| Patents for B21H 3 - Making helical bodies or bodies having parts of helical shape (2,057) |
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| 05/08/2002 | CN1347773A Winder for internal screw copper pipe coil-drawbench |
| 05/02/2002 | US20020051695 Light alloy thread-forming screw and its production method |
| 04/18/2002 | US20020043094 Tooth rolling flat dies and method for forming teeth |
| 04/16/2002 | US6371709 Screws and threadforms |
| 04/11/2002 | US20020042302 Bolt and a manufacturing method thereof |
| 03/27/2002 | EP1191241A1 Method of manufacturing ball joint and housing for the ball joint |
| 03/27/2002 | EP1017518B1 Flowturning device and method for producing internal geared wheels with two sets of inner toothing |
| 03/27/2002 | CN1081497C Treading tool for rolling compound thread and processing method thereof |
| 03/20/2002 | EP1187958A1 Concrete structure comprising anchor rods and anchor rod |
| 03/13/2002 | EP1186360A2 Method and device for the manufacture of screw elements |
| 03/13/2002 | CN2481432Y Thin wall metal pipe tapping machine |
| 02/21/2002 | DE10039011A1 Bolt element producing process involves measuring out wire pin, fitting it between two roll jaws and rolling wire pin to reduced diameter in one sector |
| 02/19/2002 | US6347917 Bolt with column and polygonal pillar to prevent seizure |
| 02/06/2002 | CN2475499Y A screw thread rolling machine for reinforcement end |
| 01/31/2002 | US20020013178 Reciprocating type thread rolling apparatus |
| 01/30/2002 | CN2474257Y Reinforced bar straight thread roller head |
| 01/24/2002 | WO2002005985A1 Method for producing a shaft and device containing one such shaft |
| 01/24/2002 | DE10034410A1 Verfahren zum Herstellen einer Welle sowie Vorrichtung beinhaltend eine solche Welle A process for producing a shaft and apparatus including such a wave |
| 01/23/2002 | CN2472843Y Screw pipe rolling mill |
| 01/16/2002 | CN1077816C Method for making joint screw of steel bar end and mfg. device thereof |
| 01/10/2002 | US20020002852 Component rolling tool of dynamic pressure groove and component rolling method |
| 01/03/2002 | US20020000312 Heat transfer tube for evaporation with variable pore sizes |
| 01/02/2002 | EP1166916A2 Reciprocating type thread rolling apparatus |
| 01/02/2002 | CN2468646Y Adjusting mechanism for automatic thread-forming tool |
| 01/02/2002 | CN2468628Y Automatic checking device for screw making machine |
| 01/01/2002 | US6334370 Ball screwed nut, linearly guiding apparatus using the same, ball screw for steering and method of manufacturing the ball screwed nut |
| 12/13/2001 | WO2001094048A1 Cold rolling machine |
| 12/13/2001 | DE10028740A1 Profile rolling machine, has segmenting tool freely rotatable or fixed to roll spindle for profile rolling tool |
| 12/13/2001 | DE10028165A1 Cold rolling machine comprises two profiled rollers moving in opposite directions and each arranged on a guide over a carriage, and an adjusting device having an adjustment drive |
| 12/04/2001 | US6324887 Thread rolling dies and process for forming same |
| 11/29/2001 | DE10024682A1 Wärmeaustauscherrohr zur Verdampfung mit unterschiedlichen Porengrößen Heat exchanger tube for evaporating with different pore sizes, |
| 11/28/2001 | CN1324278A Light alloy thread-forming screw and its prodn. method |
| 11/28/2001 | CN1075405C Method for making rotary drill tool |
| 11/21/2001 | EP1156294A2 Tube for evaporative heat exchanger with pores having different size |
| 11/14/2001 | CN2459114Y Screw mould structure |
| 11/13/2001 | US6314778 Rolling die and surface processing method for rolling die |
| 11/07/2001 | CN2458106Y Spiral polygon thread screw mould |
| 10/16/2001 | US6301945 Rack slide assembly and machine for rolling splines in a round workpiece |
| 10/11/2001 | WO2001075317A1 Method of manufacturing ball joint and housing for the ball joint |
| 10/10/2001 | CN2452645Y Apparatus for forming interal screw of copper tube |
| 10/09/2001 | US6298703 Roll for a radial thread-rolling head |
| 10/03/2001 | CN2451265Y Rolling processing apparatus for reinforcing bar connection screw |
| 10/02/2001 | US6295854 Device and method for moulding a grooved structure into a tubular workpiece |
| 09/26/2001 | CN2449841Y Stage helical internal thread core |
| 09/26/2001 | CN2449830Y Take-up device of internal threaded copper pipe coiling drawing machine |
| 09/20/2001 | WO2001068288A1 Thread-rolling end-working attachment |
| 09/20/2001 | WO2001068287A1 Process for forming a threaded member |
| 09/19/2001 | EP1133643A1 Lightweight threaded fastener and thread rolling die |
| 09/13/2001 | WO2001066280A1 Method for adjusting the reference of inclination between the grooved rolls of a shape mill |
| 09/13/2001 | DE10011681A1 Profile rollers setting method for profile rolling machine uses measured inclination difference for adjusting relative rotation position between rolling spindles |
| 09/11/2001 | US6287210 Process of forming a twisted, spirally grooved member and the member formed thereby |
| 09/07/2001 | WO2001064365A1 Smart machine tool system |
| 08/22/2001 | EP1124658A1 Vertically movable forming racks |
| 08/16/2001 | US20010014625 Thread rolling tap |
| 08/01/2001 | CN1305875A Technology for manufacturing helicoid of sealer for steel drum as package container |
| 07/25/2001 | CN2439917Y Cold milled-twisted concret bar and cold milling machine for cold milling screw concrete bar without welding |
| 07/18/2001 | EP1116888A2 A self-threading screw provided with a point and apparatus to produce it |
| 07/12/2001 | US20010007629 Self-threading screw provided with a point and apparatus to produce it |
| 07/11/2001 | EP0785831B1 Method of producing a metal hollow body, hollow bodies produced according to this method and device for carrying out this method |
| 07/05/2001 | DE19963451A1 Numerically-controlled system used in machine tool |
| 07/03/2001 | US6253589 Flow-turning device and method for producing internally geared wheels using two sets of internal toothing |
| 06/27/2001 | EP1109637A1 Light alloy thread-forming screw and its production method |
| 06/21/2001 | DE19958827A1 Gewindefurcher und dessen Anwendung Forming taps and its application |
| 06/14/2001 | WO2001041952A1 Precise columnar member and method of producing the same |
| 06/13/2001 | EP1106292A1 Forming tap and its use |
| 06/13/2001 | EP1105654A1 Fastener having a lobular cross section and ridges along the thread axis |
| 05/25/2001 | WO2001035871A1 An element intended to be implanted in body tissue, and a device for manufacturing such an element |
| 05/08/2001 | CA2197021C Method of manufacturing connector bolt |
| 05/02/2001 | CN1293100A Technology for machining top arc of teeth for thread rolling die |
| 04/17/2001 | US6216510 Method of producing self-lock screw |
| 04/10/2001 | US6213885 Castellated flange nut |
| 04/10/2001 | US6213884 Case hardened self-drilling, self-tapping, self-piercing fasteners and process for making the same |
| 04/05/2001 | WO2001023118A1 Method of processing connecting ends of deformed steel bar used for reinforcing concrete, and deformed steel bar processed by this method |
| 04/04/2001 | EP1088171A2 Thread forming fastener |
| 03/28/2001 | EP1087149A2 A bolt and a manufacturing method thereof |
| 03/20/2001 | US6202461 Tangential thread rolling head |
| 03/15/2001 | WO2001018409A1 Improvements relating to self-drilling screws |
| 03/15/2001 | DE19955768A1 Shaft portion of ball-and-socket joint for use in cars is produced by rolling cold-forged blank, cavity being formed in head to improve its sphericity and undulating surface on the surface of chamber to improve roughness of surface of ball |
| 02/28/2001 | CN1285248A Method and apparatus for rolling working steel bar joint screw |
| 02/27/2001 | US6192727 Mold seat adjusting structure of thread rolling machine |
| 02/13/2001 | CA2077733C Thread forming method and apparatus |
| 01/31/2001 | EP1072337A1 Flat-die type rolling machine having device for fastening together die-support frame members and method of fastening the same |
| 01/31/2001 | CN2416981Y Mould of machine for mfg. helical self threading machine |
| 01/23/2001 | US6176664 Fastening screw and method of forming same |
| 01/11/2001 | WO2001002111A1 Method and device for rotating and machining bar material |
| 12/28/2000 | WO2000079071A1 Concrete structure comprising anchor rods and anchor rod |
| 12/21/2000 | WO2000031424A8 Short point anti-cross-threading screw |
| 12/05/2000 | US6155761 Short point anti-cross-threading design |
| 11/21/2000 | US6149363 Lightweight threaded fastener and thread rolling die |
| 11/02/2000 | EP1048798A1 Method for manufacturing externally threaded reinforcing bars |
| 11/02/2000 | DE19918230A1 Hypereutectic aluminum-silicon alloy cylinder liner blank, for incorporation during casting of a light metal crankcase, is mechanically roughened on its outer surface by radial embossing |
| 11/01/2000 | CN1057946C Rib-rolling mill |
| 10/25/2000 | EP1046439A2 Roll for a radial thread rolling head |
| 10/24/2000 | US6135892 Method of forming a short point anti-cross threading member |
| 09/08/2000 | WO2000026546B1 Lightweight threaded fastener and thread rolling die |
| 09/06/2000 | CN1265613A Flat thread rolling die for pointed screw |
| 08/29/2000 | CA2186388C Method of producing a metal hollow body, hollow bodies produced according to this method and device for carrying out this method |
| 08/17/2000 | WO2000047349A1 Method for externally threading a deformed bar |
| 07/26/2000 | EP1022075A2 Device for machining a workpiece with a tool |
| 07/19/2000 | CN1260259A Ball-screw nut and making method thereof, linear guiding device and ball-screw for turning |