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 31 - Other methods for working sheet metal, metal tubes, metal profiles
Patents for B21D 31 - Other methods for working sheet metal, metal tubes, metal profiles (2,523)
09/1984
09/11/1984CA1174016A1 Enhanced recovery memory metal device
09/04/1984CA1173739A1 Method and apparatus for perforating metal strip
08/1984
08/29/1984EP0117184A1 Openwork structure in expanded material, filter and heat exchanger including such a structure
08/29/1984EP0117144A2 Method for the production of coined metal sheet products
08/14/1984US4464920 Machine for roller forming metal louvers
08/01/1984EP0114799A2 Apparatus for producing stamped sections in continuously advanced strip blank
08/01/1984EP0114593A1 Process for the production of a hollow cylinder for synthetics processing machines
08/01/1984EP0114592A1 Process for treating metals by using dies
08/01/1984EP0114591A1 Process for the production of arm barrels
06/1984
06/27/1984EP0111624A1 Improvements in and to aluminium discs for the manufacture of metal containers by impact extrusion
06/19/1984US4454741 Flow drill for the provision of holes in sheet material
05/1984
05/29/1984US4450707 Hardened metal workpiece straightening machine
05/16/1984EP0108729A1 Method for making extended heat transfer surfaces and a tool for putting said method into practice
05/16/1984EP0108707A2 An apparatus for forming fins for heat exchangers
04/1984
04/04/1984EP0104311A1 Method for the deformation of a platelike work piece
04/03/1984US4440215 Heat pipe
01/1984
01/17/1984US4425777 Method of and device for manufacturing a jet nozzle plate for ink jet printers
12/1983
12/06/1983US4418558 Method of manufacture of ventilated sheet metal floor members
11/1983
11/09/1983EP0093697A2 Method and apparatus for manufacturing a structural element for use as a permanent shuttering
11/08/1983US4413495 Method for the stiffening and straightening of starting sheets
09/1983
09/13/1983CA1153530A1 Fabricated expanded metal
08/1983
08/23/1983CA1152387A1 Process for joining narrow width thin gage metal or alloy strip
08/02/1983US4396685 Fabricated expanded metal
06/1983
06/28/1983US4390599 Enhanced recovery memory metal device
05/1983
05/10/1983CA1146063A1 Cam shaft operated punch press for expanding lead alloy battery grid material
04/1983
04/19/1983CA1144765A1 Gear burnisher
01/1983
01/04/1983CA1138797A1 Method and apparatus for the stiffening and straightening of starting sheets
11/1982
11/23/1982CA1136211A1 Orienting and sizing battery grids and articles formed thereby
11/09/1982CA1135167A1 Expanded reinforcing sheet material, its method of manufacture, and sheet material reinforced therewith
09/1982
09/30/1982WO1982003192A1 Method and device for modifying the shape of surfaces and plates
09/21/1982US4350035 Method of shaping objects by means of a solid-particle blast applied to one side thereof
09/21/1982US4349949 Method of making heat exchangers
08/1982
08/24/1982US4345452 Cam shaft operated punch press for expanding lead alloy battery grid material
08/10/1982US4343171 Apparatus for manufacturing a slat for a shutter
08/04/1982EP0057039A1 Flow drill for the provision of holes in sheet material
06/1982
06/29/1982US4336704 Apparatus for orienting and sizing battery grids
06/24/1982WO1982002009A1 Device for corrugating sheet material
06/23/1982EP0054395A2 Method and apparatus for perforating metal strip
05/1982
05/12/1982EP0051322A1 Battery grid
04/1982
04/27/1982CA1122735A1 Telephone station with automaticswitch-over between pulse code dialling and multifrequency code dialling
02/1982
02/16/1982US4315356 Forming expanded mesh sheet from deformable strip
02/10/1982EP0045627A1 Enhanced recovery memory metal device
02/09/1982CA1117926A1 Method and apparatus for separating strip coil from wound construct
12/1981
12/15/1981US4305190 Gear burnisher
12/15/1981US4305187 Method and apparatus for making continuous grids for lead acid batteries
12/15/1981CA1114241A1 Forming expanded mesh sheet from deformable strip
11/1981
11/03/1981US4297866 Asymmetrical shaping of slit segments of meshes formed in deformable strip
10/1981
10/27/1981US4297154 Method of manufacturing expanded reinforcing sheet material
10/06/1981US4292862 Method and apparatus for production of a stream feeder
09/1981
09/30/1981EP0036728A2 Method and apparatus for separating strip coil from wound construct
09/29/1981US4291443 Forming expanded mesh sheet from deformable strip
08/1981
08/18/1981US4284693 Orienting and sizing battery grids and articles formed thereby
08/11/1981CA1106703A1 Asymmetrical shaping of slit segments of meshes formed in deformable strip
06/1981
06/16/1981CA1103221A1 Machine for detaching a surgical blade from a continuous strip
06/09/1981US4271777 Apparatus for reforming round cans into rectangular cans
05/1981
05/19/1981US4267984 Method and apparatus for separating strip coil from wound construct by rotation
04/1981
04/14/1981US4262059 Method for making a thin-walled object
04/14/1981US4261252 Piercing structure
03/1981
03/31/1981US4259385 Rubber-based foamable adhesive
03/24/1981CA1097987A2 Machine for expanding metal webs
03/24/1981CA1097986A2 Reticulating apparatus
02/1981
02/24/1981US4252042 Feeding mechanism for battery stock
02/24/1981CA1096150A1 Method and apparatus for the surface working and for reworking of workpieces
02/03/1981US4247970 Apparatus for forming expanded metal such as battery grids
10/1980
10/07/1980US4226111 Method and apparatus for the surface working and for reworking of workpieces
10/07/1980US4226109 Tool for the stamping of holes or the like in sheet material such as metal plate
09/1980
09/17/1980EP0015470A1 Method and arrangement for the production of relief plates
09/09/1980US4221032 Method of forming expanded metal grids particularly lead grids for storage battery plates
09/02/1980US4220035 Device for the straightening of thin metallic parts especially sheets
09/02/1980US4220030 Orienting and sizing battery grids and articles formed thereby
08/1980
08/05/1980CA1083031A1 Method and apparatus for producing openings in sheet material
08/05/1980CA1082993A1 Reticulating apparatus
07/1980
07/29/1980CA1082533A1 Machine for expanding metal webs
06/1980
06/17/1980CA1079580A1 Method and apparatus for fabricating reticular sheet material
04/1980
04/29/1980CA1076424A1 Method for making flattned expanded lead strip for battery plates
04/16/1980EP0009816A1 Method and apparatus for orienting and sizing battery grids
04/01/1980US4195688 Heat-transfer wall for condensation and method of manufacturing the same
03/1980
03/25/1980US4194384 Method of manufacturing heat-transfer wall for vapor condensation
01/1980
01/22/1980US4184355 Method and a punch/die assembly for the production of heat exchanger fins
01/08/1980US4182152 Grid sleeve bulge tool
12/1979
12/18/1979CA1068198A1 Method for making tubular members and product thereof
10/1979
10/16/1979CA1064418A1 Composite end panel for can or similar container
06/1979
06/26/1979CA1057133A1 Method and apparatus for producing steel box toes to be used in safety shoes
06/26/1979CA1057132A1 Controlled environment superplastic forming of metals
06/19/1979CA1056706A1 Method and apparatus for reforming round ducts into rectangular ducts
05/1979
05/01/1979US4151769 Tube louvering machine
03/1979
03/20/1979US4144624 Machine for expanding metal webs
11/1978
11/14/1978US4124925 Expanded metal
10/1978
10/10/1978US4118850 Gasket forming apparatus
10/10/1978CA1039934A1 Heat exchanger and method of making same
09/1978
09/05/1978US4111028 Method and apparatus for fabricating reticular sheet material
08/1978
08/29/1978US4109501 Method for the production of heat exchanger fins
07/1978
07/25/1978US4102024 Method and apparatus for making flattened expanded lead strip for battery plates
05/1978
05/16/1978US4089090 Arrangement for perforating a stripe
05/09/1978US4087912 Punch
03/1978
03/07/1978US4077247 Method and apparatus for improving the formability of sheet metal
01/1978
01/17/1978US4068366 Method and apparatus for producing openings in sheet material
11/1977
11/22/1977US4059000 Rotary embosser and process of embossing strip sheet metal
10/1977
10/25/1977US4055067 Method and a punch/die assembly for the production of heat exchanger fins
09/1977
09/06/1977US4046306 Composite end panel for can or similar container
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