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 5 - Bending sheet metal along straight lines, e.g. to form simple curves
Patents for B21D 5 - Bending sheet metal along straight lines, e.g. to form simple curves (9,374)
10/1982
10/20/1982EP0063041A2 Improved incremental bending method and apparatus
10/19/1982US4354374 Bending press
10/19/1982US4354372 Method and apparatus for cold roll forming metal strip
10/12/1982US4353235 Edge preforming of metal plate
10/05/1982US4352284 Vertical press
10/05/1982US4352282 Sheet metal panel brake
09/1982
09/28/1982US4351176 Bending brake hemmer
09/15/1982EP0059995A2 Apparatus for restoring used structural plates
09/07/1982US4347727 Programmable upward-stroke insert mechanism for bending brakes and method of use
09/02/1982WO1982002914A1 Wide panel,panel assembly,and panel forming apparatus
08/1982
08/25/1982EP0058423A2 Hand operated cutter for strips, especially for making fixation means for tubes
08/17/1982CA1129759A1 Automatic punching and bending machine
08/10/1982US4343226 Arrangement for hydraulic presses and bending presses
07/1982
07/27/1982US4341104 Press brake plate lifter table
07/22/1982WO1982002360A1 Hydraulic press comprising a fixed apron and a moving apron
07/20/1982US4339941 Method and apparatus for producing thick welded steel pipe
07/20/1982US4339938 Method and apparatus for forming metal pipes and tubes
07/13/1982US4338808 Eavestrough corner bracket
07/07/1982EP0055436A2 Method of reducing springback in mechanically pressed sheet materials
07/07/1982EP0055435A2 Method of reducing springback in mechanically pressed sheet materials - II
07/07/1982EP0055421A2 Method of reducing curling in pressed sheet materials
07/06/1982US4337637 Parallel positioning device
06/1982
06/30/1982EP0055102A2 Drive mechanism for a rolling machine
06/01/1982CA1124577A1 Dunnage bar and method of making it
05/1982
05/25/1982US4331020 Dimension indicator for sheet-metal folding or shearing machine tools
05/25/1982US4331018 Folding machine
05/18/1982US4329865 Material engaging apparatus
05/12/1982EP0051554A2 Pipe press
05/11/1982US4328696 Method and apparatus for forming a heat shield plate
05/11/1982US4328695 Punch adaptor for folding machine
05/04/1982US4327570 Apparatus for bending strip material into toothed shape
04/1982
04/14/1982EP0049313A2 Method and device for bending corrugated or profiled sheet metal
04/13/1982CA1121703A1 Method and apparatus for shaping a strip
04/07/1982EP0049079A1 Method for rolling plate
03/1982
03/30/1982US4321819 Press construction
03/30/1982US4321817 Sheet bending brake
03/16/1982CA1119849A1 Line pipe forming apparatus and method
03/09/1982CA1119469A1 Apparatus and method for forming seamed tube
03/04/1982WO1982000607A1 Method and apparatus for manufacturing a metal pipe
02/1982
02/16/1982US4315425 Clamping device for fastening a tool to a tool holder
02/16/1982US4315422 Bender employing socket wrench means
02/03/1982EP0044892A1 Vertical press
01/1982
01/26/1982US4312208 Four-roller bending and rounding machine
01/13/1982EP0043750A1 Apparatus for forming tubes of small diameter
01/12/1982US4309890 Method of forming a cylindrical member
12/1981
12/24/1981WO1981003631A1 Edge preforming of metal plate
12/15/1981US4305340 Method of forming a box-shaped structure from a foldable metal sheet
12/15/1981US4305271 Apparatus for rolling curved sections
12/08/1981CA1113846A1 Sheet metal brake
11/1981
11/10/1981US4299643 Method of making a hinged display mount
11/10/1981US4299108 Cage-roll unit for metal pipe forming
11/04/1981EP0039322A1 Device for folding sheet metal
11/03/1981CA1111942A1 Twin motor and screw drive for workpiece positioning stops and for press ram drive and the like
10/1981
10/13/1981US4294095 Process for fabricating heavy wall to pipe
09/1981
09/29/1981US4291569 Hydraulic press
09/17/1981WO1981002535A1 A method of bending shaped metal sheet and apparatus for carrying out the method
09/15/1981CA1108938A1 Core strip blank, core strip and method of making same
09/09/1981EP0035483A2 A method of bending shaped metal sheet and apparatus for carrying out the method
09/02/1981EP0035009A1 Device for supporting the working roll of a sheet bending or levelling machine
09/01/1981US4286451 Forming leveller
08/1981
08/11/1981US4282738 Method and apparatus for adjusting stroke length of a ram for presses
08/11/1981US4282735 Brake for sheet metal or the like
08/11/1981CA1106704A1 Method and apparatus for adjusting stroke length of a ram for presses
07/1981
07/21/1981CA1105328A1 Method of cold roll forming
07/15/1981EP0031822A1 Method for bending sheets and device for implementing the method.
07/01/1981EP0031087A1 Arrangement for height adjustment of the matrix bottom of bending tools for bending sheet metals
06/1981
06/30/1981US4275581 Method for increasing the fin density of a heat exchanger
06/24/1981EP0030552A1 Forming leveller
06/16/1981US4273836 Core strip blank, core strip and method of making same
05/1981
05/27/1981EP0029345A2 Method and apparatus for rolling plate to form a substantially cylindrical article
05/14/1981WO1981001258A1 Method and device for bending sheet metal
05/12/1981US4266417 Steel flanged wheel rims for motorized bicycles or two-wheeled vehicles and a process for producing the rims
05/05/1981US4265103 Relating to cold sheet metal roll forming apparatus
04/1981
04/21/1981US4262376 Method and apparatus for manufacturing a solar energy collector
03/1981
03/25/1981EP0025469A1 Method and hydraulic device for adjusting the stroke depth of the ram of a hydraulic bending press
03/17/1981US4255958 Method and apparatus for precision locating of a workpiece in a press brake
02/1981
02/11/1981EP0023894A1 Forming press for making perimetral bends on metal sheets
02/10/1981US4249406 Line pipe forming apparatus and method
02/05/1981WO1981000222A1 Method for bending sheets and device for implementing the method
02/04/1981EP0023423A2 Method of and means for forming sheet metal
01/1981
01/14/1981EP0022403A1 Gauge setting device for metal sheet forming or shearing machine tools
01/07/1981EP0022122A1 Bending machine
01/07/1981EP0021791A1 A method of roll forming stock and forming leveller
01/06/1981US4242904 Workpiece stop means for a sheet metal working machine
01/06/1981US4242898 Machine for bending the edges of rectangular sheets of metal
01/06/1981CA1092756A1 Forming of preconsolidated metal matrix composites
12/1980
12/30/1980CA1092345A1 Device for measuring the bending angles in plate- bending machines
12/24/1980WO1980002810A1 Forming leveller
12/23/1980US4240279 Sheet metal brake
12/09/1980US4238550 Dunnage bar and method of making it
12/09/1980US4237716 Sheet metal brake with improved locking mechanism
11/1980
11/11/1980US4232540 Controlled variable radius roll forming apparatus
10/1980
10/28/1980US4230058 Method and apparatus for manufacturing box-shaped structure from metal sheet
09/1980
09/03/1980EP0014813A1 Method of fabricating slit tubes for a tube welding machine and device for carrying out this method
08/1980
08/26/1980CA1084345A1 Light gauge sheet metal forming machine
08/19/1980CA1083937A1 Forming curved segments from metal plates
08/05/1980CA1083019A1 Cryogenically forming work-hardened sheets of face- centered cubic metal into shaped articles of desired configuration
08/05/1980CA1082958A1 Fin pass roll
07/1980
07/22/1980CA1081957A1 Apparatus for bending windows by means of presses
07/15/1980US4212188 Apparatus for forming sheet metal
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