ClassID:

38413

B21D1/02 - CPC Classification

Classification description:

Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom ; Stretching sheet metal combined with rolling by rollers

Recent Application in this class:
#1
20260027609
2026-01-29

METHOD FOR MULTI-FIELD COUPLING STRENGTHENING OF AN ICE SKATE BLADE EDGE

#2
20250256350
2025-08-14

LASER ASSISTED MACHINING OF SHEET MATERIAL

#3
20250065387
2025-02-27

METHOD FOR IMPROVING DELAYED FRACTURE CHARACTERISTICS OF METAL SHEET, METHOD FOR PRODUCING BLANK, METHOD FOR PRODUCING PRESS-FORMED ARTICLE, AND PRESS-FORMED ARTICLE

#4
20240351084
2024-10-24

Straightening machine and method for straightening

#5
20240207915
2024-06-27

FLATTENING DEVICE

#6
20240091837
2024-03-21

DRAWING AND STRAIGHTENING UNIT FOR METAL PRODUCTS, AND CORRESPONDING METHOD

#7
20240004352
2024-01-04

DYNAMIC PROPORTIONAL-INTEGRAL-DERIVATIVE (PID) METHOD FOR PLATE STRAIGHTENING BASED ON CHANGES IN YIELD STRENGTH

#8
20240001504
2024-01-04

METAL STRIP PRODUCTION BY GRINDING

#9
20240001422
2024-01-04

WAVE ROLL DIE ASSEMBLY

#10
20230294153
2023-09-21

STRAIGHTENING MACHINE AND METHOD FOR STRAIGHTENING A METAL STRIP OR A FLAT METAL PART

#11
20230008459
2023-01-12

Pre-stressed steel sheet

#12
20220305540
2022-09-29

Edge leveler with offset rollers

#13
20220274148
2022-09-01

Control method of a leveling machine and leveling machine

#14
20220193744
2022-06-23

DEVICE AND METHOD FOR LEVELING A METAL PLATE

#15
20220176432
2022-06-09

Tensioning pulley set for a straightening line for straightening a strip, re-rolling stand line and method of operating a straightening line

#16
20220143677
2022-05-12

METHOD AND DEVICE FOR STRAIGHTENING WIRE OR STRIP MATERIAL

#17
20210354183
2021-11-18

Dynamic straightening method for left/right tilt

#18
20210268564
2021-09-02

Methods and systems for automatically adjusting operational parameters of one or more leveling machines

#19
20210220888
2021-07-22

System for flattening steel plates

#20
20210215386
2021-07-15

Flexible duct connector processing system

#21
20210162534
2021-06-03

Laser assisted machining of sheet material

#22
20210154715
2021-05-27

Aluminum alloy wheel end face correcting equipment

#23
20210053097
2021-02-25

Method and computer program product for setting the bending of at least one straightening roller of a roller straightening machine

#24
20200346264
2020-11-05

SHAPE MEASUREMENT APPARATUS, WARPAGE CORRECTION APPARATUS, AND CONTINUOUS PLATING FACILITY FOR METAL STRIP, AND WARPAGE CORRECTION METHOD FOR METAL STRIP

#25
20200269300
2020-08-27

ROLLER LEVELER AND METHOD FOR OPERATING SAME

#26
20200261957
2020-08-20

WARPAGE CORRECTION APPARATUS FOR METAL STRIP AND CONTINUOUS PLATING FACILITY FOR METAL STRIP

#27
20200230677
2020-07-23

METHOD FOR OPERATING A ROLL STRAIGHTENING MACHINE, AND ROLL STRAIGHTENING MACHINE

#28
20200171559
2020-06-04

Multi-roll metal strip leveler

#29
20200164421
2020-05-28

Roller leveler with upper and lower leveling rollers and method for the simple and rapid inspection, maintenance, and servicing of the upper leveling rollers of a roller leveler

#30
20200086370
2020-03-19

Edge leveler with offset rollers

#31
20200079435
2020-03-12

Suspension support bracket and method for manufacturing suspension support bracket

#32
20200030865
2020-01-30

Method for marking workpieces, and workpiece

#33
20190201955
2019-07-04

Apparatus and methods to increase the efficiency of roll-forming and leveling systems

#34
20190184439
2019-06-20

Straightening apparatus for metal products and method to replace at least one straightening roll of said apparatus

#35
20190001384
2019-01-03

STRAIGHTENING MACHINE WITH A MODULAR INTERCHANGEABLE CASETTE SYSTEM

#36
20180369887
2018-12-27

Straightening system and straightening method

#37
20180361446
2018-12-20

CLOSED LOOP ROLLER LEVELER WITH OSCILLATING LASER SENSORS

#38
20180354009
2018-12-13

CLOSED LOOP ROLLER LEVELER

#39
20180333758
2018-11-22

STRAIGHTENING MACHINE AND METHOD FOR THE OPERATION THEREOF

#40
20180304341
2018-10-25

Method for producing a motor vehicle component

#41
20180264531
2018-09-20

Device and method for leveling a metal plate

#42
20180221929
2018-08-09

INTELLIGENT COIL LEVELING VALIDATING SYSTEM AND VALIDATING METHOD THEREOF

#43
20180185898
2018-07-05

Integrated straightener head modifications and improvements

#44
20180185897
2018-07-05

System and method for removing flatness faults from a metal flat product

#45
20180169726
2018-06-21

Dual-stage multi-roll leveler and work roll assembly

#46
20180093310
2018-04-05

Device and method for leveling a metal plate

#47
20180085806
2018-03-29

Device and method for planishing metal product

#48
20180036779
2018-02-08

Straightening apparatus and method of changing rollers thereof

#49
20180029094
2018-02-01

METHODS AND APPARATUS TO DETERMINE A PLUNGE DEPTH POSITION OF MATERIAL CONDITIONING MACHINES

#50
20170266713
2017-09-21

METHOD AND SYSTEM FOR VARYING THE GAGE OF METAL STRIPS

#51
20170072443
2017-03-16

Direct coupled eccentric driven pilot release straightener

#52
20160311004
2016-10-27

Metal strips straightening machine

#53
20160271669
2016-09-22

Shape correction leveler drive systems

#54
20160016214
2016-01-21

Apparatus for changing rolls of a straightening machine

#55
20160001339
2016-01-07

Roll leveller for metal sheets and a process for levelling a metal sheet with it

#56
20150306648
2015-10-29

Leveler equipment and sheet material flattening method

#57
20150306645
2015-10-29

Shape-correcting and rolling method and shape-correcting device for high-strength steel

#58
20150283591
2015-10-08

Positioning drive shaft support for roller leveler

#59
20150251235
2015-09-10

Apparatus and methods to increase the efficiency of roll-forming and leveling systems

#60
20150231678
2015-08-20

Methods and apparatus to monitor material conditioning machines

#61
20150231677
2015-08-20

Methods and apparatus to monitor material conditioning machines

#62
20150183012
2015-07-02

Methods and apparatus for monitoring and conditioning strip material

#63
20150143864
2015-05-28

Roller leveler

#64
20150132597
2015-05-14

Method and device for producing metal profiles having a closely toleranced chamber dimension

#65
20150128675
2015-05-14

Roller leveler and plate flattening method using the same

#66
20150040631
2015-02-12

Methods to drive material conditioning machines

#67
20150027185
2015-01-29

APPARATUS FOR STRAIGHTENING METAL STRIP

#68
20150013418
2015-01-15

ROLLER LEVELER AND SHEET-MATERIAL FLATTENING METHOD

#69
20140260473
2014-09-18

Methods and apparatus to monitor material conditioning machines

#70
20140230508
2014-08-21

STRAIGHTENING APPARATUS

#71
20140190229
2014-07-10

METHOD FOR IMPROVING LIGHT GAUGE BUILDING MATERIALS

#72
20140157850
2014-06-12

Roller leveler

#73
20140083153
2014-03-27

Straightener

#74
20130327109
2013-12-12

Roller leveler and metal sheet flattening method

#75
20130133388
2013-05-30

Methods and apparatus for monitoring and conditioning strip material

#76
20130118224
2013-05-16

Pipe bender

#77
20130111962
2013-05-09

Stretch-bending straightener

#78
20130074565
2013-03-28

LEVELLING DEVICE

#79
20120330451
2012-12-27

CONTROL SYSTEMS AND METHODS FOR MATERIAL PROCESSING

#80
20120174644
2012-07-12

Leveling machine with multiple rollers

#81
20120103047
2012-05-03

ROLLER LEVELER

#82
20120096917
2012-04-26

Device for turning over a flattening element and flattening element engaging with said device

#83
20120055220
2012-03-08

Method for modifying the distance between the rollers of a leveling machine, leveling machine, and apparatus for implementing said method

#84
20120047977
2012-03-01

Apparatus and methods to increase the efficiency of roll-forming and leveling systems

#85
20110247385
2011-10-13

Method and Apparatus for Recycling Metal Banding

#86
20110203339
2011-08-25

Apparatus and process for reducing profile variations in sheet metal stock

#87
20110174595
2011-07-21

Device for leveling metal stock

#88
20110113848
2011-05-19

Methods for reducing ridge buckles and annealing stickers in cold rolled strip and ridge-flattening skin pass mill

#89
20110005289
2011-01-13

Interchangeable cartridge system for a straightening machine and method for operating said straightening machine

#90
20110005287
2011-01-13

Method for improving light gauge building materials

#91
20100263424
2010-10-21

Stretch roll forming

#92
20100162784
2010-07-01

FLATTENING DEVICE

#93
20100095727
2010-04-22

DEVICE FOR STRAIGHTENING A STRIP OF SEMI-RIGID MATERIAL AND FEEDING IT INTO A MACHINE

#94
20100058823
2010-03-11

Method for levelling a flat product in strip or sheet form in a levelling machine with intermeshed rolls and levelling installation therefore

#95
20100050722
2010-03-04

Method and apparatus for improving mechanical properties of magnetically activatable materials

#96
20100018840
2010-01-28

Roller actuating device for machines used for processing metal products

#97
20090282883
2009-11-19

Method of and apparatus for leveling strip

#98
20090120149
2009-05-14

Methods and apparatus for monitoring and conditioning strip material

#99
20090113973
2009-05-07

Methods and apparatus to drive material conditioning machines

#100
20080307912
2008-12-18

Transmission assembly and straightening machine for same

#101
20080098786
2008-05-01

Releasing mechanism and leveling apparatus

#102
20080098784
2008-05-01

Method for straightening a metal strip and straightening machine

#103
20080047318
2008-02-28

Apparatus and process for reducing profile variations in sheet metal stock

#104
20080034827
2008-02-14

Machine for drawing metal sheets

#105
20080011036
2008-01-17

Cassette roller leveler with common back-up rolls

#106
20070186607
2007-08-16

Roller leveller with variable center distance

#107
20070180879
2007-08-09

Work roll scraper for roller levelers

#108
20070163321
2007-07-19

Levelling machine and method

#109
20070062239
2007-03-22

Roll straightener

#110
20070055393
2007-03-08

Method of increasing the control precision of the path of a product in a levelling machine with interlocking rollers, and levelling installation used to implement same

#111
20070044531
2007-03-01

Method and apparatus for conditioning sheet metal

#112
20070033976
2007-02-15

Device and method for calibrating a planishing roller device by means of an instrumented bar

#113
20060277959
2006-12-14

CNC leveler

#114
20060137418
2006-06-29

Methods and apparatus for monitoring and conditioning strip material

#115
20050056067
2005-03-17

Methods and apparatus for monitoring and conditioning strip material

#116
19190726
2025-07-29

Convexity adjusting mechanism for working roll of straightening machine