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 11 - Bending not restricted to forms of material mentioned in only one of groups , ,; Bending not provided for in groups; Twisting
Patents for B21D 11 - Bending not restricted to forms of material mentioned in only one of groups , ,; Bending not provided for in groups; Twisting (4,159)
12/1998
12/29/1998US5852945 Apparatus for forming rod-like components
12/16/1998EP0883452A1 Method for making a skip body with a concave cross section
12/15/1998US5848546 Method of gripping tubular members during forming operations and associated apparatus
12/09/1998EP0882529A1 Bending method with mobile bending assembly and relative shaping machine
12/08/1998US5845609 Fluid heater coils
12/03/1998WO1998053931A1 Method and apparatus for the production of bent sheet metal pieces
12/01/1998US5842372 From a metal strip
12/01/1998US5842363 Production method and apparatus for double curve formed products
11/1998
11/26/1998WO1998053222A1 Helical products
11/26/1998CA2288725A1 Helical products
11/19/1998DE19738976A1 Apparatus for thermal straightening of a metal component
11/17/1998US5836193 Apparatus for forming elongated metal articles and related method
11/11/1998EP0876229A1 Bending of elongate elements
11/10/1998US5834651 Heat treated rapid response pressure gauge spring
11/04/1998EP0875313A1 Casting equipment for continuous or semi-continuous casting of metals, having an improved lubricating fluid supply
11/04/1998EP0875309A1 Perfected bending system for bending machines
11/04/1998EP0875308A2 Automatic reinforcing rod and/or wire head and tail bending unit for bending machines and/or arc-welded steelmesh forming machines
10/1998
10/28/1998CN2295540Y Twisting machine
10/14/1998CN2294121Y Adjustable type bending apparatus for suitcase frame
10/14/1998CA2234383A1 Casting equipment for continuous or semi-continuous casting of metals-improved lubricating fluid supply
10/06/1998CA2007984C Drawing unit downstream of a bending assembly and method to bend the trailing end of bars
09/1998
09/24/1998DE19710046A1 Steel wire bending device to form bows etc.
09/23/1998EP0865842A2 Method and machine for automatically bending profiled elements and the like
09/23/1998EP0865841A2 Process for stretch forming hollow metal bodies
09/16/1998EP0864386A1 Method and device for the production of spirals from wire, reinforcing steel or metallic tube
09/16/1998EP0783425B1 Ladder frame assembly for a motor vehicle
09/16/1998CN2291227Y Multi-functional metal decoration forming machine
09/03/1998WO1998037992A1 Method for forming sheet metal strip
09/02/1998EP0861132A1 Apparatus for forming metal
09/02/1998CN2289622Y Improved structure of straightening machine
08/1998
08/26/1998CN2288793Y Colour plate cold-bending forming machine
08/18/1998US5794481 Device for bending or curving hollow-section strips
08/05/1998EP0856367A2 Stretch forming metal bodies with polymeric internal mandrels
08/05/1998CN2287062Y Metal article shaper
07/1998
07/30/1998WO1998032553A1 Method and apparatus for creating a fold line on corrugated sheet transversely of the corrugations
07/23/1998WO1998031484A1 Machine for bending tubes with small diameter
07/23/1998CA2275946A1 Machine for bending tubes with small diameter
07/22/1998CN1188028A Rolling variable cross-section continuous mill
07/21/1998US5782124 High force rebar bending machine
07/15/1998CN1187395A Method of processing corners of metal panel
07/14/1998US5778719 Method of stretch-forming a channel material
07/01/1998EP0850707A1 Bending method for a double shaping machine and the relative double shaping machine with movable winged elements
07/01/1998EP0850706A2 Method and apparatus for manufacturing helical products
07/01/1998CN1186006A Outer case bending device of refrigerator
06/1998
06/30/1998US5771726 Apparatus and method for twisting hollow rods
06/30/1998CA2164999C Stretch controlled forming mechanism and method for forming metal blanks
06/23/1998CA2096838C Twisted percussion drill rod and manufacturing method
06/18/1998WO1998026462A1 Battery core winder and method of winding a battery core
06/18/1998DE19755342A1 Method for holding and forming a workpiece
06/18/1998CA2274024A1 Battery core winder and method of winding a battery core
06/09/1998US5761946 Method of making spacer stock
05/1998
05/27/1998CN2282467Y Stamping bending shaper for plate metals
05/27/1998CN1038484C Method and equipment for shaping spiral steel pipe by continuous hot push foreward
05/19/1998US5752705 Piston rings
05/07/1998WO1998018580A1 Bending of elongate elements
04/1998
04/30/1998WO1998017414A2 Method and apparatus for forming bends in a selected sequence
04/30/1998WO1998017413A2 Method and apparatus for forming bends in a selected sequence
04/29/1998CN1179999A Apparatus and method for twisting hollow rods
04/15/1998EP0835702A1 Apparatus for cutting and shaping steel bars, particularly for reinforcing concrete
04/15/1998CN1178728A Screw forming lining tube of screw machine tool and relative repairing method
04/14/1998US5737953 Process for stretch forming hollow metal bodies
04/07/1998US5735160 Stretch forming metal bodies with polymeric internal mandrels
03/1998
03/10/1998US5724851 Method and apparatus for forming a leaf spring eye
02/1998
02/28/1998CA2213785A1 Apparatus and methods for twisting hollow rods
02/25/1998EP0824981A1 Process for manufacturing a hollow turbine blade and device used for on-going hot twisting
02/25/1998EP0824977A1 A manipulator for a system for producing bent sheet-metal articles
02/24/1998US5720095 Method and apparatus for producing helically wound lock-seam tubing
02/19/1998WO1998006516A1 An automatic channel letter bending machine
02/19/1998CA2234622A1 An automatic channel letter bending machine
02/17/1998US5719374 Method of bending metal objects with an energy beam
02/17/1998US5718048 Method of manufacturing a motor vehicle frame assembly
01/1998
01/29/1998DE19630023A1 Deformation press for bending pipe sections
01/28/1998CN1171308A Multi-layer lap bending method and device for zigzag thbe with fins
01/21/1998CN1171067A Methods and apparatus for manufacturing helical products
01/12/1998CA2181016A1 Apparatus and method for working a malleable endless web
01/06/1998US5704242 Universal ring bender
12/1997
12/31/1997CN2271418Y Rotary wire core-type spring bend machine
12/23/1997US5700299 Battery core winder and method of winding a battery core
12/16/1997US5697138 Apparatus and method for fabricating trimmed letters
12/10/1997CN2269911Y Section 3-D bending machine of vertical and horizontal composite shaping
12/03/1997EP0810045A2 Method and apparatus for forming a leaf spring eye
11/1997
11/26/1997CN2268589Y Automatic curling apparatus
11/06/1997DE19714663A1 Electric cutting and bending tool for selective cutting and bending of long objects
10/1997
10/30/1997WO1997039845A1 Process and device for core winding roll bending of hollow sections
10/30/1997DE19616048A1 Verfahren zum Kern-Wickel-Roll-Biegen von Hohlprofilen A method of core winding roll bending hollow profiles
10/30/1997CA2201950A1 Method and apparatus for forming a leaf spring eye
10/29/1997CN2265864Y Metal workpiece rounding and angle-bending device
10/21/1997US5678440 Screw conveyors, augers and flighting for use therein
10/16/1997WO1997037785A1 Machine for bending or cambering a profile section, and bending head therefor
10/16/1997CA2250362A1 Machine for bending or cambering a profile section, and bending head therefor
10/15/1997CN2264625Y Charging and discharging unit for electromagnetic variable cross-section plate spring rolling mill
10/15/1997CN1162291A Ladder frame assembly for a motor vehicle
10/14/1997US5676013 Spiral component for a baluster and method and machine for making same
10/01/1997CN2263559Y Heating crude trasporter for leather suitcase frame
09/1997
09/24/1997EP0796157A1 Method and device for the deformation of plate material
09/23/1997US5669261 Apparatus for bending a heat-exchanger tube
09/04/1997WO1997031728A1 Method for making a skip body with a concave cross section
09/04/1997DE19607412A1 Stair railing production method
09/04/1997CA2247525A1 Method for making a skip body with a concave cross section
08/1997
08/27/1997EP0790871A1 Methods and apparatus for manufacturing helical products
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