| Patents for B21H 1 - Making articles shaped as bodies of revolution (2,244) |
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| 04/11/1990 | EP0362502A2 Method for sizing the cross-section of a work piece by reduction during its rotation |
| 04/03/1990 | US4913689 Pulley with a high-friction groove surface and manufacturing method therefor |
| 04/03/1990 | CA1267326A1 Method and apparatus for edge preparation of spinning blanks |
| 03/27/1990 | US4910921 Rolling edge punch assembly |
| 03/20/1990 | US4909056 Method and an apparatus for cold-roll forming of annular workpieces |
| 03/06/1990 | US4905361 Method for manufacturing pulley with a high-friction groove surface |
| 02/27/1990 | CA1266155A2 Production of bodies of revolution having at least one groove |
| 02/06/1990 | CA1265320A1 Hermetic terminal assembly pin and method and apparatus for making the same |
| 01/30/1990 | CA1264967A1 Poly v-pulley |
| 01/25/1990 | DE3824856A1 Apparatus for ring forming |
| 01/23/1990 | CA1264507A1 Method of producing bodies of revolution |
| 01/16/1990 | US4893492 Roll forging machine and method |
| 10/17/1989 | US4874353 Grooved pulley and manufacturing method therefor |
| 09/26/1989 | US4869088 Ring shaping apparatus |
| 09/26/1989 | CA1260414A1 Integral joint forming of work-hardenable high alloy tubing |
| 09/13/1989 | CN1035452A Method for machining shaft |
| 09/06/1989 | EP0331368A1 Manufacturing electrical pins |
| 08/31/1989 | DE3806025A1 Apparatus for the pretreatment of round blanks |
| 08/30/1989 | EP0329925A2 Device for manufacturing work pieces such as pulleys with multiple V-profiles, or the like |
| 08/30/1989 | CN1035067A Forming method and device for roll-expanding by planet roll |
| 07/05/1989 | CN1004724B Rolled-welded pulley and its producing method |
| 07/04/1989 | US4843694 Method of making a clutch rotor for an electromagnetic clutch |
| 06/28/1989 | CN2040013U Automatic assembling machine for bearing ring |
| 06/21/1989 | CN2039607U Mould frequent rotation type auto-sealing bottom machine |
| 06/15/1989 | WO1989005203A1 Device for shaping a rotationally symmetrical sheet metal object, for example a pulley blank |
| 06/15/1989 | DE3741006A1 Wheel body-shaping device |
| 06/14/1989 | EP0319979A1 Apparatus for working hollow sheet metal objects, e.g. a pulley blank |
| 06/14/1989 | EP0319842A1 Method of producing a bearing |
| 05/30/1989 | CA1254769A1 Method for producing a multiple v-groove pulley and a pulley produced by said method |
| 05/02/1989 | US4825675 Top roll exchanging apparatus for a wheel rim forming machine |
| 04/26/1989 | CN2036458U Cantilever ball cold-roolling mill |
| 04/25/1989 | US4823581 Bearing wheel body forming apparatus |
| 04/25/1989 | US4823580 Wheel-body forming apparatus |
| 04/18/1989 | US4821388 Method for processing a nut seat on a wheel |
| 04/04/1989 | US4817408 Method and machine for fabricating rotation bodies by plastic deformation |
| 04/04/1989 | CA1251962A1 Threaded fastener having minimized length and weight and method to make it |
| 03/14/1989 | US4811585 Device for forming asymmetrical articles by rolling |
| 01/25/1989 | CN2031321U Drawing device with bottom cylinder |
| 01/18/1989 | EP0198860B1 Method and machine for fabricating rotation bodies by plastic deformation |
| 01/17/1989 | US4798077 Method for producing a family of forged ring rolling preforms and forging die therefor |
| 01/12/1989 | DE3820932A1 Method and apparatus for manufacturing multi-grooved pulleys, as well as a multi-grooved pulley manufactured according to this method |
| 01/10/1989 | US4796462 Workpiece bite device in a rolling flat cutter |
| 12/27/1988 | US4793169 Continuous backpass rolling mill |
| 12/20/1988 | CA1246841A1 Wheel disc-to-rim assembly |
| 12/06/1988 | US4789380 Clutch rotor for an electromagnetic clutch and method of production thereof |
| 11/30/1988 | CN87101564A Rolled-welded pulley and its producing method |
| 11/23/1988 | EP0291714A2 Method and device for the manufacture of rotating objects by flow conversion |
| 11/22/1988 | US4785647 Method and apparatus for sizing rings |
| 11/08/1988 | US4782682 Rolling Mill Tool |
| 11/08/1988 | US4782680 A method for milling |
| 11/02/1988 | CN88101904A Method and apparatus for cold-roll forming of annular workpieces |
| 10/12/1988 | EP0286587A2 Profiling method for ring-shaped objects, and apparatus for carrying out this method |
| 08/30/1988 | US4767387 Grooved pulley and manufacturing method therefor |
| 08/30/1988 | US4766752 Machine tool for the production of tubular components |
| 08/17/1988 | EP0278306A2 Method for producing a family of forged ring rolling preforms and forging die therefor |
| 07/19/1988 | US4757701 Six stage rolling apparatus for forming endless metal belts |
| 06/07/1988 | US4749375 Method for producing a multiple V-groove pulley and a pulley produced by said method |
| 05/31/1988 | US4747431 Integral joint forming of work-hardenable high alloy tubing |
| 04/26/1988 | US4739551 Hermetic terminal assembly pin and method and apparatus for making the same |
| 04/07/1988 | DE3632436A1 Radial/axial ring rolling machine |
| 03/24/1988 | WO1988001917A1 Forging process free from decarburization and oxidation in atmospheric working of metallic parts |
| 02/02/1988 | US4722211 Method of forming hollow parts |
| 01/27/1988 | EP0253908A1 Burnishing tool |
| 01/27/1988 | EP0253907A1 Forming method for crank journals having cross holes |
| 01/27/1988 | CN87104894A Hermetic terminal assembly pin and method and apparatus for mfg. same |
| 01/26/1988 | US4720988 Method for the profiling cold-rolling of rings with tangential expansion |
| 01/20/1988 | EP0253753A2 Method and apparatus for making a pin for hermetic terminal assemblies |
| 01/20/1988 | CN87104795A Clutch rotor for electromagnetic clutch and method for producing thereof |
| 01/20/1988 | CN86108713A Multi-point radial milling ring technological process |
| 12/08/1987 | US4711387 Method of producing pipes with crack arresters |
| 10/06/1987 | US4697445 Poly-V pulley formed of sheet metal and method and apparatus for making same |
| 10/06/1987 | CA1227669A1 Method of manufacturing poly-v pulleys and the products |
| 10/06/1987 | CA1227668A1 Poly-v grooved pulley and method of making same |
| 08/25/1987 | US4688407 Method and apparatus for radial expansion of rings |
| 08/04/1987 | US4683630 Method for manufacturing an integrated wheel |
| 07/21/1987 | US4680846 Material saving method for truing track wheels |
| 06/25/1987 | DE3544964A1 Apparatus for the production of workpieces, such as multiple-groove pulleys, rims or the like |
| 06/16/1987 | US4672833 Method and apparatus for the two-step rolling of rings |
| 06/10/1987 | CN85108822A Precision roll-forming technology of bearing race |
| 05/06/1987 | CN85107711A Device for manufacturing metal buckets |
| 04/22/1987 | EP0219019A2 Apparatus for plastic cross-rolling porous sintered metallic work pieces presenting a rotational symmetry |
| 04/08/1987 | CN86201958U Rollers for base ball rolling |
| 03/31/1987 | US4653165 Method for making a poly-V grooved pulley with interior ribs |
| 03/17/1987 | US4649728 Integral joint forming of work-hardenable high alloy tubing |
| 03/10/1987 | US4648163 Method of making a poly-V ribbed pulley |
| 01/14/1987 | CN85106584A Automatic charging and discharging cross rolling mill with three wedged rollers |
| 01/06/1987 | US4633557 Method of making poly-V pulleys |
| 12/30/1986 | CA1215885A1 Machine for deep peripheral slitting of unplanar disks used to fabricate tire wheels |
| 12/10/1986 | EP0204032A2 Pulley, especially a multiple V-pulley, and method of making rotation-symmetrical objects from a material deformable without chipping |
| 11/20/1986 | EP0201619A1 Method for the rectification of a railroad wheel profile while saving material |
| 10/29/1986 | EP0199428A2 Manufacture of tubular members with at least one enlarged end |
| 10/29/1986 | EP0198860A1 Method and machine for fabricating rotation bodies by plastic deformation. |
| 10/28/1986 | US4619130 Apparatus for providing a rim on the tips of ballpoint |
| 09/23/1986 | US4612789 Making rings from tube or bar stock |
| 08/19/1986 | US4606206 Method and apparatus for edge preparation of spinning blanks |
| 08/13/1986 | EP0190958A2 Method and apparatus for edge preparation of spinning blanks |
| 06/10/1986 | CN85107691A Method and apparatus for producing bodies of revolution by plastic deformation |
| 04/24/1986 | WO1986002296A1 Method and machine for fabricating rotation bodies by plastic deformation |
| 04/10/1986 | CN85106696A Processes for light-alloy wheels |
| 02/25/1986 | US4572587 Road wheel for a track-laying vehicle |