| Patents for B21H 3 - Making helical bodies or bodies having parts of helical shape (2,057) |
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| 10/15/1986 | CN85102977A Cut-off style roll thread flat |
| 10/07/1986 | US4615197 Thread rolling monitoring system |
| 09/17/1986 | EP0194594A2 Thread and profile rolling machine |
| 08/27/1986 | EP0192584A1 Method and apparatus for making grooves in a surface of revolution |
| 08/13/1986 | CN86100365A Rolling machines for tapering serew-threads of tubes |
| 08/13/1986 | CN85202080U Adjustable three rolls cold rolling will for threaded rod |
| 07/31/1986 | WO1986004274A1 Method and device for making grooves on a revolution wall |
| 07/16/1986 | EP0187623A1 Apparatus for cold-pressing a tapered thread |
| 06/03/1986 | US4592221 Method of and an arrangement for producing threads |
| 05/22/1986 | WO1986002867A1 Method of manufacturing drill-shaped cutting tools and rolling die |
| 05/20/1986 | US4589299 Reduction motor shaft provided with screw type double |
| 05/14/1986 | EP0181132A2 Machines for pressure forming surface configurations on a rotary workpiece |
| 04/24/1986 | WO1986002416A1 Thread rolling and improved fastener |
| 04/22/1986 | US4583385 Flat die thread roller |
| 03/27/1986 | WO1986001753A1 Device for shaping spiral drills by rolling or pressing |
| 03/18/1986 | US4576033 Thread rolling die construction |
| 03/04/1986 | US4573376 Method of producing thread rolling die |
| 02/25/1986 | US4572875 Blank for a thread forming screw |
| 02/25/1986 | US4571972 Skewed-axis cylindrical die rolling |
| 02/25/1986 | US4571971 Rod cutting and threading machine |
| 02/19/1986 | EP0171965A2 Method of providing connections for reinforcing bars and joint and connections for such bars |
| 01/14/1986 | US4563890 Cut-off style, roll thread flat dies |
| 01/08/1986 | EP0166758A1 Threading and projection forming on different size diameters |
| 12/31/1985 | US4561277 Method of making screws and dies therefor |
| 12/10/1985 | US4557125 Apparatus for on line, random sample, inspection of cold-formed blanks for threaded fasteners |
| 12/03/1985 | CA1197412A1 Sucker rods, pony rods and production thereof |
| 10/15/1985 | US4546639 Thread rolling dies for forming self tapping screws and the like |
| 10/15/1985 | US4546630 Former having continuous forming-rolling assembly |
| 10/14/1985 | EP0151590A4 A security system for safes. |
| 08/21/1985 | EP0151891A2 Cut-off style, roll thread flat dies |
| 08/21/1985 | EP0151590A1 A security system for safes. |
| 08/13/1985 | US4534690 Assymetrically shaped thread forming screw and method of making same |
| 07/09/1985 | US4527299 Method for forming an internal thread in a hollow body |
| 07/04/1985 | WO1985002797A1 Threading and projection forming on different size diameters |
| 05/21/1985 | US4519040 Method for detecting and recognizing deviations of cyclically recurring processes for the shaping of workpieces |
| 05/02/1985 | EP0139195A1 Method of making screws and dies therefor |
| 02/12/1985 | US4498322 Thread-rolling tool |
| 01/31/1985 | WO1985000400A1 A security system for safes |
| 01/01/1985 | US4491002 Method for forming on workpiece resilient thread having closed helical cavity inside the thread |
| 12/04/1984 | US4485510 Threaded fastener having minimized length and weight and method to make it |
| 10/10/1984 | EP0121252A2 A method of rolling transverse ribbed tubes and a set of tools for rolling transverse ribbed tubes |
| 08/08/1984 | EP0115012A1 Threading method and device |
| 08/07/1984 | US4463588 Skewed-axis cylindrical die rolling |
| 07/25/1984 | EP0114108A2 Method for cold sizing a round workpiece having multiple diameters |
| 07/10/1984 | US4459164 Method and apparatus for compensating for axial deformation of screw shafts due to heat treatment |
| 07/03/1984 | US4457153 Method and apparatus for forming internal threads in tubes |
| 06/13/1984 | EP0110863A1 Device for working the profile root of threads |
| 05/29/1984 | CA1168002A1 Self thread creating fastener and method and apparatus for making the same |
| 05/23/1984 | EP0109378A1 Device for working the profile root of threads |
| 04/17/1984 | CA1165602A1 Self-locking threaded fastener |
| 04/17/1984 | CA1165514A1 Thread forming of sintered porous metal shapes |
| 04/04/1984 | EP0104694A1 Method of manufacturing the housing of a spiral-groove bearing |
| 02/29/1984 | EP0101452A1 Method of forming an internal thread in a hollow body |
| 02/16/1984 | WO1984000511A1 Method and device for the finishing by roller burnishing of a helical thread cut on a cylindrical part |
| 02/07/1984 | US4430036 Thread forming fastener |
| 01/24/1984 | US4426870 Method and tool for making elastic thread having closed helical cavity inside thread profile |
| 01/24/1984 | US4426869 Radial infeed thread roll attachment |
| 01/24/1984 | US4426868 Apparatus and method for forming fins on a tube surface |
| 12/27/1983 | CA1159204A1 Through-feed cylindrical thread rolling dies and method of forming same |
| 10/25/1983 | US4411147 Rolling dies and method of forming the same |
| 10/18/1983 | US4409698 Tap for pressing elastic thread profiles |
| 10/11/1983 | US4408418 Method of forming through-feed cylindrical thread rolling dies |
| 08/18/1983 | WO1983002741A1 Method of forming an internal thread in a hollow body |
| 07/19/1983 | US4394421 Thread forming of sintered porous metal shapes |
| 07/19/1983 | US4393676 Process for producing connecting member shanks, such as hinges for window and door frames, formed of cylindrical sections of different diameter, with continuous even screw thread, that is with constant pitch |
| 04/05/1983 | CA1143962A1 Concrete-reinforcing rod, particularly anchor rod, and method of manufacturing it |
| 02/16/1983 | EP0071844A2 Rolling dies and method of forming the same |
| 02/09/1983 | EP0071407A1 Blind hole anchor nut fastener |
| 01/25/1983 | US4369644 High speed two travels thread rolling machine |
| 12/28/1982 | US4365495 Method of making a mandrel for a self plugging blind rivet |
| 10/13/1982 | EP0062441A2 Rotary forming tool and spindle therefor |
| 10/12/1982 | US4353233 Dies for making thread-forming fasteners |
| 09/28/1982 | US4351626 Self-locking threaded fastener |
| 09/14/1982 | CA1131417A1 Method for roll pointing a threaded screw |
| 07/27/1982 | US4341297 Feed mechanism |
| 06/29/1982 | US4336703 Tangential rolling head |
| 06/15/1982 | US4334814 Self-tapping screw for use in plastics |
| 06/08/1982 | CA1125149A1 Method and apparatus for producing threaded self-tapping stainless steel screws |
| 06/08/1982 | CA1125009A1 Method and apparatus for producing threaded self-tapping stainless steel screws |
| 06/08/1982 | CA1124964A2 Dies for making thread-forming screw with step taper |
| 04/06/1982 | US4322961 Die rolling machine |
| 02/16/1982 | US4315340 Method and apparatus for making a self-thread creating fastener |
| 01/26/1982 | US4312207 Rolling mill for forming cross ribbed pipes |
| 01/21/1982 | WO1982000109A1 Thread-rolling tool |
| 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 |
| 12/22/1981 | CA1114565A1 Self-tapping screw and method of making same |
| 11/24/1981 | US4301563 Method for roll pointing a threaded screw |
| 10/20/1981 | US4295351 Self-tapping stainless steel screw and method for producing same |
| 10/13/1981 | CA1110474A1 Thread forming screw with step taper and dies for making the same |
| 10/13/1981 | CA1110473A1 Extruding and tapping screw |
| 09/15/1981 | US4289006 Apparatus for producing threaded self-tapping stainless steel screws |
| 08/25/1981 | CA1107465A1 Adjustable holder for the stationary die of a thread rolling machine |
| 07/07/1981 | CA1104310A1 Pointing machine |
| 06/25/1981 | WO1981001672A1 Tap for pressing out thread with resilient profile |
| 04/07/1981 | US4259758 Method of making a self-tapping screw |
| 03/17/1981 | US4255959 Dies for making thread-forming screw with step taper |
| 02/24/1981 | US4252009 Re-rolling attachment for thread rolling machine |
| 02/24/1981 | CA1096147A1 Heat transfer tube and method of making same |
| 02/19/1981 | WO1981000365A1 Method of manufacturing resilient screw thread with closed helical cavity inside its profile and thread-rolling tool therefor |
| 02/03/1981 | CA1094787A1 Method of forming helically finned pipes and an apparatus for forming the same |