| Patents for B21D 41 - Application of procedures in order to alter the diameter of tube ends (2,982) |
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| 03/04/2004 | DE10238306A1 Verfahren zum Herstellen eines rohrförmigen Platzhalters und Platzhalter A method for producing a tubular placeholder placeholder and |
| 03/03/2004 | CN1478620A Method for manufacturing pipeline system with connecting part |
| 02/25/2004 | EP1391186A1 Method for manufacturing a tubular spacer, and spacer |
| 02/12/2004 | WO2004012879A2 Tube crimping/bending apparatus |
| 02/12/2004 | US20040025559 Tube crimping/bending apparatus |
| 02/11/2004 | EP1388382A1 Forming tool movement unit, particularly for manifold closing machines |
| 02/11/2004 | EP1387735A1 Hollow product, method and apparatus for manufacturing the hollow product, and fluid transporting system using the hollow product |
| 02/11/2004 | EP1146973B1 Method for deforming a tube in the proximity of one of its ends and tool therefor |
| 02/10/2004 | US6688400 Downhole sealing |
| 02/05/2004 | DE10333122A1 Verfahren zur Herstellung einer Rohrleitung mit einem Verbindungsbereich A process for producing a pipe with a connecting portion |
| 02/04/2004 | EP1386677A1 Method of working end part of metallic tube body and metallic tube body, and method of manufacturing vibrationproof bush using the working method and vibrationproof bush |
| 02/04/2004 | CN1473086A Hollow member ,manufacturing method, thereof, fluid distribution system using hollow member, and forming apparatus of hollow member |
| 01/22/2004 | US20040011105 Forming method of cylindrical work piece and apparatus for it |
| 01/22/2004 | US20040011103 Method of working end part of metallic tube body and metallic tube body, and method of manufacturing vibrationproof bush using the working method and vibrationproof bush |
| 01/14/2004 | EP1380365A1 Spindle mechanism |
| 01/08/2004 | US20040003645 Method and device for producing steel, especially stainless steel press fittings |
| 01/07/2004 | CN1465452A Metal-plastics composite pipe and mfg. method thereof |
| 01/07/2004 | CN1465451A Hand tool in pliers form for expanding hollow bodies |
| 01/06/2004 | US6672128 Hand tool in pliers form for expanding hollow bodies |
| 01/01/2004 | US20040000182 Tool for locally forming a workpiece |
| 12/24/2003 | CN1131744C Modular multipurpose bending machine and its linear positioning system |
| 12/11/2003 | WO2003101790A1 Method for the production of the beginning of a lance in a gas-conducting system |
| 12/11/2003 | WO2003101642A1 Linear drive metal forming machine |
| 12/11/2003 | US20030226390 Hand tool in pliers form for expanding hollow bodies |
| 12/10/2003 | EP1369188A1 Plier like hand tool for enlarging hollow bodies |
| 12/04/2003 | US20030221472 Well casing and method for threading |
| 12/02/2003 | CA2070857C Post molding wedge forming process for pivot joint internal bushing ends, and applications |
| 11/25/2003 | US6651477 Process for forming tubular components |
| 11/13/2003 | WO2003092925A1 Manufacture method and apparatus mold of electrode for power plug |
| 11/12/2003 | EP1360021A2 Method and apparatus for necking the open end of a container |
| 11/12/2003 | EP1360019A1 Expansion tool for expanding tube ends and pressing device comprising such an expansion tool |
| 11/06/2003 | US20030204943 Hand tool for expanding pipe ends and pressing sleeves onto fittings |
| 11/05/2003 | CN1126892C Expansion shaped insertion-type flexiable & rigid two-purpose joining steel pipe and its producing method |
| 10/28/2003 | US6637248 Method for machining protuberance of special-shaped tube |
| 10/23/2003 | WO2003086679A1 Device for the plastic deformation of work pieces |
| 10/23/2003 | US20030197370 Expansion wedge for use with heat exchanger tube, and structure for mounting tubes to header member of the heat exchanger |
| 10/22/2003 | EP1355080A1 Outer shell unit and method of manufacturing the unit |
| 10/22/2003 | CN2581098Y Closing in mould for improved high-pressure gas steel cylinder |
| 10/22/2003 | CN1450964A 气体发生器 Gas generator |
| 10/09/2003 | WO2003082495A1 Cold diameter reduction press molding method of metal pipe and metal pipe molded by that method |
| 10/08/2003 | CN1447724A Device for forming end area of workpiece |
| 10/01/2003 | EP1347845A1 Hydraulically powered flaring hand tool |
| 09/24/2003 | EP1345711A2 Method and forming machine for deforming a hollow workpiece |
| 09/24/2003 | CN2574803Y Metal mould with die cavity arranged according to square matrix |
| 09/23/2003 | US6622797 Apparatus and method to expand casing |
| 09/18/2003 | US20030172702 Method and forming machine for deforming a hollow workpiece |
| 09/18/2003 | US20030172701 Forming machine and method for deforming a hollow workpiece |
| 09/17/2003 | EP0954396B1 Method for spin forming articles |
| 09/17/2003 | CN2573111Y Roller type hot-spinning reducing machine for steel cylinder |
| 09/16/2003 | US6619099 Hydraulically powered flaring hand tool |
| 09/11/2003 | DE20305730U1 Long-nose pliers hand tool opens small diameter pipe ends for press-fit assembly |
| 09/10/2003 | CN2571517Y Metal-plastics composite pipe |
| 09/10/2003 | CN1440842A Inner high pressure and reducing formation process of automobile axle shell |
| 09/09/2003 | US6615476 Method of manufacturing a hollow shaft having a flange at one end thereof |
| 08/27/2003 | CN2568330Y Thermotube closing structure without reducting pipe |
| 08/27/2003 | CN1438923A Method and device for producing steel, especialy stainless steel press fittings |
| 08/27/2003 | CN1438080A Method for producing aluminium by colol extrusion |
| 08/21/2003 | US20030154600 Hollow member, manufacturing method therof, fluid distribution system using the hollow member, and forming apparatus of hollow member |
| 08/14/2003 | WO2003067088A1 Piston for compressor and method for manufacturing the same |
| 08/06/2003 | CN1116941C High-strength multi-style integral shaping, enclosing and manufacture method |
| 07/31/2003 | WO2003062719A1 Method and tool for mounting a capillary line in a plate-type evaporator, and a plate-type evaporator which is produced by means of the same |
| 07/31/2003 | US20030140676 Dynamic punch |
| 07/31/2003 | US20030140674 Spindle mechanism |
| 07/30/2003 | CN1432441A Making process of conic middle tube |
| 07/29/2003 | US6598294 Method of fabricating a catalyst converter |
| 07/24/2003 | WO2003059547A1 Method and forming machine for manufacturing a product having various diameters |
| 07/24/2003 | US20030136561 Straddle |
| 07/17/2003 | WO2003057386A1 Closure for a gas supply system |
| 07/17/2003 | US20030132032 Method and apparatus for drilling and lining a wellbore |
| 07/09/2003 | EP1053065B1 Method for producing pipes to be connected in a double-wall piping system and implementing machine |
| 07/02/2003 | EP0794844B1 System for constricting a tube wall |
| 06/24/2003 | US6581433 Method of manufacturing a metal pipe with an eccentrically expanded open end |
| 06/18/2003 | CN1424156A Method for rotation press closing large diameter thin wall pipe |
| 06/12/2003 | DE20304385U1 Spindle drive for pipe forming device, has forming components mounted on push part with threaded section cooperating with threaded front end of spindle |
| 06/05/2003 | WO2003045605A1 Device for socket-deforming a tube end and for adjusting its length |
| 06/05/2003 | US20030101788 Die for a semi-product of a combination nipple that connects a flexible hose to a rigid pipe |
| 06/04/2003 | EP1315592A1 Hollow member, manufacturing method therof, fluid distribution system using the hollow member, and forming apparatus of hollow member |
| 06/03/2003 | US6572153 Structure for mounting tubes to header member of a heat exchanger |
| 05/29/2003 | US20030098572 Inflator |
| 05/28/2003 | EP1314622A1 Inflator |
| 05/28/2003 | DE20303728U1 Pipe widening jig is fitted to the base plate of a tube bending jig and can be servo driven |
| 05/28/2003 | DE20303633U1 Shaping device for end of pipe or strong metal rope, assembled of two movable shaping elements, base, and pushing unit |
| 05/21/2003 | EP1311358A1 Device for forming an end area of a workpiece |
| 05/15/2003 | WO2003039784A1 Expanding method and device and resulting expanded elastic articulation |
| 05/07/2003 | EP1226633B1 An alternating stroke crimp pressing tool which is insertable into a crimp press |
| 05/01/2003 | WO2003036012A2 Apparatus and method to expand casing |
| 04/24/2003 | US20030075338 Apparatus and method to expand casing |
| 04/16/2003 | EP1302253A2 Spin-forming method, spin-forming apparatus, and catalytic converter |
| 04/16/2003 | EP1301295A1 Forming machine and method for deforming a hollow workpiece |
| 04/16/2003 | EP1301294A2 Method and forming machine for deforming a hollow workpiece |
| 04/10/2003 | US20030068256 Spin-forming method, spin-forming apparatus, and catalytic converter |
| 04/09/2003 | CN1408620A Mouth reducing maching for packaging steel bucket |
| 04/09/2003 | CN1408486A Integrated extruding method for automobile axle shell |
| 04/08/2003 | US6543552 Method and apparatus for drilling and lining a wellbore |
| 03/26/2003 | EP1294501A1 Method and device for producing steel, especially stainless steel press fittings. |
| 03/25/2003 | US6536315 Spinning device |
| 03/20/2003 | WO2003022481A1 Multipurpose horizontal press having a fixed workpiece-holder for a tubular workpiece to be drawn or tapered |
| 03/13/2003 | US20030046969 Device for forming an end area of a workpiece |
| 03/11/2003 | US6530256 Method and device for expanding tube material |
| 03/04/2003 | US6527049 Apparatus and method for isolating a section of tubing |