| Patents for B21K 1 - Making machine elements (7,621) |
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| 01/30/1990 | US4897004 Blind fastener with self-locking collar |
| 01/30/1990 | US4896551 Starter motor and process of forming pinion shaft used in the starter motor |
| 01/24/1990 | EP0351702A2 Blind fastener |
| 01/11/1990 | DE3824033C1 Method for the production of notched pins and an apparatus for carrying out the method |
| 01/08/1990 | EP0353231A4 Process and apparatus for forging one piece track roller rim. |
| 01/03/1990 | EP0348798A1 Method of making a valve sleeve |
| 01/03/1990 | CN1038417A High-strength screw bolt with pressed key groove and the manufacturing method thereof |
| 12/19/1989 | US4887449 Method for forming a piston having a peg |
| 12/12/1989 | US4885927 Method and apparatus for press forming intricate metallic shapes such as spool valve elements |
| 12/07/1989 | DE3817851A1 Apparatus for notching pins or needles or rivets |
| 11/29/1989 | EP0344117A2 Method and apparatus for rolling grooves in tool shanks |
| 11/28/1989 | US4882925 Method of making terminal nut for ignition plug by plastic working |
| 11/23/1989 | DE3816090A1 Verfahren zur herstellung von metallenen hohlprofilen und einrichtung fuer die durchfuehrung des verfahrens Process for the manufacture of metallic hollow profiles and device for carrying out the method |
| 11/21/1989 | US4881763 Fuel injection line with compression nipple formed thereon by upsetting and process for the production thereof |
| 11/21/1989 | US4881395 Process and apparatus for fabricating stepped nails |
| 11/16/1989 | WO1989010805A1 Improvements in machines and methods for making star-shaped fasteners |
| 11/14/1989 | US4879953 Bullet |
| 11/07/1989 | US4878370 Cold extrusion process for internal helical gear teeth |
| 11/02/1989 | EP0340128A1 Camshaft assembling method and camshaft obtained |
| 11/01/1989 | CN1036719A Brazing process for bicycle frame |
| 10/31/1989 | US4876876 Dies for forging gear-shaped part made of sheet metal |
| 10/19/1989 | DE3911441A1 Verfahren zur herstellung eines halbgeteilten lagers A process for producing a semi-split bearing |
| 10/11/1989 | EP0336783A2 Producing a thread on a tube |
| 10/10/1989 | US4872250 Method for fabricating a dished hollow body possessing a linear or helical inner toothing |
| 10/10/1989 | CA1262236A1 Transition pieces |
| 10/04/1989 | EP0334872A1 Loading a segmented die and ejecting a component formed therein |
| 10/04/1989 | CN1035975A Manufacturing method of bicycle flywheel |
| 10/03/1989 | US4870853 Tool and method of coining corner breaks in a stator of a power steering valve |
| 10/03/1989 | US4870845 Working apparatus for crankshaft |
| 09/26/1989 | US4869629 Blind fastener |
| 09/26/1989 | CA1260414A1 Integral joint forming of work-hardenable high alloy tubing |
| 09/19/1989 | US4866970 Apparatus for the continuous shearing off and cold swaging of metal workpieces |
| 09/12/1989 | CA1259209A1 Eye bolt and method of manufacture |
| 09/05/1989 | US4862571 Method of making a valve sleeve |
| 08/30/1989 | EP0110918B1 Method and apparatus for making steering rack bars |
| 08/29/1989 | US4860567 Ring forging process |
| 08/15/1989 | US4856824 Method of manufacture of manifolds and manifold provided by such method |
| 08/15/1989 | US4856167 Method for producing near net ring gear forgings |
| 08/15/1989 | US4856160 Bullet with reverse taper interlock jacket and method of manufacturing the bullet |
| 08/03/1989 | DE3801104A1 Method for the production of a light-alloy wheel |
| 07/26/1989 | CN1034155A Method of machining oblong workpiece and machine for performing method |
| 07/18/1989 | US4847968 Forging method for producing a pulley |
| 07/12/1989 | EP0323931A1 Method and tooling equipment for making forged rivets |
| 07/06/1989 | DE3843348A1 Synchronising ring and an apparatus and method for the production of the said ring |
| 07/05/1989 | EP0322770A2 Method and apparatus for plastically forming helical internal gears and helical gears |
| 07/04/1989 | US4843864 Press tooling for manufacturing constant velocity ratio universal joint members |
| 07/04/1989 | US4843856 Method of forging dual alloy billets |
| 07/04/1989 | US4843698 Process for the production of a cast piston upper part of a two-part piston |
| 06/28/1989 | EP0321880A2 Method and apparatus for forging toothed wheels |
| 06/20/1989 | US4839952 Process for manufacturing toothed parts |
| 06/13/1989 | US4838069 Apparatus for fabricating integrally bladed rotors |
| 06/13/1989 | US4838062 Process for upset forging of long stands of metal bar stock |
| 06/07/1989 | CN2039077U Shape-correction device for protecting ring of a hydraulically intensified generator |
| 06/06/1989 | US4836730 Fastener |
| 06/06/1989 | US4835856 Piston ring manufacturing method |
| 06/06/1989 | US4835805 Production of threaded metal rods for making U-bolts |
| 05/30/1989 | US4833906 Machine for making star-shaped fasteners |
| 05/16/1989 | US4829950 Lightweight, high strength, wear resistant |
| 05/05/1989 | WO1989003735A1 A method of machining an oblong workpiece and a machine for performing the method |
| 05/05/1989 | WO1989003734A1 A tool ring, a method of making it, and a holding tool for use in the performance of the method |
| 05/03/1989 | EP0313985A2 Method of making a camshaft |
| 05/02/1989 | US4826376 Lock nut and method for making same |
| 05/02/1989 | US4825522 Method of making heat resistant heavy-duty components of a turbine by superplasticity forging wherein different alloys are junctioned |
| 04/25/1989 | CA1252989A1 Method of manufacturing bicycling chain drives |
| 04/18/1989 | US4821412 Method of producting an electric contact |
| 04/13/1989 | DE3833355A1 Method for the hot forming of used sleeper bolts and apparatus for carrying out the method |
| 04/05/1989 | EP0309747A2 Method and device for manufacturing a light-metal vehicle wheel |
| 03/29/1989 | EP0308908A1 Method of making a second article, which is highly precise positionable to a first article |
| 03/29/1989 | CN1031952A Rolled forging formating technology for front axle of automobile |
| 03/28/1989 | US4816346 Screw fastener blank |
| 03/14/1989 | US4812095 Threaded fastener |
| 02/22/1989 | EP0303634A1 Fixing device and method for the manufacture of same |
| 02/21/1989 | US4805437 Method and apparatus for producing fasteners having wrenching sockets therein |
| 02/09/1989 | DE3742717C1 Method of manufacturing a motor-vehicle axle |
| 01/31/1989 | US4800746 Machine and method for making star shaped fasteners |
| 01/31/1989 | US4800745 Spur gear automatic production process |
| 01/31/1989 | US4800634 Method of manufacturing a bicycle hub sleeve |
| 01/31/1989 | CA1249458A1 Forging process |
| 01/24/1989 | US4799303 Method of making a valve sleeve |
| 01/24/1989 | CA1249141A1 Self-drilling screw and method and means for manufacturing same |
| 01/17/1989 | USRE32830 Method of forming a precision ball track |
| 01/17/1989 | US4798077 Method for producing a family of forged ring rolling preforms and forging die therefor |
| 01/17/1989 | US4797986 Spur gear manufacturing process |
| 01/11/1989 | EP0298457A2 Full enclosed die forging apparatus |
| 01/11/1989 | EP0298456A2 Full enclosed die forging apparatus |
| 01/11/1989 | EP0298455A2 Full enclosed die forging apparatus |
| 01/10/1989 | US4796799 Method for making sucker rods |
| 01/03/1989 | US4794812 Gear-shift lever having variable thickness walls |
| 12/29/1988 | DE3718884A1 Method and tools for the cold, warm and hot transversal extrusion of workpieces with accurate teeth from metal, preferably steel |
| 12/28/1988 | CN88100946A Method for producing near net ring gear forgings |
| 12/28/1988 | CA1247339A Means for manufacturing components of rotary valves |
| 12/27/1988 | US4793037 Method of making a bullet |
| 12/13/1988 | CA1246330A1 Blade twisting apparatus |
| 11/29/1988 | CA1245405A1 Pin-type fasteners |
| 11/22/1988 | CA1245083A1 Nail-type fastener, and process for manufacturing such fasteners |
| 11/22/1988 | CA1245042A1 Tool for and method of making hollow articles |
| 11/08/1988 | US4782679 Process for the production of flanges or collars on hollow parts by lateral extrusion |
| 11/03/1988 | WO1988005991A3 Fixing device and method for the manufacture of same |
| 11/03/1988 | DE3713160A1 Cold-extrusion pressing tool for the production of teeth on a workpiece, especially a rack, made of a high-strength material |
| 11/02/1988 | CN88101511A Method for manufacturing disc used to make clutch rotor for electromagnetic clutch |