| Patents for B21D 15 - Corrugating tubes (1,257) |
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| 02/28/2001 | EP1079192A2 Method of manufacturing a flat corrugated tube |
| 02/27/2001 | US6192726 System and method for corrugating spiral formed pipe |
| 02/08/2001 | WO2001008827A1 Hydraulic positioning assembly for cold rolling tubes |
| 02/08/2001 | WO2001008826A1 Roller assembly for a cold rolling apparatus with angularly offset rotational axes |
| 01/23/2001 | US6176114 Method and apparatus for sequential axial feed hydroforming |
| 12/27/2000 | EP1063027A1 Method of producing pipes of radial cross-section |
| 12/27/2000 | CN1059849C Bending apparatus for obtaining spiral pipe |
| 12/21/2000 | DE19932680A1 Verfahren und Vorrichtung zur Herstellung einer Zweikammerdruckpackung, Bearbeitungswerkzeug zur Verwendung darin sowie damit herstellbare Zweikammerdruckpackung Method and apparatus for producing a dual chamber pressure packing, processing tool for use therein, and thus can be produced dual-chamber pressure pack |
| 12/20/2000 | CN1059612C Rolling apparatus and technique for multi-start spirally grooved tube and axial grooved tube |
| 12/13/2000 | EP1059129A2 Method and device for producing a two chamber pressure pack, forming tool used therein and two chamber pressure pack produced therewith |
| 12/13/2000 | CN1276509A Capillary pipe for refrigerator/air conditioner and making method thereof |
| 12/06/2000 | CN1059136C Method and device for extrusion forging metal floral pipe concave decorative pattern |
| 11/28/2000 | US6151949 Method of manufacturing a flat corrugated tube |
| 11/22/2000 | EP1053800A1 Method and device for producing bellows |
| 11/16/2000 | WO2000067930A1 Corrugated thick-walled pipe for use in wellbores |
| 11/02/2000 | WO2000064606A1 Method for manufacturing a pipe with a not circular cross-section and device therefor |
| 10/18/2000 | EP1044342A1 Hose fitting and die for preparation |
| 09/27/2000 | CN1056790C Punching press apparatus |
| 09/19/2000 | US6119501 Method of deforming an initial pipe having a circular cross-section into a U-shaped section and device for carrying out the method |
| 08/23/2000 | CN2392623Y Hand corrugation forcing-out device for metal flexible corrugated pipe |
| 08/09/2000 | EP1025920A2 A method for producing a multilayer thin-walled bellows of stainless steel |
| 08/09/2000 | EP1025919A2 Method for producing multilayer thin-walled bellows |
| 07/26/2000 | EP1021258A1 Method & apparatus for forming features in cans |
| 07/11/2000 | US6086110 Vibration decoupling connector for exhaust systems |
| 06/29/2000 | WO2000037192A1 Method of producing pipes of radial cross-section |
| 06/29/2000 | DE19954027A1 Making perforated dimpled sheet, for e.g. washing machine drums, involves relating rotation of dimpling and backing rollers to position of holes |
| 06/28/2000 | EP0925129A4 Method and forming die for fabricating torque joints |
| 06/14/2000 | EP1008404A1 Method for ironing spline teeth in pressed stepped sheetmetal and sheetmetal clutch drum formed by same |
| 06/13/2000 | US6073473 Device for corrugating tubes |
| 05/25/2000 | WO2000029143A1 Helically corrugated hollow profile and method and device for its production |
| 04/05/2000 | CN2372075Y Roll-forging die for forming decorative pattern on thin pipe wall |
| 03/22/2000 | EP0987409A2 Vibration decoupler apparatus |
| 02/09/2000 | CN2362611Y Shaping device for polymer lining pipe |
| 01/12/2000 | CN1048200C Apparatus for producing thin metallic tube |
| 12/22/1999 | EP0697927B2 Container beading |
| 12/08/1999 | CN1047115C Device for producing groove knurling tube |
| 12/08/1999 | CN1047114C Method and device for producing convex groove knurling pipe |
| 12/01/1999 | CN2351227Y Corrugated pipe forming seal follow-up apparatus |
| 11/18/1999 | WO1999058891A1 Vibration decoupling connector for exhaust systems |
| 11/17/1999 | EP0956466A1 Device for converting rotary motion into reciprocating motion |
| 11/16/1999 | US5983695 Method of manufacturing a corrugated metallic pipe and corrugated pipe produced by the method |
| 11/10/1999 | EP0955107A1 Mehod of deforming a circular shaped tube in a U-shaped profile and apparatus for executing this method |
| 09/16/1999 | DE19820415C1 Method of forming vehicle axle tube into U-shaped profile |
| 09/16/1999 | DE19811214A1 Roller shaping machine shaping process for jacket of metal-finished container |
| 09/15/1999 | CN1045065C Forging moulding technology for metal pipe |
| 09/14/1999 | US5950472 Bead-formation in metal drum manufacture |
| 08/25/1999 | EP0937520A2 Plastic working method and plastic working machine |
| 08/18/1999 | CA2262183A1 Plastic working method and plastic working machine |
| 08/12/1999 | WO1999039851A1 Method of producing circular cylinder member |
| 07/28/1999 | CN1224374A Structuring process that stiffens and protects surface of thin material webs |
| 07/15/1999 | WO1999035432A1 Hose fitting and die for preparation |
| 07/15/1999 | CA2317525A1 Hose fitting and die for preparation |
| 07/07/1999 | CN2327467Y Apparatus for shaping heat radiative bellows of transformers |
| 06/30/1999 | EP0925129A1 Method and forming die for fabricating torque joints |
| 05/04/1999 | US5899106 Process for manufacturing a shaped metal can |
| 05/04/1999 | US5899105 Process for manufacturing a shaped metal can |
| 04/28/1999 | CN1214973A Small diemter thin-wall metal shaped-pipe forming method |
| 04/15/1999 | WO1999017895A1 Method & apparatus for forming features in cans |
| 04/07/1999 | EP0906800A1 Method and device for making a hollow shaft having radial bulges by internal high pressure forming |
| 04/07/1999 | EP0906798A2 Method of manufacturing a reservoir tube |
| 04/01/1999 | WO1999015390A1 Method for manufacturing a tubular sheet metal beam having corbelled-out end sections and a sheet metal beam manufactured in accordance with the method |
| 03/17/1999 | CN1211312A Heat exchanging tube for absorber and method of manufacturing same |
| 03/10/1999 | EP0900131A1 Structuring process that stiffens and protects the surface of thin material webs |
| 03/10/1999 | CN2309908Y Mill for making thick wall, large diameter corrugated pipe and furnace chamber |
| 02/11/1999 | WO1999006164A1 Method for ironing spline teeth in pressed stepped sheetmetal and sheetmetal clutch drum formed by same |
| 01/07/1999 | WO1999000199A1 Powershift clutch and method of forming same |
| 01/05/1999 | US5855137 Method of manufacturing a reservoir tube |
| 12/09/1998 | EP0882939A1 Heating tube for absorber and method of manufacturing same |
| 11/17/1998 | US5836070 Method and forming die for fabricating torque joints |
| 11/04/1998 | CN1197700A Device for annularly corrugating tube |
| 11/03/1998 | US5829297 Press apparatus for forming gear teeth |
| 10/15/1998 | DE19820472A1 Profiled hollow body |
| 09/16/1998 | EP0864383A1 Apparatus for forming annular corrugations in tubes |
| 08/19/1998 | CN2288027Y Shaping mechanism for aluminium blast pipe making machine |
| 08/18/1998 | US5794475 Apparatus and process for manufacturing profiled bodies |
| 07/28/1998 | US5784918 Method and apparatus for swaging metallic embossed pipes |
| 06/23/1998 | US5768934 Outer joint part produced as a formed plate metal part |
| 06/18/1998 | WO1998026239A1 Heating tube for absorber and method of manufacturing same |
| 06/16/1998 | US5765419 Method and apparatus for a rolling of hollow articles |
| 06/11/1998 | WO1998025051A1 Device for converting rotary motion into reciprocating motion |
| 04/22/1998 | CN2279226Y Bellows forming machine |
| 04/15/1998 | CN1178727A Tube bending device for refrigerant guide tube of refrigerator |
| 03/12/1998 | DE19711697A1 Forming machine with frame headstock and workholding tailstock |
| 02/04/1998 | CN1171987A Method and device for extrusion forging metal floral pipe concave decorative pattern |
| 01/20/1998 | US5709118 Press apparatus for forming gear teeth |
| 01/06/1998 | US5704240 Method and apparatus for forming threads in metal containers |
| 12/17/1997 | CN1167660A Bending apparatus for obtaining spiral pipe |
| 12/09/1997 | US5694802 Apparatus for forming snap ring groove in clutch drum |
| 12/04/1997 | WO1997045216A1 Method and forming die for fabricating torque joints |
| 12/04/1997 | CA2255972A1 Method and forming die for fabricating torque joints |
| 12/03/1997 | EP0693008B1 Stiffening bulging |
| 10/30/1997 | WO1997039846A1 Structuring process that stiffens and protects the surface of thin material webs |
| 10/22/1997 | CN2265256Y Device for working inner spiral line of pipe material |
| 10/01/1997 | CN1160845A Process for producing flat heat exchanger tubes |
| 10/01/1997 | CN1160611A Corrugated pipe rolling method and equipment |
| 08/26/1997 | US5660593 Outer joint part produced as a formed plate metal part |
| 07/09/1997 | EP0782891A2 Method of making corrugated tubes |
| 07/02/1997 | EP0781610A2 Process for producing flat heat exchange tubes |
| 06/25/1997 | EP0780244A2 Rim and its manufacturing method |
| 06/03/1997 | US5634367 Press forming device |