| Patents for B21H 1 - Making articles shaped as bodies of revolution (2,244) |
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| 11/04/1993 | DE4214861A1 Rolling tool for annular workpieces avoiding edge pressure - comprises radii of curvature of concave support surfaces of exceeding radii of curvature of convex profiles of support rolls, for bearing mfr. |
| 11/04/1993 | DE4214512A1 Mfg. rotationally symmetric titanium@ alloy components shaped as tubes pots or cones - comprises cold forming by means of press roll sets |
| 10/13/1993 | EP0565406A1 Method of making a metallic ring-shaped body |
| 10/13/1993 | EP0565225A1 Method of cold-forming toothed wheels |
| 10/13/1993 | CN1022387C Ring rolling machine with two radial main rollers |
| 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 |
| 08/26/1993 | DE4205675A1 Forming hollow cylindrical bodies from the solid - using forming rolls executing a forward and backward movement |
| 08/24/1993 | US5237744 Method of cold-forming toothed wheels |
| 08/17/1993 | US5236115 Process for the manufacture of a viscous torsional vibration damper |
| 08/10/1993 | US5233857 Cutting tool for disc-shaped metal sheets |
| 08/04/1993 | EP0553876A1 Aluminum pipe production process, electrophotographic photosensitive member produced by the production process, and electrophotographic apparatus having the electrophotographic photosensitive member |
| 07/28/1993 | EP0552776A1 Rolling process for forming pulleys with one or more V-grooves and with an integral phonic wheel |
| 07/28/1993 | CN1021696C Method and apparatus for producing corrugated expanding ring of bearing |
| 07/22/1993 | WO1993013891A1 Method of forming material made of sheet metal into boss part and method of forming sheet metal into pulley |
| 06/30/1993 | CN1021473C Clutch rotor for electromagnetic clutch and method for producing thereof |
| 05/06/1993 | DE4135906A1 Rolling tool for ring-shaped workpieces - has mandrel with profiled central section and truncated cone-shaped contact faces for support rollers |
| 04/22/1993 | DE4134604A1 Rolling bearings with noise attenuation - obtained by means of an oil-filled gap in compound bearing races |
| 03/25/1993 | DE4131692A1 Cold rolling machine for rolling threads or other profiles - has fixed centre roll spindle and slide mounted roll spindle on each side of centre spindle forming two more stations |
| 01/27/1993 | EP0524815A1 Apparatus for forging a large caliber ring |
| 01/20/1993 | EP0523486A2 Flat die cross rolling mill |
| 01/07/1993 | EP0521824A1 Circular saw blade straightening machine |
| 12/10/1992 | DE4118871A1 Manufacturing method for profiled disc for oscillation damper housing - forms circumferential gap in circular body, to form projecting ring sections without re-chucking |
| 12/09/1992 | EP0517572A1 Method of making a pulley, apparatus for making the same and pulley so produced |
| 11/11/1992 | EP0512295A2 Process for the fabrication of a torsional vibration damper, in particular viscous damper |
| 11/11/1992 | CA2068256A1 Process to manufacture a torsional vibration damper, in particular a viscous torsional vibration damper, and torsional vibration damper manufactured according to this process |
| 10/21/1992 | EP0509610A1 Procedure for production of vehicle wheels |
| 10/20/1992 | CA2066285A1 Procedure for production of vehicle wheels |
| 10/15/1992 | DE4104751A1 Verfahren zur herstellung rotationssymmetrischer werkstuecke und anordnung zur durchfuehrung des verfahrens Process for the production of rotationally symmetrical workpieces and arrangement for implementing the method |
| 10/06/1992 | US5152047 Method of producing laminated metal belt |
| 09/03/1992 | WO1992014565A1 Process for the manufacture of rotationally symmetrical workpieces, and device for carrying out the process |
| 09/02/1992 | CN1018053B Wedge cross rolling process for electric step shaft |
| 08/20/1992 | WO1992013659A1 Integrally stiffened rings |
| 07/16/1992 | DE4111155C1 Upsetting roller with peripheral upsetting groove - has radially protruding, limiting bead also protruding beyond outer end of upsetting face |
| 07/08/1992 | EP0493593A1 Method of producing component parts of a fluid chamber |
| 07/01/1992 | EP0493333A1 A cutting tool for disc-shaped metal sheets |
| 06/24/1992 | CN1062105A Ring rolling machine with two radial main rollers |
| 06/23/1992 | US5123166 Ear forming method of sheet metal made of poly-v pulleys |
| 06/17/1992 | EP0490840A1 Procedure and means to realise a hub from a metal disc or similar |
| 06/13/1992 | CA2057360A1 Cutting tool for disc-shaped metal sheets |
| 06/13/1992 | CA2057182A1 Procedure and means to realise a hub from a metal disc or similar |
| 05/26/1992 | US5115655 Integrally stiffened rings |
| 05/24/1992 | WO1992009535A1 Glass spinner manufacture |
| 05/24/1992 | CA2072078A1 Glass spinner manufacture |
| 05/19/1992 | US5113584 Process for manufacturing an asymmetric pulley from a metal disk |
| 04/21/1992 | CA1298995C Method for producing a family of forged ring rolling preforms and forging die therefor |
| 03/04/1992 | CN1015696B Forming method and device for roll-expanding by planet roll |
| 02/20/1992 | WO1992002319A1 Cross-wedge rolling mill |
| 02/20/1992 | WO1992002318A1 Cross-wedge rolling mill |
| 02/18/1992 | CA1295855C Method and an apparatus for cold-roll forming of annular workpieces |
| 02/06/1992 | WO1992001523A1 Method of producing component parts of a fluid chamber |
| 02/04/1992 | US5085679 Glass spinner manufacture |
| 01/21/1992 | CA1294461C Method of making pulleys with v-shaped grooves |
| 12/12/1991 | WO1991018694A1 Automatic line for cross-wedge rolling |
| 12/12/1991 | WO1991018693A1 Process and device for deep drawing or extrusion of rotationally symmetrical workpieces |
| 12/12/1991 | DE4113297A1 Former for cylindrical workpieces by rolling - has machine with adjuster for position and stroke of slide which carries roller |
| 12/03/1991 | US5068964 Method of making poly-v grooved pulley |
| 11/21/1991 | EP0456951A1 A machine tool, in particular for the manufacturing from sheet metal, of mechanical parts such as pulleys, wheels and similar |
| 11/12/1991 | CA1291866C Method of producing wheels of light alloy |
| 10/31/1991 | DE4013238A1 Production of pulley for multiple V-belt drive - by forming grooves with contoured rollers in sequence of operations |
| 10/29/1991 | US5060497 Method of forming asymmetrical articles by rolling |
| 10/16/1991 | EP0451268A1 Spin molding apparatus |
| 10/16/1991 | EP0390828B1 Device for shaping a rotationally symmetrical sheet metal object, for example a pulley blank |
| 10/09/1991 | CN1014210B Method and apparatus for producing bodies of revolution by plastic deformation |
| 09/04/1991 | CN1013744B Precision roil-forming technology of bearing race |
| 08/28/1991 | CN1013652B Method for machining shaft |
| 07/23/1991 | CA1286616C Clutch rotor for an electromagnetic clutch and method of production thereof |
| 07/18/1991 | DE4000602A1 Prodn. of disc with hub on each side - by forming circumferential slot in bore of central hole, then spreading |
| 07/16/1991 | US5031305 Apparatus for manufacturing electrical pins |
| 07/16/1991 | US5031296 Machine tool for manufacturing pulleys or wheels |
| 06/27/1991 | DE3942175A1 Surface treatment of terminal bodies for electrochemical batteries - involves machining of heads and shanks during rotation on pins in contact with suitably shaped rollers |
| 06/26/1991 | CN1052441A Method and apparatus for producing corrugated expanding ring of bearing |
| 05/29/1991 | DE3937913C1 Radial rolling press - has rolling mandrel with roll pass defined by upper and lower mandrel plates |
| 05/22/1991 | EP0427916A2 Process for the production of torsional damper |
| 05/17/1991 | CA2029439A1 Process for the manufacture of a torsional vibration damper |
| 05/16/1991 | WO1991006384A1 Spin molding apparatus |
| 05/08/1991 | EP0425924A1 Profile rolling machine for the production of circumferentially profiled, hollow cylindrical or cup-shaped platework-pieces |
| 03/26/1991 | US5001916 Method for the calibrated cross-section reduction of a workpiece rotating during such method. |
| 03/12/1991 | US4998853 Self-drilling blind rivet and method for making same |
| 03/05/1991 | US4996859 Method and apparatus for roll forming metal |
| 01/24/1991 | WO1991000785A1 Method of forming lugs of sheet metal poly-v-groove-pulley and products obtained thereby |
| 01/10/1991 | DE3921094A1 Machining of inside and outside profiles of workpieces - by machine tool with mandrel which is guided radially and axially |
| 12/20/1990 | DE3919199A1 Verfahren zur herstellung von waelzlagerelementen A process for preparing waelzlagerelementen |
| 11/28/1990 | CN1010564B Hermetic terminal assembly pin and method and apparatus for mfg. same |
| 10/17/1990 | EP0392850A2 Method of producing laminated metal belt |
| 10/16/1990 | US4962587 Method of making a wheel rim |
| 10/10/1990 | EP0390828A1 Device for shaping a rotationally symmetrical sheet metal object, for example a pulley blank. |
| 09/26/1990 | CN2062660U Double-disk type multi-diameter sphere mill |
| 09/11/1990 | US4955133 Method of making pulleys with plural V-shaped grooves |
| 09/06/1990 | DE3906763A1 Radial-die rolling machine |
| 09/04/1990 | US4953275 Process for manufacturing alloy wheels for vehicle tires |
| 08/28/1990 | US4951490 Method for automatically controlling spinning rolls |
| 08/01/1990 | EP0380005A1 Self-drilling blind rivet and method of making same |
| 07/26/1990 | DE4001723A1 Self drilling blind rivet - is made from cylinder blank with main body and bore |
| 07/25/1990 | CA2007523A1 Self-drilling blind rivet and method for making same |
| 06/26/1990 | US4936129 Method for forming a vehicle wheel |
| 06/26/1990 | US4936124 Roll forging machine and method |
| 06/06/1990 | EP0371220A2 Radial die-rolling machine |
| 05/31/1990 | DE3840020A1 Radial die rolling machine |
| 05/23/1990 | CN2057378U Parallel double-shaft helical roller shaper for making al pellet |
| 04/17/1990 | US4916929 Method and apparatus for the production of part-circular arc elements |