B21D - Working or processing of sheet metal or metal tubes, rods or profiles without essentially removing material; Punching

More topics under "B21D - Working or processing of sheet metal or metal tubes, rods or profiles without essentially removing material; Punching" (156,281)
B21D 1 - Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling (4,692)
B21D 11 - Bending not restricted to forms of material mentioned in only one of groups , ,; Bending not provided for in groups; Twisting (4,159)
B21D 13 - Corrugating sheet metal, rods or profiles; Bending sheet metal, rods or profiles into wave form (2,021)
B21D 15 - Corrugating tubes (1,257)
B21D 17 - Forming single grooves in sheet metal or tubular or hollow articles (1,507)
B21D 19 - Flanging or other edge treatment, e.g. of tubes (3,484)
B21D 21 - Combined processes according to methods covered by groups (343)
B21D 22 - Shaping without cutting, by stamping, spinning, or deep-drawing (12,324)
B21D 24 - Special deep-drawing arrangements in, or in connection with, presses (1,969)
B21D 25 - Working sheet metal of limited length by stretching, e.g. for straightening (421)
B21D 26 - Shaping without cutting otherwise than by using rigid devices or tools or yieldable or resilient pads, e.g. shaping by applying fluid pressure or magnetic forces (5,593)
B21D 28 - Shaping by press-cutting; Perforating (12,707)
B21D 3 - Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts (4,094)
B21D 31 - Other methods for working sheet metal, metal tubes, metal profiles (2,523)
B21D 33 - Special measures in connection with working metal foils, e.g. gold foils (280)
B21D 35 - Combined processes according to methods covered by groups (2,318)
B21D 37 - Tools as parts of machines covered by this subclass (19,804)
B21D 39 - Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders (11,420)
B21D 41 - Application of procedures in order to alter the diameter of tube ends (2,982)
B21D 43 - Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices (11,526)
B21D 45 - Ejecting or stripping-off devices arranged in machines or tools dealt with in this subclass (3,285)
B21D 47 - Making rigid structural elements or units, e.g. honeycomb structures (1,767)
B21D 49 - Sheathing or stiffening objects (201)
B21D 5 - Bending sheet metal along straight lines, e.g. to form simple curves (9,374)
B21D 51 - Making hollow objects (8,973)
B21D 53 - Making other particular articles (18,517)
B21D 55 - Safety devices protecting the machine or the operator, specially adapted for apparatus or machines dealt with in this subclass (1,032)
B21D 7 - Bending rods, profiles, or tubes (6,195)
B21D 9 - Bending tubes using mandrels or the like (1,513)

Patents for B21D - Working or processing of sheet metal or metal tubes, rods or profiles without essentially removing material; Punching (203)
04/2004
04/28/2004	EP1413372A1 Metal ring assembly which is assembled and soldered to a support collar in order to form the annular cooling conduit of an internal combustion engine piston, the method of producing said finned metal ring and the metal ring thus obtained
04/22/2004	DE10246977A1 Appliance for 3D freeform bending of esp. hollow profiles has turning drive acting on profile to turn it about its longitudinal axis relative to bending sleeve
04/15/2004	US20040070108 Method of assembling a single piece co-cured structure
04/01/2004	WO2004026500A2 Self-lubricating expansion mandrel for expandable tubular
04/01/2004	WO2004007108A3 Sound-absorbing hollow body for an air supply
04/01/2004	CA2499071A1 Self-lubricating expansion mandrel for expandable tubular
03/2004
03/25/2004	WO2004024359A2 Improved method of forming a tubular blank into a structural component and die therefor
03/25/2004	CA2497359A1 Improved method of forming a tubular blank into a structural component and die therefor
02/2004
02/12/2004	WO2004012879A2 Tube crimping/bending apparatus
02/12/2004	US20040025559 Tube crimping/bending apparatus
02/05/2004	WO2004011169A2 Method of assembling a single piece co-cured structure
01/2004
01/22/2004	WO2004007108A2 Sound-absorbing hollow body for an air supply
01/22/2004	DE10231048A1 Schalldämmender Hohlkörper zur Luftführung Sound-insulating hollow body for air guidance
11/2003
11/20/2003	WO2003095121A1 Die production method
11/12/2003	EP1361164A1 Can end
10/2003
10/30/2003	WO2003089167A1 Can end
10/23/2003	WO2003086675A2 Protective sleeve for threaded connections for expandable liner hanger
02/2003
02/13/2003	WO2003011497A1 Metal ring assembly which is assembled and soldered to a support collar in order to form the annular cooling conduit of an internal combustion engine piston, the method of producing said finned metal ring and the metal ring thus obtained
02/13/2003	CA2453167A1 Metal ring assembly which is assembled and soldered to a support collar in order to form the annular cooling conduit of an internal combustion engine piston, the method of producing said finned metal ring and the metal ring thus obtained
06/2001
06/06/2001	CN1297836A Equipment and method for cutting spacer bar
02/2001
02/28/2001	CA2317075A1 Protective shroud
09/2000
09/12/2000	US6115919 Heat exchanger
09/1999
09/21/1999	US5954125 Multi-row heat exchanger
07/1999
07/07/1999	EP0927865A1 Multi-row heat exchanger
08/1998
08/25/1998	US5797449 Heat exchanger
06/1998
06/25/1998	WO1998027393A1 A heat exchanger
12/1997
12/31/1997	CN1036840C Wall punched pull ring
11/1997
11/04/1997	CA2070100C Apparatus and method for hydroforming sheet metal
01/1997
01/15/1997	EP0753712A2 A heat exchanger
02/1996
02/28/1996	EP0455806B1 Apparatus and method for hydroforming sheet metal
06/1995
06/14/1995	CN1028846C Apparatus and method for hydroforming sheet metal
12/1994
12/13/1994	US5372026 Apparatus and method for hydroforming sheet metal
12/06/1994	US5369973 Process and device for bending tubes which can be deformed or bent
12/1993
12/28/1993	CA1325535C Rolling mill machine for longitudinal bending of plate
06/1993
06/08/1993	CA1318816C Machine for corrugating sheet metal or the like
05/1993
05/04/1993	CA1317241C Abuse resistant, safety-edge, controlled-opening convenience-feature endclosures
12/1992
12/15/1992	CA1311405C Rolling mill machine for longitudinal bending of plate
12/08/1992	US5168742 Method and apparatus for forming wall ironed articles
10/1992
10/28/1992	EP0432173B1 Rotary punching machine
10/27/1992	US5157969 Apparatus and method for hydroforming sheet metal
10/06/1992	US5152209 Rotary punching machine
07/1992
07/01/1992	EP0339064B1 Rolling mill machine
07/01/1992	EP0339063B1 Rolling mill machine
06/1992
06/30/1992	CA1304278C Car body rectifying means
04/1992
04/22/1992	EP0455806A4 Apparatus and method for hydroforming sheet metal
12/1991
12/19/1991	DE4019196A1 Tube bending
12/18/1991	EP0461644A1 Method and device to bend deformable, for example bendable pipes
12/16/1991	WO1991019603A1 Process and device for bending tubes which can be deformed or bent
12/16/1991	CA2064468A1 Process for bending pipes
12/04/1991	CN1056641A Apparatus and method for hydroforming sheet metal
11/1991
11/27/1991	EP0318497B1 Machine for corrugating sheet metal or the like
11/13/1991	EP0455806A1 Apparatus and method for hydroforming sheet metal.
10/1991
10/09/1991	EP0269705B1 Car body rectifying means
10/09/1991	EP0268657B1 Procedure in car body rectifying work and rectifying means arrangement
06/1991
06/19/1991	EP0432173A1 Rotary punching machine.
06/13/1991	WO1991008065A1 Apparatus and method for hydroforming sheet metal
01/1991
01/22/1991	US4986105 Machine for corrugating sheet metal or the like
01/02/1991	CN1011032B Rectifying device for car body
01/02/1991	CA1278499C Procedure in car body rectifying work and rectifying means arrangement
12/1990
12/19/1990	CN1047817A Method and apparatus for forming wall ironed articles
12/13/1990	WO1990014901A1 Method and apparatus for forming wall ironed articles
12/13/1990	CA2032144A1 Method and apparatus for forming wall ironed articles
12/12/1990	EP0402006A1 Method and apparatus for forming wall ironed articles
03/1990
03/06/1990	US4905496 Procedure in car body rectifying work and rectifying means arrangement
02/1990
02/27/1990	US4903516 Rolling mill machine for longitudinal bending of plate
02/22/1990	WO1990001381A1 Rotary punching machine
02/21/1990	CN1039769A Container end-closure
02/13/1990	US4899568 Rolling mill machine for longitudinal bending of plate
11/1989
11/02/1989	EP0339064A1 Rolling mill machine.
11/02/1989	EP0339063A1 Rolling mill machine.
09/1989
09/27/1989	EP0333805A1 Abuse resistant, safety-edge, controlled-opening convenience-feature endclosures
07/1989
07/18/1989	US4848136 Car body rectifying means
06/1989
06/07/1989	EP0318497A1 Machine for corrugating sheet metal or the like.
04/1989
04/20/1989	WO1989003261A1 Rolling mill machine
04/20/1989	WO1989003260A1 Rolling mill machine
04/06/1989	WO1989002854A1 Abuse resistant, safety-edge, controlled-opening convenience-feature endclosures
02/1989
02/07/1989	US4802603 For carbonated beverages
07/1988
07/21/1988	DE3700785A1 Macerate, process for its preparation and its use as medicine
06/1988
06/08/1988	EP0269705A1 Car body rectifying means.
06/01/1988	EP0268657A1 Procedure in car body rectifying work and rectifying means arrangement.
02/1988
02/25/1988	WO1988001208A1 Machine for corrugating sheet metal or the like
12/1987
12/09/1987	CN87103913A Procedure in car body rectifying work and rectifying means arrangement
12/03/1987	WO1987007191A1 Car body rectifying means
12/03/1987	WO1987007190A1 Procedure in car body rectifying work and rectifying means arrangement
04/1986
04/08/1986	US4580433 Method of bending shaped metal sheet and apparatus for carrying out the method
08/1985
08/21/1985	EP0151838A1 Heat treating hardenable carbon steel pipe
03/1985
03/26/1985	CA1184535A1 Tear-off caps for closing bottles
05/1984
05/22/1984	US4449388 Method of bending shaped metal sheet and apparatus for carrying out the method
05/01/1984	CA1166606A1 Method of manufacture of gravity screen separating cylinder
09/1982
09/28/1982	CA1132470A1 Tab and ecology end
09/28/1982	CA1132469A1 Container with releasable closure
02/1982
02/16/1982	CA1118374A1 Non-detach beverage end
01/1982
01/19/1982	US4311249 Container with releasable closure
09/1981
09/17/1981	WO1981002535A1 A method of bending shaped metal sheet and apparatus for carrying out the method
09/09/1981	EP0035483A2 A method of bending shaped metal sheet and apparatus for carrying out the method
09/01/1981	US4286728 Tab and ecology end
03/1981
03/10/1981	US4254886 Can body having a laterally projecting flange
08/1980
08/19/1980	CA1083890A1 Can body having a laterally projecting flange
06/1980
06/03/1980	US4205760 Non-detach beverage end
04/1980
04/29/1980	CA1076314A1 Process and apparatus for the continuous and repetitive production of discrete articles from deformable materials

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