Patents
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)
12/1993
12/09/1993WO1993024254A1 Method and mechanism for the production of upwinding spiral wire products
12/09/1993WO1993024253A1 Method and tool for producing pallets
12/09/1993CA2137078A1 Method and tool for producing pallets
12/07/1993CA2006678C Device for bending thin metallic pipe
11/1993
11/18/1993EP0570212A1 Method for producing a large arcuate tank
11/16/1993CA2093540A1 Device to measure and compensate for springback in tube bending operation
11/11/1993WO1993022078A1 Method and apparatus for controlled bending of strip stock
11/04/1993DE4214205A1 Installation for bending segments of profiled bars etc. - with additional bending station on tables movable in additional directions
11/03/1993CN2145078Y Double bob-weight hammer type hand edge fold machine
10/1993
10/27/1993CN2144541Y Flange bending device
10/26/1993US5255481 Spacer and spacer frame for an insulating glazing unit and method of making same
10/14/1993WO1993020319A1 Process and device for producing spacing frames used between the glass panels of insulating glass panes
10/14/1993WO1993019865A1 Bending machine for simultaneously bending two individual wires superposed over each other
10/14/1993WO1993019864A1 A universal support and positioning structure for tools used by an elongate element binding machine
10/14/1993DE4211979A1 Concrete reinforcing steel bending machine - has machine table and bending wheel mounted on bending shaft and driven across, also system of reception drillings for insertion of bending pins and bending roller mounted on bending shaft
10/14/1993DE4211574A1 Mfr. of long, metal or plastic profile mouldings, e.g. car trim strips - by cold deformation around metallic core material having m.pt. lower than moulding material
10/07/1993DE4231683A1 Verfahren und Vorrichtung zum Herstellen von Abstandshalterrahmen zur Verwendung zwischen den Glastafeln von Isolierglasscheiben Method and apparatus for producing spacer frames for use between the glass panels of insulating glass panes
10/05/1993US5249445 Machine and method for forming arched roof vertical wall self supporting metal buildings
09/1993
09/22/1993EP0561025A1 Device for bending tubes, in particular for making serpentine-shaped tubes
09/16/1993WO1993017807A1 Manufacture of piston rings
08/1993
08/24/1993US5237848 Method and apparatus for expanding and contouring honeycomb core
08/11/1993EP0554976A1 Rod laying head with front and tail end ring control
08/10/1993US5233853 Stretch straightening hairpin bender
08/05/1993WO1993014892A1 A method for gradually bending spacer profiles for insulating glass, and an apparatus for carrying out the method
07/1993
07/20/1993US5228324 Method of bending metal objects
07/20/1993US5228198 Method of manufacturing a heat exchanger assembly with wrapped tubing
07/07/1993EP0549761A1 Machine for making latticework mats consisting of welded longitudinal and transverse wires.
06/1993
06/29/1993US5222552 Tubular heat exchanger and method for bending tubes
06/23/1993CN2136700Y Dual-purpose sheet bender
06/16/1993EP0546319A1 Stretch bending method for bending hollow profiles and mandrel stretch bending machine
06/15/1993CA1319092C Small-diameter metallic conduit bending machine
06/09/1993DE4140421A1 Bending device for welded wire mesh - has pivoted clamping bar with pressure screws, and pivoted bending beam with bending rollers on beam
06/09/1993CN2135412Y Holding-on machine
06/01/1993US5214951 Method and apparatus for controlled bending of strip stock
05/1993
05/26/1993CN2134243Y Multi-layer spiral coiled pipe pipe bender
05/18/1993US5211047 Die for bending a composite flange having a stretch portion and a straight portion
05/13/1993DE4137188A1 Varying extruded profile cross=section - comprises using shaped die and deforming roller
05/04/1993CA1317158C Method and apparatus for bending corrugated sheet
04/1993
04/29/1993DE4135488A1 Stiffening of tubular profile member - using stiffening section, introduced into profile before bending, with positive connection between the two
04/28/1993EP0538595A1 Bending-shaping machine having multiple working levels
04/21/1993EP0537496A1 Method to make bends in the trailing ends of bars for building work in bending-shaping machines, and bending-shaping machines for bars for building work which employ such method
04/20/1993US5203192 Portable, lightweight machine for bending reinforcing steel rods or the like
04/20/1993US5203069 Method of producing a telescopic cover with rounded corners
04/16/1993CA2080032A1 Method to make bends in the trailing ends of bars for building work in bending-shaping machines, and bending-shaping machines for bars for building work which employ such method
04/14/1993EP0536167A1 Bending machines.
04/14/1993CN1070852A Rotary engineering steels
04/06/1993US5199292 Assembly to bend bundles of rods
04/01/1993WO1993005899A1 Improvements relating to apparatus for forming scrolls from strip material
03/1993
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
03/11/1993DE4230172A1 Forming method for pipe length - in which during winding of one tube, next tube is placed on second support mandrel and then moved to winding mandrel
03/10/1993EP0530436A1 Twist-forming press for crank shaft or the like
03/10/1993EP0475962A4 Method and apparatus for making card clothing
03/09/1993CA1314133C Method of forming reinforced box-section frame members
02/1993
02/04/1993WO1993001904A1 Machine for making latticework mats consisting of welded longitudinal and transverse wires
02/04/1993DE4125486A1 Appts. for positioning and joining, esp. welding of spirally bent tubes - comprising assembly core, rotatable tensioning disc and radial tensioning rings, to form cylindrical component
02/02/1993US5182932 Apparatus for bending steel bars to form concrete reinforcement elements
01/1993
01/07/1993DE4209697A1 Machine for bending steel mats or reinforcing concrete - has bending rollers on cams, which can be positionally adjusted to suit mat
12/1992
12/22/1992US5172994 Ball point pen with bent tip
12/15/1992US5170654 Method for wire bending in three dimensions
12/08/1992US5168737 Method of producing a plate-shaped product comprising positioning a component which is connected to or forms part of a plate, and also device suitable for carrying out the method and plate-shaped product which can be manufactured according to the method
12/03/1992DE4117955A1 Bending reinforcing steel into stirrups - using wire straightening unit with one group of driven rollers one group of movable rollers
11/1992
11/04/1992EP0416046B1 Piston rings
10/1992
10/28/1992CN1018800B Method of forming box-like frame members
10/27/1992CA1309239C Method of forming box-like frame members
10/21/1992CN1018750B Movable framework of tunnel wall covering apparatus
10/13/1992CA1308639C Small-diameter metallic conduit bending machine
10/07/1992EP0386083B1 A method and apparatus for bending corrugated sheet
10/07/1992CN2117958U Full automatic special bending machine
10/01/1992DE4110443A1 Y-tube mfg. process - involves using forming tools of bending cheek and press die in single working stage
09/1992
09/30/1992EP0506575A1 Universal straightening bending machine for reinforcement of concrete work
09/16/1992EP0504095A2 Gas turbine engine component repair
09/09/1992EP0502341A1 Assembly to bend bundles of rods
09/08/1992US5144829 Shears unit
09/02/1992CN1064039A Method and apparatus for production of portable conic container
09/01/1992US5142895 Method for bending tubes
09/01/1992US5142778 Gas turbine engine component repair
08/1992
08/29/1992CA2061543A1 Assembly to bend bundles of rods
08/13/1992DE4103767A1 Shaping plate of metal or plastics into bent corner without distortion - by forming V=shaped notch on inner side of plate where it is to be bent
08/12/1992CN1063431A Single-forming mould for square-section helical tubes
08/05/1992CN2111802U Rolling double-rod variable section plate spring means
07/1992
07/15/1992EP0494633A1 Structure for holding the forming tools of a metal plate stretch-forming machine
07/14/1992USRE33990 Method of forming box-like frame members
07/09/1992CA2058871A1 A structure for supporting forming tools in a drawing machine for forming sheets of metal
07/02/1992DE4041668A1 Hollow metal profile bending - has mandrel to fill the hollow interior on entry to the bending rollers
07/01/1992EP0492211A1 Method for bending hollow metal profiles and apparatus for carrying out this process
06/1992
06/24/1992EP0491195A1 Bending-shaping machine for sections and method to apply bends in the trailing end of sections
06/24/1992EP0491071A1 Stretch-forming machine
06/23/1992US5123272 Pipe bending machine for elongate material
06/23/1992CA2058238A1 Process for bending hollow metal profiles and an apparatus for carrying out this process
06/12/1992CA2031976A1 Drawing machine
06/03/1992EP0488664A1 Heat exchanger assembly with wrapped tubing
05/1992
05/27/1992WO1992009381A1 Twisted percussion drill rod and manufacturing method
05/26/1992CA1301611C Method and apparatus for forming stabilizer bars having novel end constructions
05/14/1992WO1992007671A1 Bending of profiled sheet metal
05/05/1992CA1299925C Die device for forming tube from a metal band
04/1992
04/28/1992US5107694 Twisting flat material into a helix
04/22/1992EP0481279A2 Method of spatial roll-stretch-bending in combination with a mandrel bending station
04/09/1992DE4031463A1 Mobile bending of uncoiled wire or strip
04/08/1992EP0479220A2 Method of and device for transporting and working rod-shaped materials
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