ClassID:

38729

B21D41/02 - CPC Classification

Classification description:

Application of procedures in order to alter the diameter of tube ends Enlarging

Sub-classes:
Recent Application in this class:
#1
20260124665
2026-05-07

INTERMITTENT ROTATION STRUCTURE FOR EXTENSION TOOL, AND EXTENSION TOOL

#2
20250381725
2025-12-18

PIPE EXPANDER

#3
20250276485
2025-09-04

PEX TUBING EXPANDER HEAD

#4
20250153237
2025-05-15

EARLY WARNING METHOD FOR FATIGUE DAMAGE STATE OF TIE ROD IN DIAMETER EXPANDING MACHINE BASED ON OIL PRESSURE OF POWER CYLINDER

#5
20250050406
2025-02-13

ELECTRIC PIPE EXPANDER

#6
20230201906
2023-06-29

PIPE MACHINING APPARATUS

#7
20230071809
2023-03-09

Method for molding screw thread of metal pipe

#8
20220288667
2022-09-15

HYDRAULIC TUBE EXPANDER AND METHOD OF USE

#9
20220266503
2022-08-25

PEX TUBING EXPANDER HEAD

#10
20220203430
2022-06-30

Method and apparatus for can expansion

#11
20220134403
2022-05-05

APPARATUS FOR THE ORBITAL CUTTING AND CALIBRATION OF TUBES

#12
20220023927
2022-01-27

A FORMING DIE FOR FORMING AN END OF A TUBE AND A METHOD FOR FORMING AN END OF A TUBE

#13
20210379643
2021-12-09

Bead forming method and structural member

#14
20210245228
2021-08-12

Pipe Flaring Device

#15
20210197460
2021-07-01

Inner cavity near-net-shaping device for micro cast-rolling additive manufacturing of large-scale special-shaped pipe

#16
20210170473
2021-06-10

Tool device for expanding the end of a tube

#17
20210154725
2021-05-27

Swage tool

#18
20210101201
2021-04-08

Hydraulic tube expander and method of use

#19
20200287342
2020-09-10

Metal foil flaring apparatus

#20
20200271252
2020-08-27

Pipe coupling

#21
20190382073
2019-12-19

Increasing the internal pivot radii for angle-joined motorcycle handle bars

#22
20190358695
2019-11-28

COLD EXPANSION TOOL FOR EXPANDING A BORE THROUGH A PART

#23
20190257588
2019-08-22

Heat exchanger

#24
20190168282
2019-06-06

Expanding tool and method

#25
20190076903
2019-03-14

TUBE DIAMETER EXPANDING METHOD AND FORMING APPARATUS

#26
20190001393
2019-01-03

Swage tool

#27
20180361449
2018-12-20

Mechanical spreader

#28
20180281046
2018-10-04

Hydraulic tube expander and method of use

#29
20180257124
2018-09-13

PIPE EXPANDING PUNCH

#30
20180250728
2018-09-06

Method and apparatus for can expansion

#31
20180229290
2018-08-16

Device for applying a pressing force, and a pair of pressing jaws

#32
20180170156
2018-06-21

Door impact beam and manufacturing method thereof

#33
20180140118
2018-05-24

IRREGULAR ALUMINUM CUP AND METHOD FOR MANUFACTURING THE SAME

#34
20180065163
2018-03-08

Form-rolling device

#35
20180017190
2018-01-18

Metal pipe having thickened end portion, and method of manufacturing same

#36
20170348754
2017-12-07

Expanding tool and method

#37
20170320116
2017-11-09

Method of manufacturing flaring-processed metal pipe

#38
20170157877
2017-06-08

Method for production of a combustion chamber tube for restraint systems in vehicles and device for implementation of the method

#39
20170136515
2017-05-18

Method of making a hose connection for a hose

#40
20170135720
2017-05-18

Medical needle manufacturing method, medical needle manufacturing apparatus, and medical needle

#41
20170129001
2017-05-11

Pipe end forming methods and pipe clamp

#42
20170056962
2017-03-02

Process of manufacturing wrenches

#43
20170056954
2017-03-02

Hand held flaring tool

#44
20170021401
2017-01-26

Method for Forming an End Part of a Tube, Respective Device for Performing the Method, Rolling Body, and Flange on an End Part of a Tube Formed with the Method

#45
20170016561
2017-01-19

METHOD FOR THE PRODUCTION OF A CONVEYING PIPE FOR THE TRANSPORT OF SOLIDS, AND CONVEYING PIPE FOR THE TRANSPORT OF SOLIDS

#46
20160245437
2016-08-25

Method for forming fastening collar

#47
20160223107
2016-08-04

Pipe connection

#48
20160114440
2016-04-28

Heat transfer tube expansion apparatus

#49
20160089623
2016-03-31

Method of manufacturing filter pipe for vehicle and filter pipe for vehicle

#50
20160054069
2016-02-25

Heat exchanger having a mechanically assembled header

#51
20160008866
2016-01-14

Hydraulic tube expander and method of use

#52
20150360278
2015-12-17

Swage apparatus and swage method

#53
20150007629
2015-01-08

Tube end molding method

#54
20140261840
2014-09-18

Manufacture method of tubular member and tubular member manufactured by the same

#55
20140259581
2014-09-18

Piping system

#56
20140208816
2014-07-31

Apparatus for correcting deformation of reaction vessel and method for correcting deformation therefor

#57
20140208791
2014-07-31

Heating medium utilizing apparatus

#58
20140044983
2014-02-13

Stretched strips for spacer and sealed unit

#59
20130333429
2013-12-19

Pipe end correction method of seamless pipe made of high CR stainless steel

#60
20130292939
2013-11-07

Fitting for thick-walled pipes and method for its production

#61
20130213105
2013-08-22

METHOD AND APPARATUS FOR PRESSURE EXPANSION OF TUBING IN COIL ASSEMBLAGE

#62
20130156496
2013-06-20

Coupling parts for connecting a driving device to an expander head

#63
20130140739
2013-06-06

Tool and method for expanding a pipe end

#64
20130133394
2013-05-30

Hand held flaring tool

#65
20130074342
2013-03-28

HEAT EXCHANGER TUBE AND METHOD OF MAKING

#66
20130055785
2013-03-07

THERMOFORMING EQUIPMENT FOR THE FORMATION OF METALLIC PACKAGES WITH PRE-FLAP FORMATION

#67
20120214016
2012-08-23

CONSTRAINED METAL FLANGES AND METHODS FOR MAKING THE SAME

#68
20120210825
2012-08-23

Manufacturing Process of a Wheel Nut Wrench

#69
20120167654
2012-07-05

Tube flaring tool

#70
20120131981
2012-05-31

Cold Forged Stub End

#71
20120043340
2012-02-23

CONTAINER WITH SEAMED CLOSURE AND METHOD AND APPARATUS FOR ITS MANUFACTURE

#72
20120001414
2012-01-05

Fitting for thick-walled pipes and method for its production

#73
20110232355
2011-09-29

Dynamic load expansion test bench and method of expanding a tubular

#74
20110151045
2011-06-23

Expansion tool device for pliers or machine for producing sockets at the ends of pipes made out of plastic or composite material

#75
20110104512
2011-05-05

Stretched strips for spacer and sealed unit

#76
20110020569
2011-01-27

PROCESS FOR CONNECTING A TUBE STABILIZER PART OF A DIVIDED TUBE STABILIZER HAVING AN INTERMEDIATE ELEMENT, AND A TUBE STABILIZER

#77
20110005356
2011-01-13

Wheel nut wrench and manufacturing process thereof

#78
20100294014
2010-11-25

Process and apparatus for producing a hollow body, and hollow body

#79
20100257913
2010-10-14

Resilient Anchor

#80
20100229993
2010-09-16

REINFORCEMENT FOR EXHAUST SYSTEM CONNECTION INTERFACE

#81
20100180660
2010-07-22

Extension for a pipe expander

#82
20100143077
2010-06-10

SPINNING PROCESS FOR METALLIC PACKAGES FORMING WITH PRE-FLAP FORMING AND SPINNING EQUIPMENT FOR METALLIC PACKAGES FORMING WITH PRE-FLAP FORMING

#83
20100038063
2010-02-18

Heat exchanger, use, and manufacturing process for a heat exchanger

#84
20090255310
2009-10-15

Multi-directionally swept beam, roll former, and method

#85
20090152065
2009-06-18

Tube expanding method and apparatus of damper tube

#86
20090139594
2009-06-04

Spherical tube end form for a fluid connection system

#87
20090139295
2009-06-04

Method for manufacturing eccentrically expanded pipe

#88
20090090159
2009-04-09

Pipe expanding method and pipe expanding device for steel pipe

#89
20090038366
2009-02-12

Mechanical pipe-end expander and a method of manufacturing seamless steel pipe

#90
20080315631
2008-12-25

Chassis frame and method of manufacturing chassis frame

#91
20080302164
2008-12-11

Method and device for manufacturing pipe connectors

#92
20080282758
2008-11-20

Apparatus for can expansion

#93
20080236233
2008-10-02

Rotary flaring tool and method of use

#94
20080216544
2008-09-11

Plug, method of expanding inside diameter of metal pipe or tube using such plug, method of manufacturing metal pipe or tube, and metal pipe or tube

#95
20080196468
2008-08-21

I/O endforming tool for forming tubes and method of manufacture thereof

#96
20080160130
2008-07-03

Expansion tool device for pliers or machine for producing sockets at the ends of pipes made out of plastic or composite material

#97
20070256467
2007-11-08

Method for producing a coupling on a pipe and device for producing said coupling

#98
20070151360
2007-07-05

EXPANDABLE TUBULAR

#99
20070062236
2007-03-22

Cracked barrel detection system

#100
20070062235
2007-03-22

Crack tester for flared ends

#101
20060243018
2006-11-02

Tube end forming and coping method and apparatus

#102
20060117830
2006-06-08

Transition forming machine

#103
20050246896
2005-11-10

Initial setting method of refrigerant entrance/exit (inlet/outlet) pipe onto header pipe for heat exchanger

#104
20050145001
2005-07-07

Tube expanding apparatus

#105
20050103090
2005-05-19

Release mechanism for end forming machine

#106
19265329
2025-12-30

Coldwork holes with seamless sleeve and uniform expansion

#107
15481989
2018-07-17

Quick positioning tube expander

#108
15375934
2017-07-04

Pipe expanding device

#109
14995095
2017-04-25

Pipe positioning device

#110
13412605
2015-06-02

Flaring tool