| Patents for B23F 15 - Methods or machines for making gear wheels of special kinds, not covered by groups (448) |
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| 07/22/1997 | US5649815 Hydraulic machine and method of producing the contour of a gearwheel of a hydraulic machine |
| 05/07/1997 | EP0682586B1 Tool for manufacturing crown wheels |
| 04/22/1997 | US5622459 Tool for manufacturing crown wheels |
| 01/21/1997 | US5595287 Spring drive for a switching apparatus |
| 10/16/1996 | EP0737540A1 Method for making transmission parts with special teeth, in particular synchronisation teeth |
| 10/08/1996 | US5562372 Method and a machine for manufacturing gears |
| 08/13/1996 | US5545871 Method of making a modified elliptical gear |
| 06/25/1996 | US5529446 Method of milling at least a localized region of a workpiece |
| 06/13/1996 | WO1996017708A1 Hob cutter for machining face gears, and method for manufacturing such a tool |
| 06/04/1996 | US5522278 Self-locking dual worm gear and the tools needed to produce it |
| 05/02/1996 | WO1996012585A1 Gear transmission of a cylindrical pinion with a face gear, face gear used in said gear transmission, and method and tool for making the face gear |
| 03/20/1996 | CN1031357C Method of working scroll member of scroll compressor |
| 03/06/1996 | EP0699114A1 Tool for producing a crown wheel which can mesh with a pinion with oblique teeth, and method of producing such a crown wheel |
| 02/27/1996 | US5494475 Tool for producing crown wheels, and method for producing such a tool |
| 01/24/1996 | EP0693016A1 Method of producing a crown wheel |
| 12/13/1995 | CN2214860Y Device of making flexible gear tooth |
| 11/22/1995 | EP0682586A1 Tool for manufacturing crown wheels. |
| 09/20/1995 | EP0672847A1 Modified elliptical gear and method for making the same |
| 08/30/1995 | EP0669186A1 Procedure for milling a particular part of a workpiece |
| 07/19/1995 | EP0663256A1 A method and a machine for manufacturing crown or face gears |
| 07/12/1995 | EP0566637B1 Method for crown gear grinding by generation |
| 07/12/1995 | CA2139695A1 Modified elliptical gear and method for making the same |
| 06/01/1995 | WO1995014547A1 Method of machining cylindrical toothed wheels |
| 05/03/1995 | EP0651409A1 Spring drive for switchgear |
| 05/02/1995 | US5411431 Method for crown gear grinding by generation |
| 04/06/1995 | DE4434804A1 Transmission gear arrangement which angularly deflects the flux of force, method for the production of such a transmission gear arrangement and tool for carrying out the said method |
| 03/08/1995 | CN1099680A Tooth face working method for speed rate changeable gear and expansion mechanism |
| 02/22/1995 | EP0639731A1 Self-locking twin screw transmission and tool for its manufacture |
| 12/22/1994 | WO1994029058A1 Process and device for cutting and chamfering teeth flanks |
| 11/24/1994 | WO1994026452A1 Tool for producing a crown wheel which can mesh with a pinion with oblique teeth, and method of producing such a crown wheel |
| 10/27/1994 | WO1994023880A1 Method of producing a crown wheel |
| 10/19/1994 | EP0559798B1 Tool for producing crown wheels, and method for producing such a tool |
| 10/13/1994 | WO1994023207A1 Hydraulic machine and method of producing the contour of a gearwheel of a hydraulic machine |
| 08/18/1994 | WO1994017945A1 Tool for manufacturing crown wheels |
| 08/17/1994 | EP0610705A1 Combined grinding machine for internal spline |
| 08/03/1994 | EP0608479A2 Method and device for making gear teeth |
| 08/03/1994 | CN2173128Y Automatic machine for making gear teeth |
| 08/02/1994 | US5334002 Gerotor pump with shiftable rotor boss |
| 05/24/1994 | US5314317 Method of working scroll member of scroll compressor |
| 04/13/1994 | CN1024172C Gear grinding installation |
| 03/02/1994 | CN1083189A Cylindrical gearing pair with curved tooth face, processing method and equipment |
| 03/02/1994 | CN1083181A Method of working scroll member of scroll compressor |
| 02/22/1994 | US5288179 Hob for generating face gears |
| 02/02/1994 | EP0580801A1 Method of cutting hour glass screws |
| 12/29/1993 | CN2150970Y Grinding machine for internal hole of spline |
| 12/22/1993 | EP0494221B1 Hob for generating face gears |
| 12/02/1993 | DE4315752A1 Tooth profile machining for sprockets of roller chains - uses cylindrical tools for machining teeth of sprocket rotatable about its rotary axis |
| 10/27/1993 | EP0566637A1 Method for crown gear grinding by generation. |
| 10/13/1993 | EP0565225A1 Method of cold-forming toothed wheels |
| 10/13/1993 | CN1077149A Shaving and honing principle for elliptic gear and machine tool thereof |
| 09/15/1993 | EP0559798A1 Tool for producing crown wheels, and method for producing such a tool. |
| 08/24/1993 | US5237744 Method of cold-forming toothed wheels |
| 04/29/1993 | WO1993007984A1 Fly-cutter with a deburring wheel |
| 04/22/1993 | DE4134441A1 Schlagmesser-fraesmaschine mit entgratungsrad Fly-cutter milling machine with entgratungsrad |
| 02/11/1993 | DE4126934A1 Fly-cutter-type spline-generating milling machine - has cutters around periphery of magazine disk which can be indexed to bring new cutter into working position |
| 01/07/1993 | EP0521235A2 Method and apparatus for machining scroll wraps |
| 12/25/1992 | CA2059694A1 Method and apparatus for machining scroll wraps |
| 12/15/1992 | CA1311456C Rotary scroll machine with radial clearance control and method of manufacturing |
| 11/03/1992 | US5159741 Machine for the machining of metal |
| 10/29/1992 | WO1992018279A1 Method for finishing hardened crown wheels |
| 10/29/1992 | WO1992018278A1 Method of cutting hour glass screws |
| 09/16/1992 | EP0503020A1 Process for the manufacture of round workpieces with tooth-like projections, in particular gearwheels |
| 07/23/1992 | WO1992011967A1 Method for crown gear grinding by generation |
| 06/30/1992 | US5125379 Rotary engine |
| 06/25/1992 | WO1992010322A1 Method of making intermeshing rotors or precision gears, whereby a patterned flank is machined by a rotor-shaped tool, and rotors or gears made by this method |
| 05/30/1992 | WO1992009395A1 Tool for producing crown wheels, and method for producing such a tool |
| 05/30/1992 | CA2096024A1 Tool for producing crown wheels, and method for producing such a tool |
| 05/29/1992 | WO1992008895A1 Gerotor pumps |
| 05/29/1992 | CA2095133A1 Gerotor pumps |
| 05/20/1992 | EP0486164A1 Gerotor pumps |
| 04/14/1992 | US5103558 Method and apparatus for machining scroll wraps |
| 04/02/1992 | WO1992005004A1 Process for the manufacture of round workpieces with tooth-like projections, in particular gearwheels |
| 03/26/1992 | DE4029671A1 Verfahren zur herstellung von runden werkstuecken mit stegfoermigen vorspruengen, insbesondere zur herstellung von zahnraedern Process for the preparation of round workpieces with stegfoermigen projections, in particular for the production of gear wheels |
| 02/04/1992 | US5084965 Process to cut hour glass screws |
| 10/30/1991 | EP0453875A1 Machine for metal cutting |
| 06/11/1991 | US5022802 System for generating a tooth profile used in a differential speed reduction apparatus |
| 03/29/1991 | WO1991004819A1 Hob for generating face gears |
| 10/30/1990 | US4966573 Differential speed reduction apparatus and double-toothed gear for use therein |
| 09/04/1990 | US4954028 Process for making, finishing crown wheels |
| 08/08/1990 | CN1009065B Equipment for grinding stone dresser for maching the cycloidal gear |
| 07/17/1990 | CA1271604A2 Apparatus and method for machining an enveloping-type worm screw |
| 01/16/1990 | US4893971 For making the scroll parts for supporting a workpiece |
| 09/13/1989 | EP0332450A2 Double-toothed gear, system for generating its tooth profiles and differential speed reduction apparatus using it |
| 08/30/1989 | EP0330289A1 A process for the making and/or finishing of crown wheels |
| 07/12/1989 | EP0323868A1 Process for producing a crown wheel |
| 05/30/1989 | US4834633 Scroll machine with wraps of different thicknesses |
| 05/02/1989 | US4826369 Apparatus for machining splines on a tubular member |
| 01/25/1989 | CN1030542A Gear grinding installation |
| 07/21/1988 | DE3700442A1 Verfahren zum materialabtragenden bearbeiten von werkstueckrohlingen zur herstellung von spiralverdichter-schaufeln A method for material-edit of werkstueckrohlingen for manufacturing spiral compressor-shovel |
| 07/14/1988 | WO1988004973A1 Stock-removal machining process for workpiece blanks used in the manufacture of spiral compressor blades of intake air compressors of motor vehicles |
| 05/19/1988 | WO1988003450A1 Method of producing rack-and-pinion steering arrangements with a variable gear ratio |
| 05/18/1988 | EP0267399A1 Method of producing rack-and-pinion steering arrangements with a variable gear ratio |
| 04/14/1988 | DE3633656A1 Annular screw mechanism |
| 03/15/1988 | US4730963 Broaching machine for external broaching of rotor |
| 02/23/1988 | US4726100 Method of manufacturing a rotary scroll machine with radial clearance control |
| 12/30/1987 | CN86100596A A grinding equipment of the grinding stone dresser for machining the cycloidal gear |
| 12/01/1987 | US4710076 Method for cutting complex tooth profiles in a cylindrical, single-screw gate-rotor |
| 10/27/1987 | US4702126 Axial gear train having syncline face cycloid gearing |
| 10/22/1987 | DE3612048A1 Method for producing toothed-rack steering systems with different transmission ratios |
| 09/15/1987 | US4692989 Process and apparatus for profiling rod-like workpieces |