| Patents for B21K 1 - Making machine elements (7,621) |
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| 11/09/1993 | US5259320 Intermediate article used to form a bullet projectile or component and a finally formed bullet |
| 11/04/1993 | DE4213226A1 Flat jet nozzle, esp. high pressure jet nozzle - has shaped recesses in wall of pocket bore, to generate part jets directed towards each other |
| 11/02/1993 | US5257453 Process for making exhaust valves |
| 10/27/1993 | CN1077667A Coupling for shoulder ended pipes |
| 10/21/1993 | DE4307092A1 Wheel nut with integral flange - has concave flange face and is solid-shaped, e.g. by cold or hot-pressing and has clamping portion with tapering bore and slots |
| 10/21/1993 | DE4307091A1 Wheel nut with polygonal portion for spanner - has pressure plate solid-shaped by cold or hot-pressing and with concave face towards wheel |
| 10/21/1993 | DE4307090A1 Solid pressed wheel nut with bearing plate - has inner cone face and slots in clamping portion formed by pressing and inner thread formed by non-cutting process |
| 10/14/1993 | WO1993020003A1 Bobbin body and process for producing the same |
| 10/13/1993 | EP0565114A1 Method for obtaining a valve body and valve body obtained through said method |
| 10/12/1993 | US5251585 Rocker arm |
| 10/07/1993 | DE4211172A1 Spulenkörper und Verfahren zu dessen Herstellung Bobbin and process for its preparation |
| 10/07/1993 | DE4210340A1 Process for production of safety nut - involves cutting slit which extends 300 deg. around nut circumference and is opened to create spring arm binding on bolt thread |
| 10/06/1993 | EP0564197A1 Production of pipe couplings |
| 09/21/1993 | US5245851 Differential pinion, metal mold for plastic working the same, and method for plastic working with the metal mold |
| 09/21/1993 | US5245850 Process of producing an outer joint part |
| 09/16/1993 | WO1993017813A1 A method and an apparatus for making screws, rivets or similar objects |
| 09/16/1993 | WO1993017811A1 A machine for forming objects |
| 09/16/1993 | WO1993017810A1 A method and an apparatus for making screws, rivets or similar objects |
| 09/16/1993 | WO1993017809A1 A method and an apparatus for making an elongate object |
| 09/16/1993 | WO1993017808A1 A method and an apparatus for making a head on an elongate blank |
| 09/15/1993 | EP0560010A1 Plastic working method for a holed member |
| 09/13/1993 | CA2088019A1 Plastic working method for a holed member |
| 09/08/1993 | EP0558815A1 Device for producing a hollow workpiece, profiled, at least internally, in a straight or oblique direction with respect to the workpiece-axis, and its use |
| 09/08/1993 | CN2141746Y Screw rolling machine |
| 09/07/1993 | US5241848 Light weight drive shaft |
| 09/07/1993 | CA1321872C Method for manufacturing a single-piece type valve sleeve |
| 08/25/1993 | EP0556890A1 Process of manufacturing a stamped ball joint housing with perimeter flange |
| 08/24/1993 | US5237745 Method of and apparatus for manufacturing drive plate |
| 08/19/1993 | DE4302781A1 Lever to actuate valves in IC engines - has central round passage in pivot direction, and H- shaped sections on either side |
| 08/19/1993 | DE4204213A1 Production of balls by upsetting lengths of wire - involves tools which use compressed air to withdraw tool at end of working stroke |
| 08/11/1993 | CN1021776C Cold molding reinforcing process for low-carbon manganese niobium steel fastening parts |
| 07/27/1993 | US5230134 Method of making a petal rod |
| 07/22/1993 | WO1993013891A1 Method of forming material made of sheet metal into boss part and method of forming sheet metal into pulley |
| 07/21/1993 | EP0552021A1 Gear product |
| 07/20/1993 | US5228818 Fastener system for male and female threaded members |
| 07/15/1993 | DE3744890C2 Locating of workpiece and pallet on machine tool |
| 06/30/1993 | EP0353231B1 Process and apparatus for forging one piece track roller rim |
| 06/17/1993 | DE4140720A1 Mfg.pinions of eccentric epicyclic drive and associated rims - uses first stage to form central sections,and second stage to press teeth |
| 06/16/1993 | EP0546609A1 Integrated ball joint |
| 06/15/1993 | US5219176 For heavy commercial vehicles |
| 06/15/1993 | US5218763 Method for manufacturing a swaged piston assembly for an automotive air conditioning compressor |
| 06/15/1993 | CA1318990C Process for cold pressing a conical external thread |
| 06/11/1993 | CA2077200A1 Integrated ball joint |
| 06/10/1993 | WO1993011366A1 Method of manufacturing a crankshaft |
| 06/08/1993 | US5216912 Steering shaft and manufacturing method therefor |
| 06/03/1993 | DE4220625C1 Rods, pipes, shaped pieces etc. - have surface depressions applied, esp. by ball blasting which are filled with lubricant prior to cold-drawing |
| 06/02/1993 | EP0544639A1 Isolating plate to be driven into masonry walls and process and apparatus for its manufacture |
| 05/27/1993 | WO1993009896A1 Non-cutting tool for producing inner and outer profiles |
| 05/27/1993 | DE4138126A1 Non-cutting tool to shape workpieces - has tool elements inserted into workpiece, and engaged by expander in radial direction, pressing elements against workpieces, forming threads |
| 05/26/1993 | CN1072360A Wasteless stamping method |
| 05/25/1993 | US5213250 Method for forming a lightweight flanged axle shaft |
| 05/19/1993 | DE4137539A1 Forming spiral grooves on internal conical surface - uses embossing punch,sliding axially and rotating about surface axis |
| 05/18/1993 | US5211048 Method of forming shaped configuration at end of long element |
| 05/05/1993 | CN1071610A Washer making method |
| 04/27/1993 | US5205464 Method for forming a lightweight flanged axle shaft |
| 04/21/1993 | EP0537824A2 Ultrasonic insert stud and method of assembly |
| 04/20/1993 | US5203742 Punch for making such screw heads with slant rib |
| 04/17/1993 | CA2079651A1 Ultrasonic insert stud and method of assembly |
| 04/14/1993 | EP0537034A1 Method of manufacturing a washer |
| 04/13/1993 | US5201686 Process and apparatus for producing a lock nut |
| 04/13/1993 | CA1315916C Method of machining an oblong workpiece and a machine for performing the method |
| 04/07/1993 | EP0535193A1 Method of manufacturing an unthreaded cylindrical shaft section on a fastener bolt or fastener element, and a drop-forging unit for carrying out the method. |
| 04/06/1993 | US5199837 Ultrasonic insert stud and method of assembly |
| 04/06/1993 | US5199751 Pressure hose coupling collar and method for producing same |
| 03/31/1993 | EP0534818A1 Method of producing an axle with profiled ends, machine for carrying out the method and axles thus obtained |
| 03/31/1993 | EP0414670B1 A tool ring, a method of making it, and a holding tool for use in the performance of the method |
| 03/24/1993 | EP0533322A1 Method for forming hollow articles |
| 03/24/1993 | EP0382773B1 A method of machining an oblong workpiece and a machine for performing the method |
| 03/18/1993 | DE4207378A1 Forming tool with ring-shaped bottom die - has hydraulically movable servo element to apply external pressure to die for elastic deformation |
| 03/18/1993 | DE4130557A1 Lenkwelle und verfahren zu deren herstellung Steering shaft and methods for their preparation |
| 03/10/1993 | EP0530436A1 Twist-forming press for crank shaft or the like |
| 03/03/1993 | EP0529476A1 Rollerbearing for building structures and process for its manufacture |
| 02/24/1993 | CN1069322A Screw head with slant rib and punch for making such screw heads |
| 02/18/1993 | WO1993003284A1 Screw head with slant rib and punch for making such screw heads |
| 02/16/1993 | US5186688 Cold working, passivation, aging |
| 02/16/1993 | US5186082 Ironing punch for making socket of ball-and-socket joint and method of manufacturing such ironing punch |
| 02/10/1993 | CN1068762A Technology for upsetting and shaping of coupler of hollow pumping rod |
| 02/09/1993 | US5184494 Method of forming universal joint housings |
| 02/04/1993 | WO1993001908A1 Method of forming universal joint housings |
| 02/04/1993 | CA2113616A1 Method of forming universal joint housings |
| 02/03/1993 | EP0526174A1 Process for making exhaust valves |
| 02/03/1993 | EP0526046A2 Composite poppet valve and method for manufacturing same |
| 01/27/1993 | EP0524815A1 Apparatus for forging a large caliber ring |
| 01/12/1993 | US5177991 Method of and apparatus for coining tapers at opposite ends of a sleeve member |
| 01/07/1993 | DE4122158A1 Production of hollow rivets from wire - has tool which forms rivet bore and rivet head in one operation, using mandrel arrangement |
| 01/07/1993 | DE4121943A1 Production of fork-ends by flow pressing - uses die with mandrel mounted parallel to axis of die body |
| 12/30/1992 | EP0520064A1 Method and apparatus for cold extruding universal seal crosspieces |
| 12/29/1992 | US5174147 Method and apparatus for cold extruding universal seal crosspieces |
| 12/29/1992 | US5174025 Method of manufacturing a hub for a spindle motor |
| 12/29/1992 | CA1311995C Production of threaded metal rods for making u-bolts |
| 12/24/1992 | DE4208019A1 Blanks prodn. for rotationally symmetrical components - using ring to prevent diametral expansion of blank |
| 12/23/1992 | WO1992022752A1 Fastener system |
| 12/23/1992 | CA2111095A1 Fastener system |
| 12/15/1992 | US5171186 Method of manufacture of a long point drill screw |
| 12/15/1992 | US5170655 Method for forming hollow articles |
| 12/15/1992 | CA1311379C Blind fastener |
| 12/10/1992 | DE4118113A1 Reworking/conversion method for horn hook head bolts - bolt is shortened and given space in head, to provide material for square neck |
| 12/08/1992 | CA1311167C Fuel injection line with compression nipple formed thereon by upsetting and process for the production thereof |
| 12/01/1992 | US5167585 Blind riveting assembly |
| 11/26/1992 | WO1992020475A1 Precision forming apparatus, method and article |