| Patents for B23G 1 - Thread cutting; Automatic machines specially designed therefor (3,392) |
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| 05/31/1983 | US4386407 Lathe control system |
| 03/30/1983 | EP0075155A2 Method of cleaning blind hole threads in reactor pressure vessels with removed or mounted reactor covers by means of a cleaning machine, and machine for carrying out this method |
| 03/22/1983 | CA1143188A1 Drilling-tapping machine |
| 03/08/1983 | US4375708 Non-indexing machining method and apparatus |
| 02/01/1983 | US4371354 Controlled-torque apparatus |
| 01/04/1983 | CA1138607A1 Method of forming screw threaded metal parts |
| 12/22/1982 | EP0067748A2 Tool holder with coolant fluid delivery system |
| 12/22/1982 | EP0067232A1 Digitally controlled screw thread cutting device |
| 12/21/1982 | US4364694 Tap holder |
| 11/16/1982 | US4358911 Machine for relief grinding tap threads |
| 10/26/1982 | US4355931 Tapping drill |
| 10/20/1982 | EP0062681A1 A thread cutting control method |
| 10/06/1982 | EP0061554A1 Die with holder |
| 10/05/1982 | US4353018 Control system for synchronized operation of machine tool motors |
| 09/21/1982 | US4349931 Threading die couple |
| 08/03/1982 | US4342528 Tapping machine |
| 07/27/1982 | CA1128559A1 Vices |
| 07/20/1982 | US4339836 Lead screw threading assembly |
| 07/08/1982 | WO1982002162A1 Digitally controlled screw thread cutting device |
| 07/06/1982 | US4338556 Electronically controlled thread-cutting machine |
| 06/30/1982 | EP0054912A2 Device, particularly portable device for machining tubes and/or bars and the like |
| 04/29/1982 | WO1982001336A1 Threading control system |
| 03/24/1982 | EP0047807A2 Tapping attachment with improved torque release clutch |
| 03/09/1982 | US4318646 Tapping machine |
| 02/17/1982 | EP0046097A1 Lathe control system |
| 02/17/1982 | EP0045750A1 Device for cutting and threading pipes. |
| 12/08/1981 | US4304159 Automatic screw machines |
| 09/08/1981 | US4288183 Tool holder or spindle |
| 09/08/1981 | US4287627 Method and means for threading dowels |
| 09/08/1981 | CA1108357A1 Transportable exterior thread cutting machine |
| 09/01/1981 | CA1107989A1 Apparatus for screw-threading |
| 08/20/1981 | WO1981002267A1 Device for cutting and tapping pipes |
| 08/18/1981 | US4284374 Rotary tool holder |
| 08/04/1981 | US4281430 Method and apparatus for machining pipe collars |
| 07/21/1981 | US4279182 Machine tool |
| 07/14/1981 | US4278374 Apparatus for screw-threading |
| 07/07/1981 | US4277209 Threading attachment |
| 06/23/1981 | US4274768 Tapping spindle |
| 04/21/1981 | CA1099458A1 Portable power drive |
| 04/07/1981 | US4260302 Transfer machines |
| 04/01/1981 | EP0026022A1 Drilling and tapping machine |
| 03/31/1981 | CA1098555A1 Vices |
| 03/25/1981 | EP0025652A1 Control system for synchronising machine tool motors for tapping operations |
| 03/17/1981 | US4255991 Method and apparatus for electromechanically retro-fitting a conventional automatic screw machine to accept numerical control |
| 01/13/1981 | US4244068 Method and apparatus for machining pipe collars |
| 12/09/1980 | CA1091068A1 Tapping attachment for a machine tool |
| 09/30/1980 | US4225273 Apparatus for threading rods |
| 07/22/1980 | US4213723 Thread cutting die stock |
| 07/22/1980 | US4213722 Transportable external thread cutting machine |
| 06/24/1980 | US4209274 Portable power drive |
| 01/29/1980 | US4185943 Drilling and tapping machining apparatus |
| 07/10/1979 | US4160395 Thread-cutting machine |
| 05/01/1979 | CA1053450A1 Floating tool holder |
| 04/17/1979 | US4149820 Pipe tapping ratchet assembly |
| 03/06/1979 | US4142330 Thread grinding machine |
| 02/27/1979 | US4141279 Method and apparatus for cutting circumferential grooves on the interior of a workpiece |
| 11/14/1978 | US4125057 Planetary milling machine |
| 10/31/1978 | US4123192 Tapping attachment for a machine tool |
| 10/31/1978 | US4122572 Advancing mechanism for automatic screw thread cutting machines |
| 09/19/1978 | US4115026 Lead screw tapping arrangement for use with self-opening die heads and collapsible taps |
| 09/19/1978 | US4115025 Lead screw tapping unit |
| 09/05/1978 | US4111591 Combination tap and die wrench |
| 07/11/1978 | US4099283 Device for centering and maintaining short spool pieces |
| 06/27/1978 | US4097182 Combination tap and die wrench |
| 06/27/1978 | US4096770 Method and apparatus for modifying the position of a machine slide to compensate for different following errors |
| 06/20/1978 | US4095917 Die holder |
| 05/02/1978 | US4087195 Tapping accessory |
| 03/14/1978 | US4079235 Computer numerically controlled threadcutting machine tool |
| 01/03/1978 | US4066380 Combined boring and threading tool |
| 12/20/1977 | US4063837 Preselected releasable threaded coupling member |
| 11/29/1977 | US4060334 Machine for machining bars and tubes |
| 09/27/1977 | US4050835 Hydraulic tapping apparatus |
| 08/16/1977 | US4041729 Overland coupling device |
| 07/19/1977 | US4036086 Thread cutting apparatus and method of operating same |
| 07/12/1977 | US4034646 Thread milling apparatus |
| 06/14/1977 | US4028762 Method of threading short spool pieces |
| 05/24/1977 | US4025219 Pipe machining apparatus, particularly combination pipe threading and cutting machine |
| 05/17/1977 | US4023211 Apparatus for automatically forming threaded portion having predetermined taper and length for use in automatic threading machine |
| 05/03/1977 | US4021132 Floating tool holder |
| 04/19/1977 | US4019035 Method and apparatus for controlling the initiation of multiple start threading cuts |
| 04/12/1977 | US4016801 Method for forming threads |
| 03/29/1977 | US4014421 Clutching means adapted for use in tapping attachments |
| 02/08/1977 | US4006994 Tap chucking means |
| 12/28/1976 | US3999642 Clutching means adapted for use in tapping attachments |
| 12/21/1976 | US3998565 Tapper incorporating reverse rotation mechanism |
| 10/12/1976 | US3985463 Automatic thread cutting device |
| 10/05/1976 | US3983786 Method and apparatus for refinishing grooves in rollers |
| 10/05/1976 | US3983589 Coated conduit threader |
| 06/29/1976 | US3966348 Device for tapping bores |
| 03/30/1976 | US3946844 Clutching means adapted for tapping attachments |
| 02/10/1976 | US3937110 Lathe for machining hollow parts |
| 01/20/1976 | US3933060 Automatic lathe |