| Patents for B23G 7 - Forming thread by means of tools similar both in form and in manner of use to thread-cutting tools, but without removing any material (352) |
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| 05/28/1998 | DE19649190A1 Strengthened thread production using cutting and grooving tool |
| 09/12/1997 | WO1997032682A1 Thread-producing tool |
| 08/26/1997 | US5660594 Method of making a threaded connection for reinforcing bars |
| 04/23/1997 | CN2252673Y External thread rolling tool for drill rod |
| 04/09/1997 | EP0767024A1 Thread forming tap |
| 12/11/1996 | CN2242155Y Thread rolling cutter |
| 10/30/1996 | EP0739256A1 Method of making a threaded connection for reinforcing bars |
| 05/01/1996 | CN1031693C Roller for thread of cover plate billet of metal container |
| 07/25/1995 | US5435786 Method of making a component with a threaded hole |
| 06/21/1995 | EP0548195B1 Component with threaded hole |
| 08/23/1994 | US5340254 Thread forming screw for forming an internal thread in a low ductility material |
| 05/03/1994 | US5307662 Roll threading apparatus for threading end blank for metal drum container |
| 03/15/1994 | US5293765 Method and apparatus for the manufacture of threaded aluminum containers |
| 02/15/1994 | CA2042805C Roll grooving apparatus |
| 12/09/1993 | WO1993024257A1 Method of making a threaded connection for reinforcing bars |
| 08/25/1993 | CN1075436A Roller for thread of cover plate billet of metal container |
| 08/04/1993 | EP0553907A1 Thread forming screw and method of forming an internal thread in a low ductility material |
| 01/19/1993 | CA1312752C Threaded fastener |
| 10/28/1992 | EP0510291A1 Method of and device for manufacture of threaded cans made of aluminium |
| 04/02/1992 | WO1992004997A1 Component with threaded hole |
| 01/02/1992 | EP0463274A1 Roll grooving apparatus |
| 07/30/1991 | US5035019 Cold-forming tap |
| 04/23/1991 | CA1283312C Tangless helically coiled insert |
| 04/18/1991 | DE3934621A1 Tap for chipless forming of screw threads - has hard metal inserts running along tap in regions of highest forming stress |
| 08/09/1989 | CN2042389U Supplementary apparatus for thread rolling machine tool |
| 02/07/1989 | US4802807 Threaded fastener |
| 01/03/1989 | US4794821 Method of roll forming a skip threading tap |
| 07/13/1988 | CN87214769U An extrusion die with low extruding torsion |
| 01/27/1988 | EP0254533A2 Method and apparatus for roll forming interrupted threading taps |
| 01/19/1988 | CA1231509A1 Process for tapping a tube or piston rod made of composite materials |
| 07/15/1987 | EP0228981A1 Tangless helically coiled insert |
| 04/23/1987 | DE3537087A1 Tap for cutting or chip-free machining thread in holes - in which thread run out of last threads lies outsides envelope of thread core diameters |
| 03/11/1987 | CN86101528A Method for roll forming of a screw tap having interval thread |
| 02/24/1987 | US4645398 Tangless helically coiled insert |
| 01/31/1987 | CN86102147A Semi-automatic rolling tool for external thread |
| 09/30/1986 | US4614631 Process for screw-cutting in a tube or link made from a composite carbon fiber based material coated with polymerized resin |
| 09/10/1985 | US4539832 Hole sizing tool |
| 06/26/1985 | EP0146447A1 Method of producing a thread in a tube or a piston rod made of a composite material |
| 01/01/1985 | US4491002 Method for forming on workpiece resilient thread having closed helical cavity inside the thread |
| 12/20/1983 | US4420865 Method for rethreading tubular members |
| 10/18/1983 | US4409698 Tap for pressing elastic thread profiles |
| 09/06/1983 | US4402120 Apparatus for rethreading tubular members |
| 08/16/1983 | CA1151816A2 Threading attachment |
| 02/16/1983 | EP0072280A1 Tap for cutting great-precision threads |
| 01/04/1983 | CA1138607A1 Method of forming screw threaded metal parts |
| 01/07/1982 | WO1982000014A1 Method of obtaining on a workpiece a resilient screw thread with closed helical cavity inside its profile and thread-forming tool therefor |
| 06/25/1981 | WO1981001672A1 Tap for pressing out thread with resilient profile |
| 06/09/1981 | US4271554 Combination drill and tap tool |
| 12/09/1980 | US4237948 Screw threaded members and their manufacture |
| 09/19/1979 | EP0004089A1 Forming tap |
| 06/27/1978 | US4096722 Roll-type thread cutting die |
| 07/20/1976 | USRE28907 Self-tapping threaded bushings |