| Patents for B21D 15 - Corrugating tubes (1,257) |
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| 06/05/1991 | CN1051893A Tub with continous reinforced ribs and apparatus for forming continous reinforced ribs |
| 05/22/1991 | EP0428355A2 Method and apparatus for forming ducting |
| 05/15/1991 | EP0427542A2 Ribbed and grooved tube forming |
| 05/15/1991 | CN1051317A Formation method for reducing guide pipe |
| 04/16/1991 | US5007267 Method and apparatus for manufacturing bellows pipe |
| 03/05/1991 | US4996857 Method and an apparatus for manufacturing a metallic bellows |
| 01/16/1991 | CN2069316U Bellows processing device |
| 10/31/1990 | EP0395042A2 A method and an apparatus for manufacturing a metallic bellows |
| 08/29/1990 | EP0384625A1 Apparatus for forming spiral pipe |
| 08/28/1990 | US4951493 Method and apparatus for making a spiral pipe |
| 08/01/1990 | EP0379977A1 Cable drum |
| 08/01/1990 | CN1009038B Multi-core power cable for drilling machine set |
| 07/27/1990 | CA2008302A1 Drum for receiving a rope |
| 06/26/1990 | US4936130 Apparatus for altering the cross-sectional shape of can bodies |
| 05/15/1990 | US4924684 Apparatus for forming and cutting spiral pipe |
| 03/14/1990 | EP0357910A2 Superconductive elongate material made of a coated corrugated metal pipe |
| 02/28/1990 | EP0356269A2 Method and device for producing barrel drums |
| 12/13/1989 | CN1037853A Apparatus for altering cross-sectional shape of can bodies |
| 12/06/1989 | EP0344570A2 Method and apparatus for making a spiral tubing |
| 11/08/1989 | EP0340368A1 Apparatus for making grooves on a workpiece |
| 09/27/1989 | EP0334295A2 Method and apparatus for shaping tubular bodies |
| 09/20/1989 | EP0332801A2 Apparatus for changing the cross-sectional shape of can blanks |
| 08/01/1989 | US4852380 Method and device for shaping by hammering a corrugated tube and the application thereof to tubes for the automobile industry |
| 05/09/1989 | US4827747 Method for producing a bellows with oval cross section and apparatus for carrying out the method |
| 01/11/1989 | EP0298832A1 Method and apparatus for forming a corrugated tube by hammering and its application to tubes for the automobile industry |
| 01/10/1989 | US4796693 Finned tube with indented groove base and method of forming same |
| 11/29/1988 | CA1245514A1 Method and apparatus for the corrugating of metal tubes |
| 11/09/1988 | CN88102405A Corrugated pipe shaping machine |
| 11/02/1988 | CN88210280U Bellows forming seal set |
| 10/20/1988 | DE3710958A1 Process and device for the production of flexible pipelines |
| 09/21/1988 | CN87216770U Corrugated pipe forming machine |
| 08/30/1988 | CA1241394A1 Multi-wire electric power cable, particularly a supply cable for borehole units |
| 08/30/1988 | CA1241393A1 Multi-wire electric power cable, particularly a supply cable for borehole units |
| 07/20/1988 | EP0274719A2 Thread-forming method and tubular body provided with a thread |
| 07/06/1988 | CN87210701U Carbon steel bellows apparatus |
| 07/05/1988 | US4754634 Device for forming bead to pipe |
| 06/08/1988 | EP0144348B1 Method and apparatus for producing spacers or blocks primarily for use in load pallet structures |
| 06/07/1988 | US4749823 Multi-wire electric power cable, particularly a supply cable for borehole units |
| 03/09/1988 | CN87104896A Multi-core power cable and power supply cable esp. for drilling machine set |
| 03/02/1988 | CN87104691A Forming apparatus for forming pipe end for pipe fitting |
| 02/11/1988 | DE3627121A1 Method and apparatus for the production of single- or multiple-start internal threads in pipes |
| 01/07/1988 | EP0250838A2 Method for producing a bellows with a cross section of elliptical, egg-shaped, shaped as two equal semicircles connected by two parallel straight lines, non circular ring or polygonal roundes form. |
| 10/21/1987 | EP0151590B1 A security system for safes |
| 06/24/1987 | EP0118451B1 Method for the manufacture of a conical tubular member, and a member manufactured according to the method |
| 05/27/1987 | DE3540684A1 Multi-core electrical power cable, in particular supply cable for well-head equipment |
| 05/20/1987 | EP0222100A2 Finned tube with a notched groove bottom and method for making it |
| 05/12/1987 | US4663954 Method and apparatus for the corrugating of metal tubes |
| 05/05/1987 | US4662143 Method for the manufacture of a conical tubular member, and a member manufactured according to the method |
| 03/31/1987 | CA1219935A1 Security system for safes |
| 03/17/1987 | US4649833 Security system for safes |
| 02/24/1987 | US4644770 Method and apparatus for producing spacers or blocks primarily for use in load pallet structures |
| 11/25/1986 | US4624122 Machine for the manufacture of tubes deformed to provide a helicoidal profile for heat exchangers and similar applications |
| 11/11/1986 | US4621541 Apparatus for changing rotational speed with the aid of clutching activity |
| 05/27/1986 | CA1204923A1 Method for the manufacture of a conical tubular member, and a member manufactured according to the method |
| 04/16/1986 | EP0178236A1 Apparatus for making corrugated tubes for heat exchangers, and similar applications |
| 03/10/1986 | CN85103995A Method and apparaturs for manufacturing corrugated metal tube |
| 01/28/1986 | US4566300 Method for the manufacture of a conical tubular member |
| 01/07/1986 | US4562630 Method for the manufacture of heat exchanger elements |
| 12/24/1985 | CA1198321A1 Thin-wall sleeve forming |
| 12/03/1985 | CA1197364A1 Method of making poly-v pulleys |
| 10/14/1985 | EP0151590A4 A security system for safes. |
| 09/03/1985 | US4538439 Cans formed of thin-walled material and apparatus for forming precise fine beads therein |
| 08/21/1985 | EP0151590A1 A security system for safes. |
| 08/07/1985 | EP0150906A2 Helical dowel |
| 06/19/1985 | EP0144348A1 Method and apparatus for producing spacers or blocks primarily for use in load pallet structures. |
| 05/07/1985 | US4514997 Tube corrugating die |
| 04/30/1985 | US4513601 Method for locally deforming a round tube into a tube comprising planar surfaces and a forming punch for carrying out said method |
| 01/31/1985 | WO1985000400A1 A security system for safes |
| 12/25/1984 | US4489588 Apparatus for manufacturing screw workpieces of a tube semi-product |
| 10/25/1984 | WO1984004082A1 Method and apparatus for producing spacers or blocks primarily for use in load pallet structures |
| 09/19/1984 | EP0118451A1 Method for the manufacture of a conical tubular member, and a member manufactured according to the method. |
| 09/11/1984 | US4470290 Thin-wall sleeve forming |
| 09/11/1984 | CA1174120A1 Apparatus for corrugating pipes |
| 06/26/1984 | US4455853 Method of making poly-V pulleys |
| 06/12/1984 | US4453304 Field effect transistors |
| 03/14/1984 | EP0102407A1 Finned tube with internal projections and method and apparatus for its manufacture |
| 03/13/1984 | US4435968 Apparatus for corrugating pipes |
| 03/06/1984 | US4434645 Apparatus for the radial shaping of tubular articles |
| 02/01/1984 | EP0099737A2 Forming helical grooves in tubes |
| 01/03/1984 | CA1159720A1 Annular corrugator |
| 11/16/1983 | EP0094344A2 Thin-walled cask and tool for making high-precision corrugations |
| 10/26/1983 | EP0092010A1 Shaping of tubes having a turbulence effect for heat exchangers |
| 10/13/1983 | WO1983003374A1 Method for the manufacture of a conical tubular member, and a member manufactured according to the method |
| 09/27/1983 | US4406142 Annular corrugator |
| 06/28/1983 | CA1148795A1 Method of producing a corrugated, multi-ply metal bellows |
| 04/27/1983 | EP0077700A1 Method for the local deforming of round tubes into tubes with flat sides, and die for doing the same |
| 03/22/1983 | US4377083 Tube corrugating apparatus and method |
| 03/16/1983 | EP0074189A2 Thin-wall sleeve forming |
| 03/09/1983 | EP0073652A2 Annular corrugator |
| 01/18/1983 | CA1139619A1 Can beading apparatus |
| 01/04/1983 | US4366691 Apparatus for circumferentially corrugating a tube |
| 12/21/1982 | US4364252 Method for the manufacture of diaphragm bellows |
| 12/14/1982 | CA1137286A1 Method for manufacturing poly-v pulleys |
| 07/20/1982 | US4339936 Annular corrugator |
| 06/29/1982 | US4336702 Method of and apparatus for making spiral tubes |
| 05/25/1982 | US4331014 Can beading apparatus |
| 05/12/1982 | EP0051454A2 Annular corrugator |
| 05/04/1982 | US4327776 Thin-walled metal duct having integral reinforced coupling ends |
| 04/28/1982 | EP0050363A1 Method and device for the manufacture of heat exchanger panels |
| 03/16/1982 | US4319471 Apparatus for producing a corrugated tube |