| Patents for B21D 51 - Making hollow objects (8,973) |
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| 06/11/1991 | US5022254 Method and device for the manufacture of can bodies by extension, including expansion of the diameter and reduction of the thickness of the sheet metal, starting out from a can body with smaller diameter, made of thicker sheet metal |
| 06/05/1991 | WO1991008544A1 Apparatus and method for detecting faults in can end sealant depositing machine |
| 06/05/1991 | CN1051893A Tub with continous reinforced ribs and apparatus for forming continous reinforced ribs |
| 06/05/1991 | CN1051875A Apparatus for rounding and conveying onwards sheet-metal blanks for can bodies |
| 06/05/1991 | CA2070644A1 Apparatus and method for detecting faults in can end sealant depositing machine |
| 06/04/1991 | US5020955 Method of manufacturing a closure unit made of sheet metal or plating and container having a closure unit obtained thereby |
| 06/04/1991 | US5020218 Method for manufacturing a refrigerator cold head housing |
| 05/28/1991 | US5018379 Apparatus and method for crimping end of can body |
| 05/22/1991 | EP0428190A1 Method for producing a cylindrical metal container |
| 05/21/1991 | US5017072 Dual lane conversion system |
| 05/21/1991 | US5016775 Bung-type container |
| 05/21/1991 | US5016769 Closure with high energy button |
| 05/21/1991 | US5016463 Apparatus and method for forming can bottoms |
| 05/21/1991 | US5016457 Method of forming metal |
| 05/15/1991 | CN1051323A Method and apparatus for forming drum closure |
| 05/14/1991 | US5014536 Method and apparatus for drawing sheet metal can stock |
| 05/14/1991 | US5014491 Apparatus for seaming can end |
| 05/08/1991 | EP0426258A1 Method and apparatus for manufacturing metal can bodies having an internal coating |
| 05/08/1991 | EP0425704A1 Manufacture of drawn/ironed can |
| 05/08/1991 | DE4031825A1 Guidance system ensures cylindrical shape of welded can bodies - by using Z=shaped grooves and rollers to overlap longitudinal edges of body prior to welding |
| 05/07/1991 | US5012942 Easily cut aluminium closure capsule |
| 05/07/1991 | CA1283882C Conveyor device for can bodies in a can welding machine |
| 05/02/1991 | EP0425401A1 Easy-open metal cover for a container |
| 05/02/1991 | DE3935666A1 Prodn. of deep drawn pressings to precise dimensions - by upsetting blank to produce rim of increased thickness |
| 04/28/1991 | CA2028545A1 Easy opening metal covers for containers |
| 04/25/1991 | DE4026444A1 Variable low-pressure sequential-return force cap lift |
| 04/24/1991 | EP0215906B1 Drawn can body method, apparatus and products |
| 04/16/1991 | US5007150 Apparatus for the application of a gasket inside closures comprising a cup, such as screw-on and crown caps |
| 04/09/1991 | US5005728 End shape modification to reduce end hook wrinkling |
| 04/09/1991 | CA1282645C Method and apparatus for forming drum closure |
| 04/09/1991 | CA1282585C Pin oven louver design |
| 04/02/1991 | CA1282366C Method and apparatus for orientating can ends |
| 03/20/1991 | EP0417436A1 Two-piece metal can for beverages |
| 03/19/1991 | US5000370 Method and apparatus for the production of frusto-pyramidal can bodies |
| 03/19/1991 | CA1281516C Device for applying a viscous sealant in annular form on to a substantially flat surface, specifically to a can end |
| 03/13/1991 | CN1049808A Multiplicate winding machine and winding method using expansive chuck |
| 03/12/1991 | CA1281241C Metal packaging can and method of making it |
| 03/07/1991 | WO1991002685A1 Closure and access systems for containers and methods of manufacture and use |
| 03/06/1991 | CN1011865B Method for producing shell of metal jar |
| 03/05/1991 | US4996865 Apparatus for forming one-piece metal can bodies |
| 03/05/1991 | CA1280942C Reducing the diameter of tubular bodies |
| 02/27/1991 | EP0413955A2 Device for rounding and conveying on sheet blanks for can shells |
| 02/26/1991 | US4995254 Method and apparatus for ensuring the dimensional accuracy of a frusto-pyramidal can body |
| 02/26/1991 | CA1280701C Method and apparatus for forming end panels for containers and end panels formed thereby |
| 02/19/1991 | US4994009 Easy open can end method of manufacture |
| 02/19/1991 | US4993145 Apparatus for gripping tubes in multirow plate fin coils |
| 02/13/1991 | EP0412166A1 Thickness-reduced deep-draw-formed can |
| 02/13/1991 | CN1049116A Multifold sealing machine and multifold sealing method |
| 02/12/1991 | US4991735 Pressure resistant end shell for a container and method and apparatus for forming the same |
| 02/07/1991 | WO1991001188A1 Improvements in or relating to metal deformation |
| 02/06/1991 | EP0411758A1 Containers and method and apparatus for their manufacture |
| 02/06/1991 | EP0411308A1 Two or three piece container especially from sheet metal |
| 02/05/1991 | US4989434 Method and apparatus for doming can bottoms |
| 01/30/1991 | EP0410884A1 Metallic thin walled high pressure bottles reinforced with a carbon fibre based winding and process for manufacturing |
| 01/30/1991 | CN2070211U Precision circle rolling machine for thin plate bucket |
| 01/29/1991 | US4987761 Method of forming a device including an integrally formed nut |
| 01/24/1991 | WO1991000830A1 Improved gasket configuration for an aerosol container closure |
| 01/23/1991 | CN1048669A Technology for producing packing drum of rosin |
| 01/22/1991 | CA1279228C Process for producing a folded rim |
| 01/16/1991 | EP0408268A2 Method and apparatus for manufacturing a ring for a container closure |
| 01/02/1991 | CN2068432U Mark mould set for easy-to-open cover |
| 12/27/1990 | EP0404654A1 Manufacturing process for a controlled opening closure element for a metal can; closure element obtained by this method; and can utilizing this closure |
| 12/27/1990 | EP0404420A1 Process for production of covered deep-drawn can |
| 12/25/1990 | US4980094 Methods and apparatus for closing and charging radioactive waste containers |
| 12/25/1990 | US4979282 A process for forming plastic liners |
| 12/20/1990 | DE4000202C1 Bottle closure for carbonated drinks - has round cover section and cylindrical jacket section with deep drawn transition section in between |
| 12/19/1990 | EP0402511A1 Apparatus for drawing-in sheet metal cylinders, in particular can shells |
| 12/18/1990 | US4977772 Method and apparatus for forming reforming and curling shells in a single press |
| 12/11/1990 | US4976675 Automatic machine for folding flat pre-creased die-cuts into tubular shape |
| 12/11/1990 | US4976131 Can body making apparatus |
| 12/11/1990 | CA1277549C Method and apparatus for transferring relatively flat objects |
| 12/04/1990 | US4975132 Plastic closures for containers and cans and methods and apparatus for producing such closures |
| 12/04/1990 | US4974439 Controlled transfer of sheet metal can bodies in can body line |
| 12/04/1990 | CA1277259C Drawn can body methods, apparatus and products |
| 12/04/1990 | CA1277183C Method for making a rolled lip container |
| 11/29/1990 | WO1990014179A1 Manufacture of drawn/ironed can |
| 11/28/1990 | EP0399969A1 Packaging tube and its method of manufacture |
| 11/28/1990 | EP0299013A4 Disc removal end wall structure with safety features |
| 11/28/1990 | CN1047232A Die assembly for and method of forming metal end unit |
| 11/27/1990 | US4972568 Method and apparatus for forming drum closure |
| 11/22/1990 | EP0398529A1 Die assembly for and method of forming metal end unit |
| 11/22/1990 | EP0398051A1 Method and device for positioning a can body |
| 11/22/1990 | EP0397919A2 Production apparatus for producing external can of dry element battery |
| 11/22/1990 | EP0397795A1 Apparatus for forming can bottoms |
| 11/22/1990 | EP0397750A1 Dual lane conversion system. |
| 11/21/1990 | CN2065958U Container-restoring machine |
| 11/20/1990 | US4971215 Nesting drums |
| 11/15/1990 | DE3915765A1 Mfr. process for twin-chamber pressure pack - involves inner and other bodies with turned-in flanged edge |
| 11/04/1990 | WO1990013490A1 Methods of and apparatus for making container or cans |
| 10/31/1990 | EP0394282A1 Z-bar for forming can material. |
| 10/31/1990 | CN2064690U Tripping and cover extirpation machine for metal pot |
| 10/31/1990 | CN1010188B Method and apparatus for forming end panels for containers and end panels formed thereby |
| 10/31/1990 | CN1010187B Method and apparatus for forming container end panels |
| 10/23/1990 | CA1275454C Method and apparatus for connecting a hollow member to an inner member |
| 10/17/1990 | EP0393011A1 Procedure for making a friction ring for clutches or brakes with a sintered friction lining |
| 10/17/1990 | EP0392866A2 Apparatus for seaming can ends |
| 10/10/1990 | EP0391863A1 Seaming equipment for securing the ends of tins, cans and similar metal containers, in particular cans for foodstuff |
| 10/09/1990 | US4961300 Can seamer |
| 10/04/1990 | DE3837567A1 Capacitor cup housing |
| 10/04/1990 | CA2013870A1 Seaming equipment for securing the ends of tins, cans and similar metal containers, in particular cans for foodstuffs |