| Patents for B21D 41 - Application of procedures in order to alter the diameter of tube ends (2,982) |
|---|
| 11/15/1995 | CN1111748A Tube for heat exchanger, method for its shaping and heat exchanger with such tubes |
| 10/19/1995 | DE4412813A1 Tongs for holding together pipework and fittings to be joined |
| 10/17/1995 | US5458393 Space frame apparatus and process for the manufacture of same |
| 10/12/1995 | DE4443839C1 Method for prodn. of actively cooled power plant wall |
| 10/10/1995 | CA2044128C Conductor guide forming machine |
| 09/27/1995 | CN2208459Y Hydraulic flaring and edge folding machine for pipes |
| 09/19/1995 | US5450738 Method and apparatus for forming piping element connections having multiple outward steps |
| 08/31/1995 | DE4403897A1 Method for hot pull-in of the ends of hollow workpieces by rolling |
| 08/10/1995 | DE4403202A1 Press for tubular workpieces |
| 07/26/1995 | EP0664428A1 Heat exchanger tube, process for making same and heat exchanger provided with such tubes |
| 07/20/1995 | DE4400875A1 Method for reshaping tube end into profile |
| 06/14/1995 | CN1028845C Cold stamping forming method |
| 06/07/1995 | EP0656245A2 Clamping device and tube bending press provided with such a vice |
| 06/07/1995 | CN2199827Y Cantilever diminishing pipe machine |
| 05/17/1995 | EP0653256A1 Device for mechanically expanding a pipe or pipe section |
| 05/04/1995 | DE4407261A1 Piston-cylinder unit and method and device for closing a piston-cylinder unit |
| 05/03/1995 | EP0650779A2 A process for shaping the end of a tube with an oblong cross-section to a circular cross-section |
| 04/26/1995 | EP0649689A1 Method and device for making compression fittings |
| 04/20/1995 | DE4437059A1 Apparatus for cutting and/or plastic deformation of metal tubes, particularly for the production of bicycle frames |
| 04/13/1995 | WO1995010000A1 An expanding method and a tool therefor |
| 03/22/1995 | CN1100348A Devices for the grooving of tubes |
| 03/22/1995 | CN1100346A Producing method for ultra-high precision, small bore and extra-thick wall hot-rolled pipe |
| 03/09/1995 | WO1995006530A1 Forming piping connections having multiple outward steps |
| 03/07/1995 | US5394947 Tubular hitch member ball connection for an implement |
| 02/28/1995 | US5392626 Flexible hydraulic expansion mandrel |
| 02/22/1995 | CN1027682C Method and apparatus for prodn. of portable conic container |
| 02/16/1995 | WO1995004616A1 Space frame apparatus and process for the manufacture of same |
| 01/25/1995 | CN2187988Y LG steel cylinder cap bore reducing machine |
| 01/19/1995 | WO1994026437A3 Radial extrusion process combined with inside tube ironing |
| 01/18/1995 | EP0634234A1 Device for grooving tubes |
| 01/18/1995 | CN1097362A Reducing press for cold-drawing pipes |
| 01/17/1995 | US5382151 Tool for cold form flaring tubing ends |
| 01/11/1995 | CN2187082Y Pipe-reducing machine |
| 01/10/1995 | US5379625 Method and apparatus for upsetting the ends of steel pipe |
| 01/05/1995 | DE4339993C1 Apparatus for expanding hollow bodies |
| 12/27/1994 | US5375449 Method for forming hollow nutdrivers from tubing |
| 11/30/1994 | EP0626222A1 Procedure and apparatus for forming a rectangular collar at the end of a pipe |
| 11/24/1994 | WO1994026437A2 Radial extrusion process combined with inside tube ironing |
| 11/10/1994 | DE3050857C2 Heat exchanger |
| 10/26/1994 | CN2180356Y Hydraulic machine for pipe end working |
| 10/26/1994 | CN1026300C Machining method for steel pipe close |
| 10/19/1994 | CN1093625A Spinning closing-in technology and automatic controlling device thereof for high-pressure gas cylinder |
| 10/12/1994 | EP0619153A1 Expander tool for hollow workpieces |
| 10/12/1994 | EP0619152A1 Expansion head for expander for hollow workpieces |
| 10/11/1994 | US5353623 Portable elastomeric hose crimping tool |
| 09/15/1994 | DE4316053A1 Retracting folder fork |
| 08/24/1994 | CN1091070A Sizing method and equipment for spiral welding pipe |
| 08/18/1994 | WO1994018486A1 A method of making a pipe connection and a tool and connector sleeve suitable for use when carrying out the method |
| 08/02/1994 | US5333485 Process for flattening the end section of a tube |
| 06/15/1994 | EP0601349A1 Drillhammer and/or percussion hammer |
| 05/31/1994 | US5315854 Tube tapering apparatus having a variable orifice die |
| 05/25/1994 | EP0598173A2 Device for fixing fittings to pipes |
| 05/17/1994 | US5311661 Method of pointing and corrugating heat exchange tubing |
| 04/12/1994 | US5302795 Welding equipment for fabricating a combustion liner |
| 04/12/1994 | US5301414 Process for shaping a reinforcement on the extremities of the internal casing of an elastic joint, after molding, and its applications |
| 03/30/1994 | EP0589099A1 Method of forming round tubes into profiled tubes with polygonal or other non-circular sections |
| 03/08/1994 | US5291769 Apparatus for forming end portion of pipe |
| 03/01/1994 | US5289714 Device for deforming a smooth surfaced pipe |
| 02/22/1994 | US5287723 Device for deforming a smooth surfaced pipe |
| 02/16/1994 | EP0397875B1 Pipe roller-expanding device |
| 02/02/1994 | CN2154758Y Automatic rotating moulding press |
| 02/01/1994 | US5282375 For reducing the diameter of an open end of a cylindrical container |
| 01/05/1994 | DE4220794A1 Pipe spreader - has tapering end for insertion into pipe end |
| 12/22/1993 | EP0574645A1 A method for fixing heat exchange elements to an end plate and a tool for conforming to a circular cross-section the end of a tube of oblong cross-section |
| 12/22/1993 | CN1079681A Cold stamping shaping method |
| 12/15/1993 | CN2149258Y Device for enlarging tubes |
| 11/23/1993 | US5263355 Necking pliers for pipes and the like |
| 11/18/1993 | EP0570005A2 Spin flow necking apparatus and method of handling cans therein |
| 11/02/1993 | US5257525 Portable slim-line hose fitting crimper |
| 10/06/1993 | CN1022294C Formation method for reducing guide pipe |
| 09/14/1993 | US5243845 Flaring tool for hollow workpieces |
| 09/14/1993 | CA1322151C Device for expanding pipes |
| 08/24/1993 | US5237850 Conveyor rollers and manner of their manufacture |
| 07/22/1993 | DE4200020C1 Hollow, cylindrical workpiece widening tool - has rack teeth on sliding mandrel meshing with teeth on hinged, L=shaped handle |
| 07/20/1993 | US5228323 Flaring tool |
| 06/24/1993 | WO1993011889A1 Hand-tool for widening a pipe end and pipe coupling making use of such a widened pipe end |
| 06/22/1993 | US5220722 Quick height change adjustment for tube expander |
| 06/16/1993 | CN2136084Y Floating arbor type precision diameter reducing mould for thin-walled tube |
| 06/09/1993 | DE4202348C1 Tube end expansion tool - has holding drillings for guide pins at inner and outer flange sectors |
| 06/09/1993 | CN2135414Y Closing machine for steel package container |
| 05/26/1993 | CN1072359A Cold expansion process for large aperture thin seamless steel tube |
| 05/19/1993 | CN2133380Y Thin pipe developing unit |
| 04/20/1993 | US5203194 Method of forming a trailer hitch receiver tube |
| 04/14/1993 | EP0536632A1 Pipe bending machine with an auxiliary mechanism for performing supplementary operations |
| 04/14/1993 | CN1070854A Steel pipeline sealing end working process |
| 04/06/1993 | CA1315655C Multipurpose tube working tool |
| 03/11/1993 | DE4205598C1 Method of flattening cut ends of plastically deformable material - has wall of tube incised at two points prior to pressing |
| 01/27/1993 | EP0524844A1 Process for building an extra thickness at the ends of the inner tube of a flexible bearing, after molding and its applications |
| 01/26/1993 | CA1313117C Method and device for forming a transverse collar on the end of a metal pipe |
| 01/12/1993 | CA1312458C Process and apparatus for forming flanged ends on tubular workpieces |
| 11/24/1992 | US5165309 Maintaining a preferred vibration mode in an annular article |
| 11/18/1992 | CN2122014U Hose assembly buckling press |
| 10/15/1992 | WO1992017292A1 Pipe expanding pliers |
| 10/15/1992 | DE4111543A1 Pipe end widening out device - uses two pressure cylinders for displacing reciprocating workpiece carriage and perpendicular pipe widening mandrel |
| 10/14/1992 | EP0508850A1 Crimping pliers for tubes and the like |
| 09/02/1992 | EP0501928A1 Apparatus for flaring fitting pipes |
| 09/02/1992 | CN1064039A Method and apparatus for production of portable conic container |
| 08/19/1992 | EP0499094A2 Expanding tool for hollow work pieces |
| 08/18/1992 | US5138863 Coupling for a gas pipe joint and associated method for making same and device therefor |
| 08/18/1992 | US5138858 Method for necking a metal container body |