| Patents for B23Q 27 - Geometrical mechanisms for the production of work of particular shapes, not fully provided for in another subclass (351) |
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| 08/26/1992 | CN1017975B Mechanism for realizing theoretical curved surface roller shape |
| 08/20/1992 | WO1992010330A3 Form drilling or turning device |
| 06/28/1992 | WO1992011965A1 Milling machine |
| 06/28/1992 | CA2076660A1 Milling machine |
| 06/17/1992 | DE4039489A1 Formbohrer Shaping Drill |
| 06/12/1992 | WO1992010330A2 Form drilling or turning device |
| 06/12/1992 | CA2075710A1 Form drilling or turning device |
| 05/27/1992 | DE4037394A1 Non-round rotary machine - produces workpieces with elliptical or other non-round cross=section, and has fixed rotary chisel free from support |
| 05/14/1992 | WO1992007684A1 Method of working polygon |
| 04/15/1992 | EP0480138A2 Device for marking curved surfaces of workpieces |
| 04/14/1992 | US5103558 Method and apparatus for machining scroll wraps |
| 03/31/1992 | US5099727 Mechanism and method for circumscribing oval shapes |
| 12/25/1991 | CN2091199U Polygon occupied pushing cutting tool |
| 11/21/1991 | DE4016012A1 Guiding device for machine wooden workpiece - has two sliding arms fastened together at fixed angle |
| 08/14/1991 | DE4004367A1 System for milling four-period sinusoidal groove - includes oscillating work table driven by two crankshafts |
| 06/11/1991 | US5022293 Method and working machine for producing surfaces of non-circular but regular cross sections |
| 05/14/1991 | US5014584 Machine and method for cutting oval shapes |
| 05/08/1991 | DE4034516A1 Method of producing pockets in circumference of rings - uses superimposed rotary motions of work and single point tool to generate cycloidal tool path |
| 04/03/1991 | EP0419834A1 Device for the cutting of a workpiece by chip removal |
| 03/24/1991 | CA2026432A1 Apparatus for slicing a workpiece |
| 02/21/1991 | WO1991001839A1 Cutting tool |
| 01/30/1991 | EP0410058A2 Machine and method for cutting oval shapes |
| 01/23/1991 | EP0409593A1 Turret-lathe machining method and apparatus therefor |
| 01/23/1991 | EP0408560A1 Process and means for automatically matching at least two substantially cylindrical surfaces, engaging each other, particularly for mechanical emboss engraving. |
| 01/22/1991 | US4986152 Curve cutting method and apparatus |
| 01/10/1991 | DE4019784A1 Machine for finish machining of oval workpieces - has workpiece motion derived from gear train with simple linear and rotational movements |
| 01/10/1991 | DE4019705A1 Machine for finish machining of oval workpieces - has workpiece motion derived from transmission consisting of simple mechanical elements |
| 01/03/1991 | DE4019704A1 Machine for boring holes of elliptical cross-section - has tool guided by two connected revolving arms |
| 12/25/1990 | US4979406 Cam with sinusoidal cam lobe surfaces |
| 10/31/1990 | EP0394523A1 Method and device for producing mantle surfaces having closed or broken shapes |
| 06/28/1990 | WO1990006856A1 Process and means for automatically matching at least two substantially cylindrical surfaces, engaging each other, particularly for mechanical emboss engraving, and engraved plates obtained with such process and means |
| 06/06/1990 | EP0236462B1 Device for manufacturing parts with an external and/or internal profile |
| 04/18/1990 | CN1007601B Multifunctional device for generating specific curve |
| 03/27/1990 | US4911043 Apparatus and method for milling a trochoidal rotor |
| 03/14/1990 | CN1040340A Additional device for machine tools |
| 02/28/1990 | EP0355332A1 Attachment for machine tools |
| 02/08/1990 | DE3826159A1 Method and machine tool for machining polygonal, curved surfaces |
| 01/16/1990 | US4893971 For making the scroll parts for supporting a workpiece |
| 11/28/1989 | US4883392 Fly-cutter milling machine |
| 11/23/1989 | DE3816674A1 Method of manufacturing a centrifugal pump impeller |
| 11/08/1989 | EP0340281A1 Orbital table for machine tools |
| 09/07/1989 | DE3831337A1 Method of manufacturing a machine consisting of two components in engagement with one another, in particular a displacement machine working according to the spiral principle |
| 08/30/1989 | EP0340281A4 Orbital table for machine tools. |
| 08/30/1989 | EP0330085A2 Method for manufacturing a machine composed of two interengaging elements, particularly a spiral-type compressor |
| 05/03/1989 | EP0313554A1 Method and working machine for producing surfaces of non-circular but regular cross-sections |
| 04/26/1989 | CN2036468U Middle-convexity working device |
| 04/20/1989 | WO1989003279A1 Orbital table for machine tools |
| 03/23/1989 | DE3730762A1 Method and apparatus for the shape cutting of an originally cylindrical workpiece |
| 02/28/1989 | CA1250456A1 Manufacture of pistons |
| 01/11/1989 | CN1030282A Design and production method for quasi-equalizing cross contour of skirt surface of piston |
| 12/14/1988 | EP0294565A1 Polygonal milling method |
| 12/13/1988 | US4790222 Apparatus for cutting various forms out of a picture frame mat or the like |
| 12/07/1988 | EP0183737B1 Installation for the manufacturing of components having an internal and/or external polygonal shape |
| 11/03/1988 | WO1988008346A1 Method and working machine for producing surfaces of non-circular but regular cross-sections |
| 11/03/1988 | DE3718295A1 Tool head for an apparatus for producing workpieces with a polygonal outer and/or inner contour |
| 10/19/1988 | EP0287490A1 Driving mechanism for at least one rotating tool on a lathe |
| 10/11/1988 | CA1242901A1 Variable orbital drive mechanism and method |
| 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 |
| 06/16/1988 | DE3347856C2 Machine for machining workpieces rotationally driven about their longitudinal axis and non-circular in cross-section |
| 04/21/1988 | WO1988002676A1 Polygon manufacturing tool |
| 02/09/1988 | CA1232657A1 Machine tools |
| 02/02/1988 | US4722123 Driving system for automatic lathes |
| 12/02/1987 | EP0247210A1 Apparatus for tooling the outline of a work piece |
| 09/30/1987 | CN86101936A Cycloidal splined coupling and cycloidal machine tool for machining the same |
| 09/15/1987 | US4694401 Apparatus for forming diverse shapes using a look-up table and an inverse transfer function |
| 09/15/1987 | US4692989 Process and apparatus for profiling rod-like workpieces |
| 08/05/1987 | CN86100832A Mechanism for realizing the theoretical curved surface roller shape |
| 08/04/1987 | US4683788 Method of and apparatus for chip-cutting of workpieces |
| 04/14/1987 | US4656788 Variable orbital drive mechanism |
| 03/26/1987 | WO1987001640A1 Device for manufacturing parts with an external and/or internal profile |
| 03/24/1987 | US4651599 Method for producing workpieces having polygonal outer and/or inner contours |
| 03/18/1987 | EP0214931A1 Drive device for an automatic turning machine |
| 03/12/1987 | DE3532558A1 Vorrichtung zum herstellen von werkstuecken mit polygonaler aussen- und/oder innenkontur Foreign- device for the manufacture of workpieces with polygonal and / or internal contour |
| 03/10/1987 | US4648295 Method for producing workpieces having polygonal outer and/or inner contours and apparatus for implementing the method |
| 03/03/1987 | US4646596 Machine tools |
| 01/31/1987 | CN86103540A New method and multifunction device for generating specific curve, surface and body |
| 01/27/1987 | US4639173 Apparatus for producing a cam with sinusoidal cam lobe surfaces |
| 01/27/1987 | US4638694 Manufacture of pistons |
| 01/07/1987 | EP0073227B1 Cutter-holder for turning polygonal surfaces |
| 01/06/1987 | US4633848 Endless saw and method for cutting annular rock bodies |
| 12/02/1986 | US4626150 Machine tool for machining workpieces by chip removal according to a quadric surface of revolution, particularly for super finishing of cylindrical surfaces |
| 10/07/1986 | US4615091 Method of and apparatus for processing a scroll member for a scroll type compressor |
| 09/23/1986 | US4612833 Machine tools |
| 06/24/1986 | CA1206420A1 Parallel cylinder internal combustion engine |
| 06/10/1986 | CA1205622A1 Revolving cutting tool |
| 04/16/1986 | EP0178072A1 Variable orbital drive mechanism |
| 02/04/1986 | US4567927 Apparatus for cutting elliptical shapes in a workpiece |
| 01/29/1986 | EP0169667A1 Improvements in or relating to honing devices |
| 01/02/1986 | EP0166589A1 Improvements in or relating to the manufacture of pistons |
| 12/19/1985 | WO1985005587A1 Installation for the manufacturing of components having an internal and/or external polygonal shape |
| 11/19/1985 | US4553885 Apparatus for the initial and improvement machining of active surface of steer cams, particularly of brake spanners |
| 10/16/1985 | EP0158608A2 A method of making annular bodies from rock material blocks, especially marble blocks, and a machine for implementing the method |
| 09/18/1985 | EP0154783A1 Oval dish forming apparatus |
| 09/17/1985 | US4541756 Revolving cutting tool |
| 09/03/1985 | US4538945 Apparatus for machining a polygon profile on a workpiece |
| 04/03/1985 | EP0135709A1 Method of manufacturing parts with polygonal outer and/or inner profiles, and devices for carrying out the method |
| 03/12/1985 | US4503693 Apparatus for making a hole and a hole-surrounding collar in the side of a pipe |
| 02/14/1985 | WO1985000545A1 Process for fabricating work-pieces with polygonal inner and/or outer profile and plants for implementing said process |
| 01/16/1985 | EP0131134A2 Form-grinding process and apparatus for the spark-erosive machining of work pieces |