ClassID:

39237

B21K1/185 - CPC Classification

Classification description:

Making machine elements pistons or plungers with cooling channels

Recent Application in this class:
#1
20220178328
2022-06-09

Forming near-net shape single-piece piston blanks

#2
20200346278
2020-11-05

Production method, piston blank, piston and axial piston machine having said piston

#3
20200116102
2020-04-16

Piston cooling gallery shaping to reduce piston temperature

#4
20190344330
2019-11-14

Hot forming of cooling galleries in steel pistons

#5
20190323450
2019-10-24

Cooling channel having dam and funnel

#6
20190178204
2019-06-13

Methods for forging a piston blank

#7
20190091757
2019-03-28

Hot forming of cooling galleries in steel pistons

#8
20190022739
2019-01-24

Piston Having Three Ring Grooves And A Further Groove Having A Joint

#9
20180328311
2018-11-15

Heat Input Zone Of A Piston, Having A Groove Flank Positioned In Said Heat Input Zone

#10
20180243817
2018-08-30

Piston of an internal combustion engine having alkali metal cooling and method for production thereof

#11
20180230937
2018-08-16

Method for Producing a Monoblock Piston, and Monoblock Piston

#12
20180119636
2018-05-03

Method for manufacturing a piston

#13
20170335793
2017-11-23

Complex-shaped forged piston oil galleries

#14
20170232501
2017-08-17

Hot forming of cooling galleries in steel pistons

#15
20170173665
2017-06-22

Method of Producing a Cooling Channel System for Internal Combustion Engines and Piston Produced in This Way

#16
20170107936
2017-04-20

Method for producing a piston

#17
20160319769
2016-11-03

Methods for forging a piston blank

#18
20160288275
2016-10-06

Method for producing a piston for an internal combustion engine and piston produced by said method

#19
20160281637
2016-09-29

Method for producing a piston for an internal combustion engine and piston produced by said method

#20
20160281636
2016-09-29

Method for producing a piston for an internal combustion engine and piston produced by said method

#21
20160258382
2016-09-08

Asymmetric piston

#22
20160229007
2016-08-11

Method for the production of a piston for an internal combustion engine

#23
20160222913
2016-08-04

Complex-shaped forged piston oil galleries

#24
20160208735
2016-07-21

Complex-shaped forged piston oil galleries

#25
20150101191
2015-04-16

Method for the production of a piston for an internal combustion engine

#26
20150020566
2015-01-22

Forging device for the production of a piston blank, and method for the production of the piston blank by means of said forging device

#27
20140317924
2014-10-30

Method for bonding piston components

#28
20140230646
2014-08-21

Complex-shaped forged piston oil galleries

#29
20140202001
2014-07-24

Method for the production of a piston for an internal combustion engine

#30
20130133610
2013-05-30

METHOD FOR PRODUCING A COOLING CHANNEL SYSTEM FOR INTERNAL COMBUSTION ENGINES AND PISTON PRODUCED IN THIS WAY

#31
20130000590
2013-01-03

METHOD FOR PRODUCING A PISTON FOR AN INTERNAL COMBUSTION ENGINE AND PISTON THAT CAN BE PRODUCED BY MEANS OF SAID METHOD

#32
20120222305
2012-09-06

Method for the production of a piston for an internal combustion engine

#33
20120222304
2012-09-06

Method for the production of a piston for an internal combustion engine

#34
20120145112
2012-06-14

Piston for an internal combustion engine and method for its production

#35
20110192023
2011-08-11

Method for the production of a piston for an internal combustion engine

#36
20110083633
2011-04-14

Method for the production of a piston for internal combustion engines and piston for an internal combustion engine

#37
20110030214
2011-02-10

PISTON ASSEMBLY MULTIPLE STEP FORMING PROCESS

#38
20100299922
2010-12-02

COOLING DUCT PISTON FOR AN INTERNAL COMBUSTION ENGINE

#39
20100006055
2010-01-14

Method for the production of a piston for internal combustion engines and piston for an internal combustion engine

#40
20090241769
2009-10-01

Cooling channel piston for an internal combustion engine and method for the production thereof

#41
20090071001
2009-03-19

Method for producing piston for internal-combustion engine

#42
20080273936
2008-11-06

Method for Producing Rotationally Symmetrical, undercut Contours

#43
20070107215
2007-05-17

Method for producing a piston for an internal combustion engine

#44
20060005701
2006-01-12

One-piece steel piston

#45
20060005700
2006-01-12

One-piece steel piston

#46
20060000087
2006-01-05

Method of producing a cooling channel piston for an internal combustion engine

#47
20050283976
2005-12-29

Method for manufacturing internal combustion engine piston