| Patents for B23G 1 - Thread cutting; Automatic machines specially designed therefor (3,392) |
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| 05/12/1992 | US5112169 Thread cutting method and apparatus |
| 04/15/1992 | EP0480551A1 Screw-on acetabular prosthesis and method of manufacturing the same |
| 04/15/1992 | EP0480063A1 Controller of machine equipped with tapping function |
| 04/14/1992 | US5104268 Screw cutting machine |
| 04/10/1992 | CA2052978A1 Screwable acetabular (hip joint) cup and method of its production |
| 04/01/1992 | EP0478439A1 Machine for manufacturing ground screws starting from rods |
| 04/01/1992 | CN1059859A Special machine-tool for machining trapezoidal thread |
| 03/17/1992 | US5096343 Internal thread forming apparatus with an automatic rotational direction change controller |
| 03/10/1992 | US5093972 Use in a machine |
| 02/18/1992 | US5088244 Machining method for member included screw-shaped portion |
| 12/31/1991 | US5076744 Screw cutting machine |
| 12/24/1991 | US5074731 Radially insertable screw nut |
| 12/24/1991 | US5074176 Threading machine chuck |
| 12/04/1991 | EP0459933A2 Thread cutting machine |
| 12/04/1991 | CN2089855U Column die handle |
| 11/27/1991 | CN2089382U Threading head changeable threading machine |
| 11/27/1991 | CN2089381U Pipe threading machine |
| 11/27/1991 | CN1014873B Auxiliary device for machining space cam |
| 11/06/1991 | CN2088015U Hand wrench of processing threaded level instrument |
| 11/05/1991 | US5062744 Apparatus for confirming movement of tap when rigid tapping |
| 10/31/1991 | WO1991016163A1 Controller of machine equipped with tapping function |
| 10/29/1991 | US5061886 Apparatus for controlling movement of reciprocating member, having data display capable of indicating encoder signal indicative of the movement |
| 10/29/1991 | CA1291330C Threading machine chuck |
| 10/24/1991 | DE4029812C1 Holder for thread cutting die - has main grip with hand grips and inner ring with locking pins |
| 10/23/1991 | CN2087110U Thread cutting machine for electric wire pipe |
| 10/09/1991 | CN1014216B Method and apparatus for thread mill drilling |
| 09/17/1991 | CA1288936C Nipple chuck |
| 09/05/1991 | WO1991012917A1 Automatic thread cutting machine for nuts |
| 09/04/1991 | EP0444380A1 Threading machine chuck |
| 09/04/1991 | CN2083973U Universal tap wrench |
| 09/03/1991 | US5044842 Round screw thread machining method |
| 08/29/1991 | DE4005981A1 Precision thread cutting machine - has rotary drive spindle for workpiece ŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸ coupled to rear grinding device |
| 08/21/1991 | CN2083092U Pipe screw chasing machine |
| 08/06/1991 | CA1287237C Two speed transmission for power driven threading machine |
| 07/10/1991 | CN2080435U Special machine tool for trapezoidal thread of tow line device |
| 06/12/1991 | EP0431257A2 Numerically controlled screw cutting method for fine screw surface finishing |
| 06/05/1991 | EP0429655A1 Control device for tapping |
| 05/21/1991 | US5016335 Tapping attachment for a punch press |
| 05/15/1991 | CN2076893U Hand threading machine |
| 05/15/1991 | CN2076892U Hand tube threading machine |
| 05/14/1991 | CA1284005C Method of making a threaded insert assembly and product |
| 04/23/1991 | US5009554 Machine tool |
| 04/18/1991 | WO1991004830A1 Mainrotor machining process and apparatus |
| 04/02/1991 | US5003852 For use with a metal cutting lathe |
| 04/02/1991 | CA1282230C Spindle driver for machine tools |
| 03/27/1991 | CN2073783U Electric threading device |
| 03/26/1991 | US5002440 Apparatus for automatically stopping operation of cutting machine |
| 03/21/1991 | WO1991003349A1 Machine-tool drive |
| 03/21/1991 | DE3936060C1 Holder for screw-cutting die - incorporates springs and fixing elements integral with main body |
| 03/21/1991 | DE3930306A1 Antriebsvorrichtung fuer eine werkzeugmaschine Drive device for a machine tool |
| 03/13/1991 | CN2072877U Copying device of winding machine |
| 03/06/1991 | CN2072454U Vertical threading machine |
| 02/27/1991 | EP0413725A1 Process and machine for cutting flanks of one-piece endless screws |
| 02/13/1991 | CN2071102U Air-compressor single screw rod forming lathe |
| 01/29/1991 | US4988243 For maintaining a cutting tool |
| 01/16/1991 | EP0408492A1 Screw nut |
| 01/16/1991 | CN1048518A Cone and conical thread-cutting machine |
| 01/15/1991 | US4985841 Tapping control system |
| 01/15/1991 | US4984942 Tap wrench |
| 01/13/1991 | CA2020102A1 Screw nut |
| 01/09/1991 | CN2068876U Device for cutting conical surface and thread |
| 01/02/1991 | CN2068439U Thread processor co-operated with hand electric drill |
| 01/02/1991 | CN2068438U 万能攻丝机 Universal tapping machine |
| 01/02/1991 | CN2068437U Apparatus for working internal screw tooth of pipe |
| 01/02/1991 | CN1048181A Supplementary device for processing space cam |
| 12/26/1990 | CN2068028U Horizontal tap |
| 12/19/1990 | EP0403423A2 Thread cutting device |
| 12/19/1990 | CN2067621U Device for cutting thread rib on tube wall |
| 12/19/1990 | CN2067620U Dual-purpose tapper for conical or straight thread on reinforcing steel |
| 12/19/1990 | CN2067619U Device for conveying grub products to thread rolling by screw plate |
| 12/12/1990 | CN2067201U Multi-function thread-cutting machine |
| 12/06/1990 | DE3917454A1 Multi-cutter thread milling machine - has headstock with two or more cutters equispaced around circumference of workpiece |
| 12/05/1990 | CN2066780U Combined automatic feeding threading device |
| 12/05/1990 | CN2066779U Composite tap wrench, die-stokc |
| 11/29/1990 | WO1990014192A1 Control device for tapping |
| 11/14/1990 | CN2065525U Thread cutting machine |
| 11/13/1990 | US4969780 Method for using a die holder with centering and squaring guide to cut threads on a cylindrical workpiece |
| 11/07/1990 | CN1046691A Threading machine |
| 11/07/1990 | CN1010290B Machining process of high-precision ultrashort-pitch cycloidal screw |
| 11/06/1990 | US4968194 Tap chuck crank |
| 10/31/1990 | EP0394925A2 Tapping attachment for a punch press |
| 10/31/1990 | EP0394459A1 Device for confirming the tap operation in the rigid tapping |
| 10/31/1990 | DE3913711A1 Rapid clamping spanner for drill bit holder - has spring safety catch with leaf-spring with central protrusion in dovetail recess |
| 10/10/1990 | EP0391051A2 Taper thread cutting machine and method |
| 10/07/1990 | CA2010626A1 Taper thread cutting machine and method |
| 09/26/1990 | CN2062665U Controller of milling machine for processing variable-pitch bold |
| 09/12/1990 | CN2061882U Heart carrier for bolt die |
| 09/04/1990 | US4953325 Thread grinding attachment |
| 08/08/1990 | CN1044425A Universal table drill for tapping |
| 07/31/1990 | US4944639 Thread cutting device |
| 07/25/1990 | EP0379134A1 Process and device for threading |
| 07/10/1990 | US4941104 Numerical control apparatus for controlling a threading operation |
| 06/28/1990 | DE3843951A1 Method and apparatus for whirling workpiece surfaces to be machined |
| 06/19/1990 | US4934040 Spindle driver for machine tools |
| 06/13/1990 | EP0302915A4 Combined hole making and threading tool. |
| 06/06/1990 | CN2057878U Planetary screw rolling machine |
| 06/05/1990 | US4930265 Thread grinding method and machine |
| 05/30/1990 | CN1008154B Moveable machine for processing pipe |
| 05/09/1990 | CN2056881U Portable multifunction threading machine |
| 05/03/1990 | WO1990004494A1 Control system for automatic machine tool for machining helical grooves on articles |