Patents-Review.com
ClassID:

38650 ⎘

B21D28/22 - CPC Classification

Classification description:

Shaping by press-cutting; Perforating; Punching blanks or articles with or without obtaining scrap ; Notching Notching the peripheries of circular blanks, e.g. laminations for dynamo-electric machines

Recent Application in this class:
#1
20250025928
2025-01-23

METHOD FOR MANUFACTURING LAMELLAS FOR A LAMINATION

 #2
20240149324
2024-05-09

METHOD FOR PRODUCING PLATE PIECE AND PUNCHING MACHINE

 #3
20240123485
2024-04-18

PROCESSING APPARATUS FOR ROUNDING EDGE OF LEAD TAB FOR SECONDARY BATTERY

 #4
20220355358
2022-11-10

METHOD FOR PRODUCING A SHEET METAL PART

 #5
20220241837
2022-08-04

METHOD FOR STACKING PUNCHED LAMINATION ELEMENTS TO FORM LAMINATION STACKS

 #6
20220008980
2022-01-13

Metal parts blanking process for rotor and stator of an electric motor

 #7
20210346996
2021-11-11

Method for producing a clutch pack formed by clutch plates arranged on top of one another, and device for carrying out a method of this type

 #8
20210187581
2021-06-24

Apparatus for notching, and punching system

 #9
20210066997
2021-03-04

Shaft, rotor lamination and rotor for an electric machine, electric machine, vehicle, and method for producing a rotor

 #10
20210060635
2021-03-04

Device for manufacturing laminated iron core and method for manufacturing laminated iron core

 #11
20200161942
2020-05-21

Laminated iron core and manufacturing method of laminated iron core

 #12
20200094305
2020-03-26

Method for manufacturing iron core

 #13
20200061692
2020-02-27

NOTCHING DEVICE INCLUDING A TWO-TIER DIE SET

 #14
20190296619
2019-09-26

Localized induction heat treatment of electric motor components

 #15
20190151926
2019-05-23

Process for blanking of metal parts

 #16
20190115811
2019-04-18

Method of manufacturing laminated core

 #17
20190099800
2019-04-04

Method of manufacturing laminated iron core

 #18
20190054516
2019-02-21

Punch press

 #19
20180345427
2018-12-06

Method for producing a clutch pack formed by clutch plates arranged on top of one another, and device for carrying out a method of this type

 #20
20180001369
2018-01-04

Punching method, punching device, and method for manufacturing laminated iron core

 #21
20170361482
2017-12-21

Notching tool, use and method

 #22
20170328120
2017-11-16

Automated spacer frame fabrication and method

 #23
20170274440
2017-09-28

Method for the manufacturing of lamina work pieces

 #24
20170229929
2017-08-10

Laminated core of a stator or a rotor and electrical machine

 #25
20160285325
2016-09-29

Laminated iron core and manufacturing method of laminated iron core

 #26
20160243605
2016-08-25

Die apparatus and manufacturing method of metal product using die apparatus

 #27
20150372572
2015-12-24

Method for manufacturing laminated iron core

 #28
20150372571
2015-12-24

Method for manufacturing laminated iron core

 #29
20150325366
2015-11-12

Method of manufacturing laminated iron core

 #30
20150270762
2015-09-24

Production method for laminated iron core

 #31
20150202856
2015-07-23

Rotary lamination apparatus

 #32
20150187492
2015-07-02

Blanking die apparatus and method for manufacturing laminated iron core

 #33
20150007627
2015-01-08

Press machine controller

 #34
20140259647
2014-09-18

System for producing stacked lamina elements of an electrical machine stator

 #35
20140072396
2014-03-13

Method and apparatus for orienting a lamination

 #36
20130167696
2013-07-04

Laminated work production method

 #37
20130025430
2013-01-31

Blanking die assembly with at least one device for differentially rotating the blanking unit

 #38
20120266456
2012-10-25

Apparatus for retaining a package of laminations of an electromagnetic core in a device for the production thereof

 #39
20120241095
2012-09-27

Rotary lamination apparatus

 #40
20120048471
2012-03-01

Rotary lamination apparatus

 #41
20120019093
2012-01-26

Laminated core

 #42
20110252938
2011-10-20

Punch press device

 #43
20110048095
2011-03-03

Process and apparatus for positioning laminations

 #44
20110024489
2011-02-03

Method for punching before performing rotated lamination

 #45
20100229373
2010-09-16

Producing stacked lamina elements by combining a cut out and a stacking procedure

 #46
20100052463
2010-03-04

Method for producing ring core

 #47
20090173204
2009-07-09

Apparatus with a centering device for positioning and cutting a laminate

 #48
20090038146
2009-02-12

Die machine for manufacturing a laminated iron core

 #49
20090025203
2009-01-29

Method and apparatus for manufacturing laminated core and the laminated core

 #50
20080307634
2008-12-18

Method of manufacturing a laminated iron core

 #51
20080229799
2008-09-25

Laminated magnetic cores

 #52
20080163734
2008-07-10

DIVIDING APPARATUS FOR AUTOMATIC NOTCHING PRESSES WITH A DIRECT DRIVE

 #53
20080047131
2008-02-28

Method for manufacturing lamina stacks from a plurality of separate strips of stock material

 #54
20070271772
2007-11-29

Centering Device for Blanking Dies

 #55
20070227223
2007-10-04

Punch device

 #56
20070209175
2007-09-13

Method for producing lamination packs

 #57
20060070233
2006-04-06

Die assembly and method for manufacturing lamina stacks from a plurality of separate strips of stock material

 #58
20050050938
2005-03-10

Progressive pressing apparatus