| Patents for B21D 15 - Corrugating tubes (1,257) |
|---|
| 04/09/1997 | CN1146935A Rolling apparatus and technique for multi-start spirally grooved tube and axial grooved tube |
| 03/12/1997 | EP0761338A1 Method and apparatus for the production of profiled articles |
| 02/26/1997 | CN1034108C Manufacture method of integral moulded splined hub |
| 01/29/1997 | CN1141408A Bellows pipe and method of mfg. same |
| 01/09/1997 | WO1997000741A1 Method of molding metal bellows for bulging process, and metal bellows molding apparatus |
| 01/08/1997 | CN2244439Y Rolling shaper for bellows |
| 01/01/1997 | CN2243946Y Stainless steel checkered pipe forming machine |
| 12/19/1996 | DE19623453A1 Press arrangement for shaping teeth on discs or drums |
| 12/18/1996 | CN1033563C Single-forming mould for square-section helical tubes |
| 12/04/1996 | EP0697927B1 Container beading |
| 11/21/1996 | DE19517797A1 Tappet for IC engine valve drive |
| 10/30/1996 | CN1134324A Processing method and equipment for recess knurling tube |
| 09/25/1996 | EP0733414A1 Method of manufacture of a metal container in form |
| 09/25/1996 | EP0733413A1 Method to produce a formed metal can body |
| 09/22/1996 | CA2172228A1 Method for making a metal box |
| 09/22/1996 | CA2172227A1 Method for making a metal box |
| 08/28/1996 | EP0728540A2 Method of and tool for shaping sheet metal |
| 08/21/1996 | CN2233292Y Prestressed flat corrugated tube making machine |
| 08/14/1996 | CN2232808Y Aluminium wind pipe maker |
| 08/14/1996 | CN2232807Y Extension aluminium wind pipe maker |
| 08/08/1996 | DE19602137A1 Manufacturing device for twisted pipes |
| 08/01/1996 | DE19502918A1 Device for continuous mfg. of seam-welded helically or annularly corrugated pipes |
| 06/26/1996 | CN1125165A Method and device for producing convex groove wave-form pipe |
| 06/05/1996 | CN1123720A Method and apparatus for manufacturing metal flat spiral corrugated pipe |
| 06/04/1996 | US5522247 Method and apparatus for manufacturing a corrugated tube |
| 04/10/1996 | CN1119971A Manufacture method of integral moulded splined hub |
| 03/20/1996 | CN1118721A Press forming device |
| 02/28/1996 | EP0697927A1 Container beading |
| 02/28/1996 | CN1117408A Method and equipment for mfg. metallic spiral corrugated pipe |
| 01/24/1996 | EP0693008A1 Stiffening bulging |
| 12/27/1995 | EP0688617A1 Method and device for rolling of hollow work pieces |
| 12/14/1995 | DE4430733C1 Method of manufacturing rotationally symmetrical workpiece from tubular blank |
| 11/29/1995 | CN2213587Y Continous soft forming die of bellows |
| 11/22/1995 | EP0664862A4 Manufacture of helically corrugated conduit. |
| 11/22/1995 | CN1112036A Technique and special apparatus for working superlong inside ribbed pipe |
| 10/31/1995 | US5461767 Manufacturing method of metal bellows |
| 10/19/1995 | WO1995027576A1 Forming grooves in a tubular member |
| 09/13/1995 | CN2207242Y Metal tube inner surface spiral groove shaping apparatus |
| 08/15/1995 | CA2082238C Process and apparatus for the continuous production of helical or annular corrugated metal tubes |
| 08/02/1995 | EP0664862A1 Manufacture of helically corrugated conduit |
| 07/05/1995 | EP0661117A1 Manufacturing method of metal bellows |
| 06/13/1995 | US5423201 Apparatus for continuously shaping a metal tube |
| 06/07/1995 | CN2199826Y Metal bellows forming mechanism by rubber expanding method |
| 05/17/1995 | CN2197143Y Forming tool for forming pipe trough |
| 03/30/1995 | DE4408371C1 Outer part of a joint, said part being manufactured as a sheet-metal formed part |
| 03/30/1995 | DE4332483A1 Method for producing items of jewellery |
| 03/28/1995 | US5400636 Fluting machine and method of producing a fluted pole |
| 03/16/1995 | DE4330974A1 Component in the form of a bar, and process and arrangement for the production thereof |
| 03/14/1995 | US5396789 Procedure for manufacturing corrugated tubes |
| 02/01/1995 | EP0636432A1 Method for the production of helically or annularly corrugated tubes |
| 01/18/1995 | CN1097360A Apparatus for producing thin metallic tubd |
| 01/17/1995 | CA1333974C Apparatus for altering the cross-sectional shape of can bodies |
| 01/16/1995 | CA2128166A1 Process for producing corrugated tube and product produced thereby |
| 01/03/1995 | US5377401 Process for manufacturing a metallic tank |
| 12/27/1994 | CA1333652C Method of forming a screw thread and tubular body with a screw thread |
| 11/23/1994 | CN1095317A Forging, moulding techenology for metal pipe |
| 11/22/1994 | US5365763 Device for shaping of helical fins on the outer wall of a tube |
| 11/09/1994 | EP0623404A2 Pipe, pipe connector, method for their manufacture and device for holding pipes |
| 11/09/1994 | CN2182009Y Internal screwed tube planetary differential speed spin-pull device |
| 10/13/1994 | WO1994022612A1 Stiffening bulging |
| 10/13/1994 | CA2160000A1 Dent profiling |
| 10/12/1994 | CN2179212Y Helical tube roller |
| 08/17/1994 | CN2174275Y Expansion section of sylphon bellow with circular pressure-bearing ring cross section |
| 07/13/1994 | CN1089192A Can with beading zone-chatenay 265 |
| 07/05/1994 | US5325693 Apparatus for the continuous production of helical or annular corrugated metal tubes |
| 06/14/1994 | US5320331 Method and apparatus for forming corrugations in tubing and a corrugated tube produced thereby |
| 06/08/1994 | CN2167797Y Corrugation forming machine |
| 05/11/1994 | WO1994009926A1 Container beading |
| 05/04/1994 | CN2163701Y Device for making metallic corrugated tubes |
| 05/04/1994 | CN1024398C Apparatus for altering cross-sectional shape of can bodies |
| 03/31/1994 | WO1994007071A1 Manufacture of helically corrugated conduit |
| 03/02/1994 | CN2157840Y Expanding head with spiral lines |
| 02/23/1994 | CN2156961Y Rounding type expanding mould |
| 02/09/1994 | EP0582562A1 Device for continuous forming of a metallic tube |
| 02/09/1994 | EP0582501A1 Manufacturing method of a metallic vessel |
| 11/10/1993 | EP0569307A1 Device for forming helical fins on the external wall of tubes |
| 11/10/1993 | CN2145659Y Screwed pipe roller press |
| 10/27/1993 | EP0567278A1 Mandrel loading method and apparatus in a thermal sizing-annealing process |
| 10/06/1993 | CN1022294C Formation method for reducing guide pipe |
| 09/28/1993 | CA1322493C Apparatus for forming and cutting spiral pipe |
| 08/03/1993 | US5231863 Mandrel loading method and apparatus in a thermal sizing-annealing process |
| 08/03/1993 | US5231859 Fluting machine |
| 06/09/1993 | CN2135413Y Spiral bellows shaping device |
| 05/18/1993 | US5211046 Method for forming multistage hollow pipe |
| 04/28/1993 | CN2130614Y Bellows former |
| 03/24/1993 | CN1020151C Method and equipment for processing corrugated tube |
| 01/20/1993 | EP0523361A1 Pipe with ribs and method for making the same |
| 12/09/1992 | CN1019373B Tub with continous reinforced ribs and apparatus for forming continous reinforced ribs |
| 11/11/1992 | EP0512426A1 Method and device for making threads on polygonal tubes |
| 09/29/1992 | US5150594 Machine for beading cylindrical cans or can bodies |
| 08/12/1992 | CN1063431A Single-forming mould for square-section helical tubes |
| 07/29/1992 | CN2111150U Metal hard bellows pressing machine |
| 07/10/1992 | CA2055314A1 Bellows pipe construction and method of manufacture |
| 05/14/1992 | DE4035892A1 Forming helical corrugations in tube - involves rotating tube between successive storkes of corrugation-forming rams |
| 03/25/1992 | CN1059677A Processing method and equipment corrugated pipe |
| 01/23/1992 | DE4022722A1 Pipe connection with fixture flange - has female sleeve, annular groove, elastomeric expander, tension rings and raised annular ridge |
| 12/24/1991 | US5074138 Expandable-contractible |
| 10/22/1991 | US5058409 Apparatus for manufacturing wrinkled pipes |
| 10/15/1991 | US5056346 Method and device for manufacturing bellows pipe |
| 08/12/1991 | CA2009868A1 Machine for roll-forming a corrugated cylindrical sheath |