| Patents for B21D 39 - Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders (11,420) |
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| 02/05/1991 | US4989443 Crimping apparatus |
| 02/05/1991 | US4989308 Bidirectional roof seaming machine |
| 01/24/1991 | DE4009813C1 Overlapping single metal components - are located on circular recess on matrix with groove ring along box of recess |
| 01/24/1991 | DE3923182A1 Joining metal sheets together - involves punch and undercut die to cause sheets to interlock |
| 01/23/1991 | CN2069762U Double-bearing rearward shifting mechanical tube expander for heat exchanger |
| 01/22/1991 | US4986691 Strip locking joint & method of making same |
| 01/22/1991 | US4986461 Method of constructing tools intended for use in work carried out with the aid of shock-wave generating energy sources |
| 01/22/1991 | US4986230 Method of joining cylinder bore liners to an engine block |
| 01/22/1991 | US4985975 System for attaching a fitting to a tube |
| 01/16/1991 | EP0407443A1 Bending apparatus. |
| 01/16/1991 | CN2069317U Flat bellows moulding mechanism |
| 01/09/1991 | EP0406935A1 Method and device for attaching shackles to the sideboards of trucks |
| 01/09/1991 | EP0406301A1 Bending apparatus. |
| 01/09/1991 | EP0406300A1 Bending apparatus. |
| 01/08/1991 | US4982487 Sealing a beaded top |
| 01/08/1991 | CA1278805C Method and apparatus for reinforcing a hook to rail connection for scaffolds or the like |
| 01/08/1991 | CA1278709C Method for producing a tungsten carbide tip punch |
| 01/08/1991 | CA1278698C Anchor apparatus for a tendon in prestressed concrete slab |
| 01/03/1991 | DE3920013A1 Repair of cracked tube of heat exchanger - using bush made from memory metal, expanded by heating via electric element |
| 01/02/1991 | EP0405172A1 Single peak radial texture zircaloy tubing |
| 12/19/1990 | CN1047818A Microcomputerized controller for electric tube-expander |
| 12/13/1990 | DE3925963C1 Galvanised sheet panels for thin wall ducting - are formed from identical lengths cut from strip and then joined into new strip from which panels are cut |
| 12/13/1990 | DE3916817A1 Joining two pref. metal sheets stacked on die using stamp - by driving material from top sheet into torn regions of bottom sheet created by downward action of stamp |
| 12/11/1990 | US4976027 Device for lining a peripheral tube of a steam generator |
| 12/11/1990 | US4976023 Method of installing and sizing a bushing in a shaft |
| 11/28/1990 | EP0399979A2 A combustion engine push rod and a method of manufacturing said push rod |
| 11/28/1990 | EP0398959A1 A method for joining two or several overlaying sheet formed members together, metal or non-metal, and an apparatus for carrying out the method. |
| 11/27/1990 | US4972571 Method of making a ladder |
| 11/27/1990 | US4972565 Tool set for connecting sheet metal pieces |
| 11/22/1990 | EP0398025A1 Clinch type fastener structure and tooling |
| 11/22/1990 | DE3916225A1 Forming grooves in bore of heat exchange tube - involves tool with convex longitudinal profile with oblique grooves |
| 11/21/1990 | WO1990014180A1 Folding machine, especially for jointing the edges of metal sheets by folding |
| 11/21/1990 | CA2058295A1 Folding machine especially for jointing the edges of metal sheets by folding |
| 11/20/1990 | US4970886 Stretch shaping method and apparatus |
| 11/20/1990 | CA1276573C Reinforcing ring construction for containers |
| 11/15/1990 | DE4008642A1 Tube expander or dent remover - has mandrel with hinged jaws which are forced apart by nut and screwed spindle |
| 11/07/1990 | EP0395859A1 Washing machine drum |
| 11/06/1990 | US4967617 Composite shaft with integral drive elements |
| 10/31/1990 | EP0394531A1 Seaming machine |
| 10/24/1990 | CN1046298A Anti-recking means for cargo container doors |
| 10/17/1990 | EP0392051A1 Process and arrangement for fastening an alignment pin |
| 10/17/1990 | CN1046107A Universal valve, tube-fitting expansion pressure forming process |
| 10/10/1990 | EP0391863A1 Seaming equipment for securing the ends of tins, cans and similar metal containers, in particular cans for foodstuff |
| 10/03/1990 | EP0390504A1 Coupling arrangements |
| 10/03/1990 | EP0390047A1 Method for connection of pipe ends and similar |
| 10/02/1990 | CA1274699A1 Method of fastening drive elements on a hollow shaft |
| 09/26/1990 | EP0389070A2 Method and apparatus for assembling camshafts |
| 09/26/1990 | CN1009711B Method and apparatus for fixing section to hollow object |
| 09/19/1990 | EP0388117A1 Method and apparatus for pull-through blind installation of a tubular member |
| 09/19/1990 | EP0387678A1 Heat exchanger and process for the watertight fixation of heat exchange elements to an end plate |
| 09/18/1990 | US4956904 Device for joining piping materials |
| 09/17/1990 | CA2012152A1 Method and apparatus for pull-through blind installation of a tubular member |
| 09/12/1990 | EP0385975A1 Air cargo container and method for forming side panels thereof. |
| 09/12/1990 | EP0313565B1 Method for production of a camshaft |
| 09/12/1990 | EP0291003B1 Hollow plag for sealing a heat exchanger tube |
| 09/12/1990 | CN1009570B Camshaft and method for its production |
| 09/11/1990 | CA1273845A1 Explosive charges |
| 09/05/1990 | CN1009481B Assembling camshaft |
| 09/04/1990 | US4953383 Crimping device, adjusting ring therefor |
| 08/29/1990 | EP0384100A2 Power driven pliers-type tool holder for handling devices |
| 08/29/1990 | EP0383993A1 Component for a multiple-layer construction of flat material, in particular for motor vehicles |
| 08/29/1990 | EP0383863A1 Radial press for essentially cylindrical workpieces. |
| 08/23/1990 | DE3936967A1 Forming press for joining components |
| 08/22/1990 | EP0382847A1 Power drive |
| 08/21/1990 | CA1272892A1 Tube sheet welding |
| 08/18/1990 | CA2009893A1 Component of a multilayer, flat material construction, in particular for motor vehicles |
| 08/16/1990 | EP0381880A1 Explosively welding sleeves to inner surfaces of tubes |
| 08/09/1990 | CA2005264A1 Hose crimper |
| 08/08/1990 | EP0381603A1 Method for making a tight joint between rigid pipes, and joint obtained thereby |
| 07/31/1990 | US4944173 Probe for hydraulic expansion, including centering device |
| 07/10/1990 | US4940375 Clinch type fastener structure and tooling |
| 07/10/1990 | US4939827 Method of manufacturing a bearing device including a housing with a flange at one end thereof and a bearing bush press-fitted thereinto |
| 07/04/1990 | EP0376136A2 Swaging tool |
| 07/03/1990 | US4938051 Method of forming a drum or pail closure |
| 06/28/1990 | DE3842721A1 Flanging device with a hand former |
| 06/27/1990 | EP0374726A2 Method for placing and drawing |
| 06/27/1990 | EP0374580A2 Assembled shaft |
| 06/27/1990 | EP0374407A2 Assembling method |
| 06/27/1990 | EP0374393A2 Method of making connections |
| 06/27/1990 | CN1008515B Apparatus for winding-up of cross-ribs |
| 06/26/1990 | US4936130 Apparatus for altering the cross-sectional shape of can bodies |
| 06/20/1990 | EP0373843A2 Tubular joint |
| 06/19/1990 | US4934552 Sealed vessel and a process for producing the same |
| 06/19/1990 | US4934038 Method and apparatus for tube expansion |
| 06/06/1990 | CN1008242B Cu-al pipe-cold welding process for vapourizer of refrigerator |
| 06/05/1990 | US4930338 Pipe expanding mandrel |
| 06/05/1990 | US4930326 Manual hose end crimper |
| 06/05/1990 | US4930203 Clinching tool |
| 05/29/1990 | US4928388 Single station hemming tooling |
| 05/29/1990 | US4928375 Method of forming a hollow fastener from sheet metal |
| 05/29/1990 | US4928370 Tool set for connecting superposed sheet metal work pieces |
| 05/23/1990 | DE3839308A1 Pipe-forming device that can be introduced into a pipe conduit |
| 05/23/1990 | CN1042401A Crankshaft with hollow journal and method for making same |
| 05/23/1990 | CN1042400A Bond hollow part |
| 05/17/1990 | DE3937569A1 Falzwerkzeug Folding tool |
| 05/15/1990 | US4925220 Tubular joint |
| 05/09/1990 | EP0366989A2 Hollow composite member |
| 05/09/1990 | EP0366987A1 Device for clinch joints |
| 05/09/1990 | EP0366912A2 Crankshaft with hollow cranks |
| 05/09/1990 | EP0366910A2 Assembled crankshaft |