Patents for B21D 7 - Bending rods, profiles, or tubes (6,195)
02/1994
02/08/1994US5284041 Method for bending tubes using split die
02/08/1994US5284040 Tube bending apparatus with stop and abutment means to set bend angle
02/03/1994DE4225108A1 Pipe bending press for hollow profiles with varying bending radii and cross=sections - has automatically exchangeable clamp jaws and bending tools in revolving magazines and has tool change device
01/1994
01/19/1994CN2153423Y Oil pressure transmiting big size wheel pipe bender
01/04/1994US5275031 Bend correction apparatus and method
12/1993
12/29/1993CN2150938Y Multifunctional portable hand pipe bender
12/23/1993DE4240725C1 Wire or strip bending machine - has guide track curving in vertical plane for lockable slide with movable tool=holder
12/16/1993DE4218920A1 Thin-item-bending machine - has outer core section in segments adjusted by components bearing against their rear ramp faces
12/08/1993EP0573397A1 A shaped groove countermatrix for rotary matrix pipe bending machines
12/07/1993CA2006678C Device for bending thin metallic pipe
11/1993
11/24/1993CN1078671A Vertical bending press for rectangular bus
11/23/1993US5263350 Multi-function pipe bending machine
11/18/1993EP0569536A1 Apparatus for bending beams
11/17/1993CN2146315Y Section-bending machine
11/09/1993US5259232 Bending machine
11/09/1993US5259224 Method and apparatus for controlling a pipe bending machine
11/02/1993US5257524 Method and device for manufacturing pipe bends
10/1993
10/19/1993US5253501 Curve bending utilizing two flanking press rollers
10/14/1993WO1993019864A1 A universal support and positioning structure for tools used by an elongate element binding machine
09/1993
09/15/1993EP0560741A1 A portable hydraulic pipe bending apparatus with a rotary chain actuated groove pulley matrix and groove countermatrix bending head
09/14/1993US5243844 Process for producing curved sections in hollow profile strips
09/02/1993WO1993016823A1 Method of manufacturing bent pipe of high tensile steel
08/1993
08/31/1993US5239850 Method for bending elongated materials in a continuous manner
08/24/1993US5237847 Tube bending apparatus
08/18/1993CN2140273Y Assembled roller composite support cold bending steel mill
08/11/1993EP0554533A1 Wire bending apparatus
08/10/1993US5233853 Stretch straightening hairpin bender
07/1993
07/20/1993US5228322 Plant to select and bend bars for building work
07/13/1993US5226305 Articulated split roller assembly for tube bender
06/1993
06/29/1993US5222384 Reciprocal conduit bender
06/22/1993US5220818 Apparatus for bending pipes with hinged clamping jaws
06/16/1993EP0546319A1 Stretch bending method for bending hollow profiles and mandrel stretch bending machine
06/16/1993CN1021203C Versatile tube bending and forming apparatus
06/15/1993CA1319092C Small-diameter metallic conduit bending machine
06/09/1993CN2135411Y Miniature metal element elbowing machine
06/02/1993CN2134899Y Profile forming machine
05/1993
05/19/1993CN2133378Y Hydraulic pipe-bending machine
05/18/1993US5211047 Die for bending a composite flange having a stretch portion and a straight portion
05/18/1993CA1317868C Bending machine
05/13/1993DE4137188A1 Varying extruded profile cross=section - comprises using shaped die and deforming roller
05/12/1993CN2132577Y 便携式液压弯管机 Portable hydraulic pipe bender
05/12/1993CN1071862A Process for permanent bending of deformable bodies
05/11/1993US5209101 Workpiece machining center of modular construction
05/04/1993CA1317158C Method and apparatus for bending corrugated sheet
04/1993
04/28/1993EP0538595A1 Bending-shaping machine having multiple working levels
04/28/1993CN2131225Y Vertical bending machine for rectangular bus
04/28/1993CN2130613Y Rotary tube bender for Z-tube
04/21/1993EP0538207A2 Multi-function pipe bending machine
04/20/1993US5203195 Bending machine for bending bar-shaped material
04/20/1993US5203192 Portable, lightweight machine for bending reinforcing steel rods or the like
04/14/1993CN1020260C Process for producing high-frequency bent tubes having low hardness as worked
04/06/1993US5199292 Assembly to bend bundles of rods
04/06/1993CA1315771C Pulling tower
03/1993
03/31/1993EP0533998A1 Bending machine
03/30/1993US5197320 Method of and apparatus for bending a metal tube of a small diameter
03/30/1993CA1315183C Small-diameter metallic conduit bending machine
03/23/1993US5195348 Bending-shaping machine for sections and method to apply bends in the trailing end of sections
03/16/1993US5193378 Device for bending rod-like material to form concrete reinforcements
03/16/1993CA1314469C Bending machine
03/10/1993EP0530452A1 Method for controlling or tube bending machine
03/07/1993CA2050840A1 Pipe bending machine for elongate material
03/02/1993US5189898 Heavy duty auxiliary tower for a repair rack
03/02/1993CA1313945C Curved pipe manufacturing method and an apparatus for carrying out same
02/1993
02/23/1993US5187963 Tube bending die
02/17/1993CN2127046Y Multi-functional aluminum row flat bending machine
02/16/1993CA2049248A1 Frame member
01/1993
01/27/1993CN1068419A Computerized resilience and elongation instrument for bent tubes
01/21/1993DE4131054C1 Metal tube bending machine - has two beams as right angles and includes telescopic arm
01/07/1993DE4124356C1 Pipe bending machine with clamping head on frame - which forms support column with top cantilever arm whose free end forms bearing for rotary head
12/1992
12/23/1992EP0518929A1 Stabilizer bar and method and apparatus for manufacturing the same.
12/23/1992EP0518910A1 Method for bending pipes
11/1992
11/19/1992EP0513864A2 Method of using a tube bending machine
11/19/1992EP0513023A1 Drive unit for a modular-construction workpiece processing centre.
11/10/1992US5161805 Oil ring assembly
11/10/1992US5161404 Rod bender
11/05/1992DE4206500A1 Device to produce wheel rim - involves setting inclination of sizing element which is altered by hinge of lever and each replaceable tool is attached by sizing element
11/04/1992EP0416046B1 Piston rings
11/03/1992US5159825 Dedimpling apparatus
10/1992
10/28/1992CN2119975U Bender with magnetic damping device
10/20/1992US5157241 Temperature control device provided in a plastic-processing machine
10/20/1992US5156635 Bicycle wheel straightener
10/20/1992CA1309002C2 Apparatus for bending rectangular tubes
10/15/1992WO1992017291A1 Pipe bending plier
10/13/1992US5154000 Conduit bending plane and bend angle indicator
10/13/1992CA1308639C Small-diameter metallic conduit bending machine
10/07/1992EP0386083B1 A method and apparatus for bending corrugated sheet
10/07/1992CN2117957U Portable tube bending machine
09/1992
09/30/1992CN2117221U Three dimension profiling pipe bender
09/23/1992EP0504488A1 Pipe bending device
09/23/1992CN1064631A Method and device for manufacturing pipe bends
09/22/1992US5148695 Adjustable pipe and tubing bender
09/20/1992CA2062897A1 Apparatus for bending pipes
09/09/1992EP0502817A1 Method and apparatus for manufacturing a pipe bend
09/09/1992EP0502341A1 Assembly to bend bundles of rods
09/08/1992US5144829 Shears unit
09/08/1992US5144823 Bend angle indicator
09/06/1992CA2061711A1 Method and device for manufacturing pipe bends
09/02/1992EP0501212A1 Plant to select and bend bars for building work
08/1992
08/29/1992CA2061543A1 Assembly to bend bundles of rods
08/29/1992CA2061221A1 Plant to select and bend bars for building work
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