CN88105061A Method for prosessing die by coating technique
11/1988
11/29/1988US4787237 Failsafe tool clamping system for press brake
11/23/1988EP0292357A1 Method for cutting thin sheets, in particular metal plates, and elastomeric material used in this method
11/17/1988EP0162851B1 Antifriction bearing assembly for a die set or the like
11/17/1988DE3715201A1 Shaping tool for the three-dimensional deformation of metal parts
10/1988
10/27/1988DE3708368C1 Process for the production of a stamping tool
10/25/1988US4779443 Complex pressing die apparatus
10/25/1988US4779329 Tool changer for rotatable tool assemblies in punching machines
10/18/1988CA1243162A1 Die clamping device
10/12/1988EP0286553A1 Clamping apparatus for the releasable fixing of conformation moulds on plates of moulding presses
10/06/1988WO1988007420A1 Mold lubricant discharging apparatus for knockout systems
09/1988
09/15/1988DE3707416A1 Device for clamping tools
08/1988
08/17/1988EP0278046A1 Device for stamping complex matrix figures out of a metallic strip
08/16/1988US4763422 Device for presetting the tools in a platen press
08/11/1988WO1988005809A1 Propoxylated guerbet alcohols and esters thereof
08/04/1988DE3249799C2 Spherical rolling element for interchangeable use in a press support block
08/03/1988EP0276391A2 Sheet metal working machine with a tool magazine
07/1988
07/12/1988US4756630 For punch presses
07/05/1988CA1238816A1 Refractory metal coated metal-working dies
07/05/1988CA1238775A1 Multiple processing machine
06/1988
06/29/1988EP0272305A1 Apparatus and method for forming an integral object from laminations.
06/22/1988CN85101993B Method of punching corrugated shielding plate for color television kine scope and its apparatus
06/21/1988US4752352 Apparatus and method for forming an integral object from laminations
06/21/1988US4751860 Method of making blanking die sets
06/15/1988EP0270762A1 Press whose base is elastically supported in a vertical direction
05/1988
05/19/1988DE3637566A1 Clamping device for top tools with clamping pins which can be secured under the clamping surface of press rams
05/18/1988CN87107126A Hydraulic lifting device for presses
05/11/1988EP0266626A2 Lower tool holder for a die or the like
05/11/1988EP0266625A2 Upper tool holder for a punch or the like
05/11/1988EP0266624A2 Upper tool holder for a punch or the like
05/11/1988EP0266623A2 Upper tool holder for a punch or the like
05/10/1988US4744036 Microprocessor controlled hydraulic system for clamping a die to a press
05/03/1988US4741092 Handling device for changing tools of a cutting press
04/1988
04/28/1988DE3635146A1 Method for the production of a tungsten-carbide punch tip
04/27/1988EP0264770A2 Hydraulic lifting device for presses
04/20/1988CN87207329U Radial translation device of punch die
03/1988
03/29/1988US4733552 Multi-station punch/die press for progressive strip stock operations at variable index length
03/15/1988US4731144 Bonding, deforming metal sheets with honeycomb structure between
03/08/1988CA1233634A1 Empirical method for determining the shape of a vehicle body membrane panel
03/02/1988EP0257674A2 Punching or stamping machine
03/02/1988CN87207544U Shaping die with winch
02/1988
02/23/1988US4726273 Combination press for die-sets
02/23/1988US4726270 Removing a punch from a retainer block
02/02/1988US4722125 Method for producing a tungsten carbide tip punch
01/1988
01/27/1988CN87200683U Die for manufacture of stainless steel presure pot with top of kitchen range
01/26/1988US4721518 Having a cermet base, intermediate metal carbide, nitride or oxide layer, group eight metal alloy mold surface
01/19/1988US4719786 Reinforced plastic retainer rings for sheet metal forming and method of making
01/19/1988US4719691 Tool change mechanism for punch presses and the like
01/14/1988DE3620964A1 Device for transferring heavy loads from one place of storage to another
01/13/1988EP0252635A2 Complex pressing die apparatus
01/12/1988US4718339 Press with chucking plates for sets of tools
01/12/1988US4718161 Press tool comprising interchangeable working parts
01/07/1988EP0251287A1 Apparatus for exchanging tool of bending machine
12/1987
12/31/1987CN87201189U Die set for fuel tank of vehicles
12/29/1987US4715775 180 degree inverting machine
12/17/1987WO1987007538A1 Apparatus and method for forming an integral object from laminations
12/17/1987DE3620193A1 Pressing and/or cutting tool clamping device for presses
12/09/1987CN86206375U Cold pressing mould for making radiator pieces
11/1987
11/25/1987EP0246838A2 Mould assembly for use in the manufacture of a shadow mask for a colour cathode ray tube
11/25/1987CN87103713A Hot-pressing shaping equipment of shadow mask adapted to colour-display tube from plate form part
11/24/1987US4708626 Mold assembly
11/18/1987CN86209071U Waste-free multiple-piece moulding die for forming elastic check ring of hole
11/17/1987US4706532 Cutting equipment with rules
11/17/1987CA1229363A1 Antifriction bearing assembly for a die set or the like
11/10/1987US4704890 Press tool provided with a system for guiding and relieving a metal strip
11/10/1987CA1228961A1 Mold changer for a press preferably an injection molding machine
11/03/1987US4703644 Die apparatus having an electromagnetic drive
10/1987
10/21/1987EP0241933A1 Press comprising a frame and a tool consisting of at least two parts
10/20/1987CA1228283A1 Tube flaring tool die assembly
09/1987
09/30/1987CN86101869A Fabrication technique and application of fully steel-rimmed epoxy plastic dies
09/29/1987CA1227331A1 Press for adjusting and inspecting molds
09/23/1987EP0237575A1 Mold assembly
09/15/1987CA1226713A1 Press machine
08/1987
08/19/1987EP0232352A1 Punch press
08/13/1987DE3703700A1 Stamping press tool unit
07/1987
07/28/1987US4682401 Multiple processing machine
07/21/1987US4680955 Die exchange device
06/1987
06/30/1987US4676090 Press machine with an adjustable shut height
06/30/1987CA1223466A1 Die clamping arrangement
06/15/1987EP0210195A4 Ball-point writing instrument containing an aqueous ink composition.
06/10/1987EP0224792A1 Tool-changing arrangement for a multistage metal-forming machine tool
05/1987
05/19/1987US4665607 Machine for working sheet material such as sheet metal
05/19/1987CA1221904A1 Press and method of making same
04/1987
04/28/1987US4660406 Die manipulator
04/28/1987US4660404 Die manipulator
04/23/1987DE3537337A1 Clamping device
04/14/1987US4656902 Metal stamping tool with working parts removable while on the machine
04/07/1987US4655071 Transfer press with quick change die set arrangement
03/1987
03/31/1987US4653310 Die assembly for use in general type mechanical press machine
03/26/1987WO1987001627A1 Mold assembly
03/26/1987DE3533062A1 Tool conveying device for machines, especially for presses
03/25/1987CN85103983A Process for manufacturing molds and molds made thereby
03/17/1987US4649622 Tool changing apparatus for a punch press
03/10/1987US4648727 Antifriction bearing assembly for a die set or the like
03/03/1987US4646600 Cutting press with tool magazine
02/1987
02/24/1987US4644836 Punch press with vertically reciprocating plunger