Patents for B21D 37 - Tools as parts of machines covered by this subclass (19,804)
10/1992
10/01/1992CA2083384A1 Metal sheet processing apparatus
09/1992
09/22/1992US5149935 Method and apparatus for forming amalgam preform
09/22/1992US5148698 Compression tool
09/17/1992DE4208190A1 Changeover system for extruder nozzles - has layout to store different nozzle sizes and moves them on supports into position where device takes them to mounting on extruder
09/16/1992WO1992016320A1 Transfer feeder crossbar automatic exchange system and control system therefor
09/15/1992US5147091 Clamping apparatus
09/15/1992US5146774 Lift mechanism for installation and removal of press brake dies
09/01/1992US5143747 Coating with organosilicon compound, doping with inert gas to transform to silicon carbide; wear resistance
08/1992
08/26/1992EP0499704A1 Device for greasing strip or plate-like workpieces
08/19/1992EP0499513A1 Device with variable thermal conductivity for placing between a heating and a cooling platen of a machine such as a press
08/19/1992EP0499197A2 Improved die tooling for metal working and method for its production
08/12/1992EP0497983A1 Tool selection method for punch press machine
08/12/1992CA2060918A1 Variable heat conduction device to be placed between a heating platen and a cooling platen of a machine such as a press
08/06/1992DE4103348A1 Industrial mechanic training appts. to learn exact setting mechanical machine work cycles - is designed as toggle lever press and can be arranged interchangeable with tool and workpiece reception units and corresp. tools e.g. for stamping and bending
08/04/1992US5135382 Mold for forming composite-material structures
08/04/1992US5134873 Die exchange apparatus for the use of a press brake
07/1992
07/24/1992CA2057376A1 Guide sleeve, guide post and improved ball bearing assembly
07/15/1992EP0494843A1 Method for making a double-walled tubular piece .
07/14/1992US5129254 Rollingly transportable press die apparatus
07/01/1992CN2108595U Die for metal sheet forming
07/01/1992CN1062312A Method for making punch pin of zinc shell of electric cell
06/1992
06/30/1992US5125252 Variable geometry tube bending dies
06/16/1992US5121538 Deceleration method and apparatus for a moving bolster for a press
06/09/1992US5120179 Die cart with integral frame and fluid reservoir
06/09/1992US5119658 Method and device for forming a sheet-metal blank in particular in order to make a cathode ray tube mask, and cathode ray tube mask obtained according to this method
06/09/1992CA1302868C Upper tool support for a stamping machine or the like
06/04/1992DE4202350A1 Ejector interchange device for multiple die press - has non-movable machine ejectors
06/03/1992EP0488842A1 Clamping apparatus
06/02/1992CA1302171C Method for blanking thin sheets, and in particular metal sheets and elastomeric material of utility for said method
05/1992
05/26/1992CA1301617C Apparatus and method for forming an integral object from laminations
05/19/1992US5113736 Electromagnetically driven punch press with magnetically isolated removable electromagnetic thrust motor
05/19/1992US5113686 Zero-Tolerance die location pin
05/19/1992US5113684 Electronic braking system for power press die change carriers
05/14/1992WO1992005913A3 Method and apparatus for forming amalgam preform
05/14/1992WO1992000186A3 Electromagnetically driven punch press with magnetically isolated removable electromagnetic thrust motor
05/13/1992EP0484373A1 Arrangement at press line.
05/12/1992CA1300435C Progressive die apparatus having resilient tool support means
04/1992
04/28/1992US5108816 Punch made of heterogenous composite elastic material
04/23/1992WO1992006806A1 Electronic braking system for power press die change carriers
04/23/1992CA2094031A1 Electronic braking system for power press die change carriers
04/16/1992WO1992005913A2 Method and apparatus for forming amalgam preform
03/1992
03/25/1992CN2099621U U shape bending combined terrace die
03/17/1992US5096307 Guide sleeve, guide post and improved ball bearing assembly
03/17/1992US5095733 Maintaining a preferred vibration mode in an annular article
03/17/1992US5095730 Whisker reinforced ceramic material working tools
03/11/1992EP0473865A2 Conveyor unit
03/11/1992CN2098336U Combination dies for stamping can
03/10/1992US5095419 Method of defining hole position of punch mounting part
03/10/1992US5094796 Elastically deformable die and method of die forming using the die
03/05/1992DE4027900A1 Stamping and bending machine for wire components - has slide to transfer tools from storage unit to work station
03/03/1992US5092558 Metal mold having a ceramic coating for forming sintered part
02/1992
02/26/1992EP0472200A2 A punch press and a tool magazine for the press
02/20/1992WO1992002657A1 A method of producing tools and dies
02/19/1992CN1015516B Spiral bevel-gear cold-straighening technological equipment and straightening method thereof
02/11/1992US5087280 Floating mold changer carriage
02/06/1992WO1992001522A1 Tool selection method for punch press machine
01/1992
01/29/1992EP0468855A1 Arrangement for quick tool-change in a press
01/29/1992EP0467993A1 Removable slide presses
01/23/1992DE4031307A1 Actuating equipment for press or injection-tooling - has piston-cylinder unit with locking mechanism
01/21/1992US5081861 Resin die for sheet metal pressing and method for producing same
01/21/1992US5081859 Device for pressing sheet material on an elastic forming die
01/09/1992WO1992000186A2 Electromagnetically driven punch press with magnetically isolated removable electromagnetic thrust motor
01/09/1992CA2085225A1 Electromagnetically driven punch press with magnetically isolated removable electromagnetic thrust motor
01/07/1992US5077998 Machine tool
01/06/1992CA2046197A1 Bending machine for skein-shaped material, in particular wire
12/1991
12/31/1991US5076092 Yieldable roller assembly for a die set in a stamping press
12/27/1991EP0462686A1 Device for pressing and punching of workpieces
12/27/1991EP0462395A2 Installation for the production of pressed articles
12/26/1991WO1991019591A1 Storage system for automatically storing and removing dies and a method of operation therefor
12/24/1991US5074143 Cart for removing and installing dies in a cut-off press
12/19/1991DE4019141C1 Automatic metal press system - involves upper and lower tool carrier plates which can move sideways
12/17/1991US5072819 Roller conveyor device and scraper for roller
12/12/1991WO1991018736A1 Modular die lifting system
12/10/1991US5070593 Punch press
12/03/1991US5069089 Method of machining a press die
11/1991
11/27/1991CN1056449A Dies for shaping big irregular metal-sheet parts
11/26/1991US5067336 Device for pressing sheet material
11/26/1991CA1292422C Upper tool support for a stamping machine or the like
11/06/1991EP0455164A1 A turret punch press with a die exchanging device
10/1991
10/29/1991CA1291416C Rotary apparatus
10/23/1991EP0452791A1 Press tool
10/16/1991EP0451806A1 Press tool
10/15/1991US5057256 Process for manufacturing a tool, particularly a tool for stamping and printing metal sheet parts
10/11/1991WO1991015313A1 Ball lock punch retainer
10/08/1991US5054353 Blanking press
10/03/1991WO1991014520A1 Punch press
10/01/1991US5052208 Machine tool
09/1991
09/24/1991US5051051 Rack and die mover
09/20/1991CA2037620A1 Variable geometry tube bending dies
09/18/1991EP0446851A1 Mold for forming composite-material structures
09/18/1991EP0446536A1 Device for retaining press tool elements in their holder
09/04/1991CN1054206A Method and apparatus for forming, reforming and curling shells in single press
08/1991
08/27/1991US5042352 Quick change tool holder
08/22/1991WO1991012099A1 Die for beading metallic gasket
08/20/1991US5040404 Die changing system and apparatus for stamping presses
08/20/1991US5040403 Method of changing stamping die sets
08/20/1991CA1287793C Stamping system
08/14/1991CN1053762A Method and device for forming a sheet-metal blank, in particular in order to make a cathode ray tube mask, and cathode ray tube mask obtained according to this method
08/13/1991US5039469 Method of making plastic tooling with compression adjustment
08/13/1991US5038599 Ball lock punch retainer