| Patents for B23G 1 - Thread cutting; Automatic machines specially designed therefor (3,392) |
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| 08/03/1994 | CN2173129Y Portable thred working machine |
| 07/21/1994 | WO1994015744A1 Manually-operated threading device |
| 07/12/1994 | US5328303 Automatic spindle moving device for tapping/drilling machine |
| 07/07/1994 | WO1994014561A1 Linear roller tap driver assembly |
| 07/07/1994 | CA2150484A1 Linear roller tap driver assembly |
| 06/23/1994 | DE4342544A1 Reversible cutter plate for milling and tapping |
| 06/15/1994 | CN2168673Y Automatic groove changing device of screw milling machine |
| 05/10/1994 | US5310292 Linear roller tap driver assembly |
| 05/03/1994 | US5307549 Apparatus and method for synchronized control of machine tools |
| 04/27/1994 | CN2163019Y Reciprocating threading machine |
| 04/19/1994 | CA2038630C Threading machine chuck |
| 04/13/1994 | CN2161402Y Thread cutting equipment for external conical surface |
| 04/06/1994 | CN2160490Y Special lathe for cutting thread on excircle |
| 04/05/1994 | US5299895 Ratcheting threading tool |
| 03/30/1994 | CN2159846Y Inner teeth ratchet tube thread die |
| 03/30/1994 | CN2159845Y Double shaft screw driving machine tool |
| 03/29/1994 | US5297997 Hand held threading device for earring post |
| 03/23/1994 | CN2159277Y Portable electric threader |
| 03/16/1994 | CN1083755A Taper thread cutting machine |
| 03/09/1994 | CN2158319Y Threading machine for tube or pipe |
| 02/23/1994 | CN2156975Y Pipe thread die stock |
| 02/22/1994 | CA1327136C Method for cutting the flanks of an infeed worm and worm milling machine |
| 02/02/1994 | EP0394459B1 Device for confirming the tap operation in the rigid tapping |
| 01/18/1994 | CA1326114C Method of and apparatus for thread mill drilling |
| 01/12/1994 | CN2152632Y Automatic thread cutting machine |
| 12/29/1993 | CN2150954Y Two-position screw machine |
| 12/22/1993 | CN2150002Y Hand-electric tap |
| 12/16/1993 | DE4218886A1 Head accommodating thread-cutting die - contains holding and changeover mechanism for cutter and accommodates rotary driving member, typically in square-section bore |
| 12/15/1993 | CN2149266Y Semi-automatic tapping screws |
| 11/24/1993 | CN2147063Y Hand threading machine |
| 11/24/1993 | CN2147062Y Machine tool special for repairing foot screw |
| 11/23/1993 | US5263799 Threading apparatus |
| 11/17/1993 | CN2146329Y Multi-purpose portable electric thread-cutting machine for water tubes |
| 11/11/1993 | DE4215095A1 Precision cutting insert holder for thread tapping - has cutting insert pushed into toward cavity in holder and mechanically fixed by rotary holding ring |
| 11/03/1993 | CN2145086Y Hand pipe buttress with large-caliber |
| 10/27/1993 | CN2144550Y Forming machine for outside diameter thread cutting |
| 10/05/1993 | US5250007 Method and apparatus for forming threads with variable pitch |
| 09/23/1993 | DE4208291A1 Rotary tool magazine for CNC controlled machine tool - has number of tool locating positions to receive stems of tool holders having bodies that can be pivoted to set angular positions |
| 09/14/1993 | US5244320 Wood tapping machine |
| 09/01/1993 | EP0557530A1 Numerical control device |
| 08/25/1993 | EP0294486B1 Tapping controller |
| 08/17/1993 | US5237251 Control unit for a machine with a tapping function |
| 08/03/1993 | US5233535 Method for and apparatus for controlling tapping process |
| 07/29/1993 | DE4306023A1 Universal threading diebox tool - has sleeve with front guide bush which slides over basecup and depresses balls which lock die into die recess |
| 07/27/1993 | CA1320614C Automatic tapping device |
| 07/21/1993 | CN2138538Y Multifunction thread cutter |
| 07/01/1993 | DE4218687A1 Tool for cutting external screw threads - has replaceable thread cutting die to enable threads of different diameters to be cut |
| 06/23/1993 | CN2136709Y Portable electric pipe thread-cutting die stroke |
| 06/22/1993 | US5221234 Method and apparatus for making a screw having variably canted threads |
| 06/16/1993 | EP0364600B1 Round screw machining method |
| 05/25/1993 | US5213453 Cooling systems in tapping attachments suitable for high pressure applications |
| 05/25/1993 | US5213347 Socket driveable tap apparatus |
| 05/19/1993 | CN2133393Y Hand tapping, jacket band screw assisting device |
| 05/18/1993 | US5210980 Diamond grinding machine for threading and forming hard materials such as ceramics, carbide and glass objects |
| 05/12/1993 | EP0267964B1 System for controlling the tapping operation |
| 05/11/1993 | US5209616 Drive in tapping attachments |
| 04/27/1993 | CA1316842C Cover and seal for power driven threading machine oil reservoir |
| 04/22/1993 | DE4232076A1 Drive for vertical pillar drill - has vertically-sliding threaded spindle for chuck, engaging with pair of worm wheels whose horizontal axles can be braked |
| 04/21/1993 | EP0302915B1 Combined hole making and threading tool |
| 04/20/1993 | US5203874 Device for securing dies on threading machines |
| 04/20/1993 | US5203652 Self-aligning tap and die wrench and universal threading tool |
| 04/20/1993 | US5203651 Tapping attachments |
| 04/14/1993 | EP0536854A2 Thread cutting diestock assembly |
| 04/08/1993 | DE4231975A1 Portable electric pipe threader - is of cast monoblock construction in which widths of gear housing and rear pointing motor are less than cutter head width |
| 03/18/1993 | WO1993004817A1 Numerical control device |
| 03/03/1993 | CN1069436A Automatically positive and negative rotation threading device with deceleration and feeding function |
| 02/24/1993 | CN2127332Y Folding-arm tapping machine |
| 02/23/1993 | US5188491 Method for cutting the flanks of an infeed worm and worm milling machine |
| 02/02/1993 | US5184053 Control device for a tool driving unit |
| 01/13/1993 | EP0522272A2 Threadgrinding machine with a grinding unit mounted on the grinding table for profile grinding operations |
| 12/30/1992 | EP0520772A2 Cooling systems in tapping attachments suitable for high pressure application |
| 12/30/1992 | EP0520771A2 Improved drive in tapping attachment |
| 12/17/1992 | DE4119491A1 Thread forming die and manufacturing method - has reducing diameter thread to form final thread diameter which is polygonal with rounded corners |
| 11/10/1992 | US5161925 Apparatus for bringing a tool to a workpiece and applying axial force thereto, in particular as a tapping machine |
| 10/28/1992 | CN2119981U Hand-operated electric threading machine |
| 10/27/1992 | US5158404 Taper thread cutting machine and method |
| 10/21/1992 | EP0509143A1 Tapping apparatus |
| 10/15/1992 | DE4111808A1 Guide block for hand held thread cutting taps - comprises hinged halves for ease of removal and several different guide hole diameters |
| 09/30/1992 | CN2117227U Screw chasing machine for front fork and bottom bracket of bicycle |
| 09/23/1992 | CN2116543U Hand combined tapping tool |
| 09/08/1992 | US5144871 Numerically controlled screw cutting method for fine screw surface finishing |
| 09/01/1992 | US5143492 Device and tool bit for cutting all known types of threads (except buttress thread) in one single work process |
| 09/01/1992 | US5143161 Right angle positive feed tapper |
| 08/18/1992 | CA1306327C Drive bar attachment for threading machines |
| 08/12/1992 | CN2112466U Manually-operated change tapping device |
| 08/12/1992 | CN1017785B Threading machine |
| 07/21/1992 | US5132912 Numerical control method and system |
| 07/21/1992 | US5131794 Dog drive for tapping attachments |
| 07/14/1992 | US5129188 Method of manufacturing a thread cutting tool with wear resistant teeth |
| 06/24/1992 | CN2107965U Automatic reversal tapper |
| 06/24/1992 | CN1017124B Tool driving unit |
| 06/17/1992 | CN2107341U Adjustable multi-shaft tapping machine |
| 06/10/1992 | CN2106676U Three-working position pipe threading machine |
| 06/04/1992 | DE4123344C1 Angular guide for tap drill with guide sleeve - which has work contacting foot of several brackets, peripherally and vertically displaceable |
| 06/04/1992 | DE4037982A1 Screw plate holder - has basic ring provided with hand grip with radial holder bolts fitted in ring pockets |
| 06/03/1992 | CN2106024U Plastic pipe box thread-cutting tool |
| 06/03/1992 | CN2106023U Manually-operated thread-cutting pipe device |
| 06/03/1992 | CN2106022U Multifunctional wrenching lever |
| 06/03/1992 | CN1016856B Universal tools with impact and adjustable function for plumbers |
| 05/26/1992 | US5117368 Control device for tapping |