Patents
Sitemap › B21 - Mechanical metal-working without essentially removing material; Punching metal › B21D - Working or processing of sheet metal or metal tubes, rods or profiles without essentially removing material; Punching › B21D 41 - Application of procedures in order to alter the diameter of tube ends
Patents for B21D 41 - Application of procedures in order to alter the diameter of tube ends (2,982)
10/2000
10/26/2000WO2000037767A3 Profile formation
09/2000
09/20/2000EP0787047B1 Process for heading pipe ends and device for implementing it
09/19/2000US6119501 Method of deforming an initial pipe having a circular cross-section into a U-shaped section and device for carrying out the method
08/2000
08/24/2000WO2000048761A1 Sealing method and press apparatus
08/17/2000WO2000047927A2 Apparatus for swaging an object
07/2000
07/26/2000EP1022076A1 Metallic shaft material diameter increasing device
07/19/2000EP0690754B1 Hand-tool for widening a pipe end
07/19/2000CN1260460A Expanding formed spigot-and-socket flexible joint steel pipe and its making method
07/12/2000EP1017515A1 Spinning processing method and apparatus therefor
07/06/2000DE19860206A1 Widened tube sector producing process, involving laying base plate on end surface of elastomer mold body facing tube end
06/2000
06/29/2000WO2000037772A1 Tubing anchor
06/29/2000WO2000037771A1 Drilling method
06/29/2000WO2000037768A1 Method and apparatus for expanding a liner patch
06/29/2000WO2000037767A2 Profile formation
06/29/2000WO2000037766A2 Procedures and equipment for profiling and jointing of pipes
06/29/2000CA2686423A1 Method and apparatus for drilling and lining a wellbore
06/29/2000CA2646563A1 Tubing anchor
06/28/2000EP1011888A4 Forming technique using discrete heating zones
06/28/2000EP1011888A1 Forming technique using discrete heating zones
06/15/2000WO2000033990A1 Method for producing pipes to be connected in a double-wall piping system and implementing machine
06/15/2000CA2256153A1 Tube end-forming method and apparatus
06/14/2000CN1256178A Cylinder mouth reducer
06/14/2000CN1053401C Device for grooving of tubes
05/2000
05/31/2000EP1004372A2 Method of making hollow profile elements with swaged end, particularly exhaust silencer suspension, made by this method
05/30/2000US6067833 Method and apparatus for forming an end portion of a cylindrical member
05/16/2000US6062060 Tool kit for flaring metal tubes
05/11/2000WO2000025954A1 Spindle mechanism of drawer
05/10/2000CN2377021Y Multifunctional hydraulic metal pipe shaper
04/2000
04/11/2000US6047584 Multipurpose head forming and finishing apparatus
03/2000
03/30/2000DE19843560A1 Manufacturing process for housing half shell for shut-off fittings heats tubular blank to standardizing temperature before then inserting pressing mandrel to expand blank into housing section
03/29/2000CN2370978Y Automatic controller for metallic pipe die receding machine
03/29/2000CN1248501A Process for expanding end of large diameter thick wall steel pipe
03/15/2000EP0824385B1 Multipurpose head forming and finishing apparatus
03/09/2000DE19842856C1 Tube for transport of solid material, particularly concrete, incorporates peripheral side coupling union at least at one side, and axially extending support
03/01/2000EP0982087A2 A process for forming tubular components and components made thereby
03/01/2000EP0982086A1 Device for widening an end portion of a pipe part
02/2000
02/24/2000DE19854284C1 Forming vehicle insulation suspension tube end involves sharpening end of tube and upsetting it into conical shape
02/22/2000US6026555 Coated tube and fitting assembly
02/03/2000WO2000005007A1 Spinning processing method and apparatus therefor
02/01/2000US6018972 Method and apparatus for forming an end portion of a cylindrical member
01/2000
01/25/2000US6016843 Flanged pipe unit and method of producing same
01/25/2000US6016681 Bullet tube expanding apparatus
01/20/2000WO2000002682A1 Metallic shaft material diameter increasing device
01/20/2000CA2303377A1 Metallic shaft material diameter increasing device
01/19/2000CN1048433C Method for making cone-shaped pipe by extrusion moulding
12/1999
12/29/1999EP0809552B1 Headforming machine for expanding tube ends
12/28/1999US6006577 Stackable drawn pieces and process and apparatus for manufacture thereof
12/01/1999CN2351229Y Horizontal expanding awl special machine for processing cone-shape stand
11/1999
11/30/1999US5992198 Method and device for producing a tube in a tube plate
11/30/1999US5992197 Forming technique using discrete heating zones
11/23/1999US5990441 Damper tube closure
11/16/1999CA2144599C Flexible hydraulic expansion mandrel
11/11/1999DE19820937A1 Flat tube for heat exchanger in vehicle cooling system
11/10/1999EP0955107A1 Mehod of deforming a circular shaped tube in a U-shaped profile and apparatus for executing this method
11/10/1999EP0954396A1 Method for spin forming articles
11/10/1999CN2347695Y Boost balancing device for tube end diameter reducing machine
11/10/1999CN1046222C Reducing press for cold-drawing pipes
11/03/1999CN1233542A Art for forming and reducing diameter of lower end of envelope of steel cylinder
10/1999
10/26/1999US5970770 Modular multipurpose bending machine and its linear positioning system
10/05/1999CA2168957C Space frame apparatus and process for the manufacture of same
09/1999
09/28/1999US5956988 Process for heading pipe ends and device for implementing it
09/28/1999US5956987 Machine for flaring pipe ends
09/16/1999DE19820415C1 Method of forming vehicle axle tube into U-shaped profile
08/1999
08/17/1999US5937516 Method for spin forming articles
08/11/1999CN1225298A Method and equipment for reducing tube end by roll forging
08/10/1999US5934136 Compression head for a hydraulic compression tool
07/1999
07/27/1999US5927138 Method of forming a structural member from tubular material
07/15/1999DE19857589A1 Car door impact absorption carrier manufacturing process
07/08/1999DE19814474C1 Radial press tool for rotationally symmetrical workpieces
07/01/1999WO1999032215A1 Method of making a catalytic converter
06/1999
06/24/1999WO1999030852A1 Method of molding high expansion pipe, and the high expansion pipe
06/17/1999DE19756293A1 Tube end calibrating device
06/16/1999EP0922510A1 Method and device for forming a tube in a tube plate
06/16/1999CN2323887Y Improved structure of apparatus for reducing the diameter of tube end
06/02/1999CA2223298A1 Tool kit and method for swaging and flaring metal tubes
06/01/1999US5907969 Tool for working shaped, hollow metal tubing to achieve an end reduction
05/1999
05/26/1999CN1217241A Simple tube-drawing method and apparatus
05/19/1999EP0916428A2 Method and apparatus for forming an end portion of a cylindrical member
05/19/1999EP0916426A1 Method and apparatus for forming an end portion of a cylindrical member
05/12/1999DE19749369A1 Device for bending tube
05/11/1999US5902086 Process for manufacturing a deformed metal can having a reshaped can body wall
04/1999
04/22/1999WO1998043759A9 Forming technique using discrete heating zones
04/07/1999EP0906798A2 Method of manufacturing a reservoir tube
03/1999
03/18/1999DE19730054C1 Expansion head with housing for screwing onto expander tongs
02/1999
02/25/1999DE19736068C1 Method of production of refrigerator pipe connector
02/24/1999CN2308458Y Metal vessel sealing machine
02/10/1999EP0895883A1 Method of making a vehicle stabiliser bar
02/03/1999EP0854803A4 Frame apparatus and process for the manufacture of same
01/1999
01/07/1999WO1999000200A1 Device for flaring a pipe
01/06/1999CN1203846A Method for making pipe with flange plate
01/05/1999US5855137 Method of manufacturing a reservoir tube
12/1998
12/30/1998EP0887126A1 Pipe expanding device
12/23/1998CN1202399A Modular multipurpose bending machine and its linear positioning system
12/08/1998US5845527 System and method for constricting wall of a tube
12/03/1998WO1998041706A3 Metal framing system
11/1998
11/25/1998EP0879655A2 Modular multipurpose bending machine and its linear positioning system
11/18/1998EP0725908B1 Method for expanding a pipe end
11/17/1998US5836197 Integral machine tool assemblies
11/11/1998EP0876863A1 Bearing race ring manufacturing process and correspoding tool arrangement
11/03/1998US5829911 Method for forming a high-tooth spline of a hollow shaft and hollow shaft having a high-tooth spline
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