Patents-Review.com
ClassID:

151744 ⎘

F16J9/06 - CPC Classification

Classification description:

Piston-rings, e.g. non-metallic piston-rings , seats therefor; Ring sealings of similar construction using separate springs or elastic elements expanding the rings; Springs therefor ; Expansion by wedging

Sub-classes:
Recent Application in this class:
#1
20250305582
2025-10-02

OIL RING AND METHOD FOR MANUFACTURING OIL RING

 #2
20250188855
2025-06-12

Two-Stroke Engine, Lubrication Device, and Cylinder

 #3
20250067340
2025-02-27

PISTON SEALING RING ASSEMBLY HAVING A GAP COVER ELEMENT

 #4
20230375086
2023-11-23

Piston sealing ring assembly having a gap cover element

 #5
20230358313
2023-11-09

Combination of piston rings, and combination structure of piston and piston rings

 #6
20230272854
2023-08-31

Combination of piston rings, and combination structure of piston and piston rings

 #7
20230228329
2023-07-20

OIL SCRAPER RING FOR PISTONS OF AN INTERNAL COMBUSTION ENGINE

 #8
20230220930
2023-07-13

Seal assembly for a rotary valve

 #9
20230184332
2023-06-15

Piston ring arrangement, piston compressor and method for sealing a compression chamber

 #10
20220325710
2022-10-13

Piston for reciprocating compressor having complementary sealing elements

 #11
20220282620
2022-09-08

Engine with gas exchange through piston rod

 #12
20220196011
2022-06-23

MICROPUMP HAVING A SEALING RING

 #13
20220090558
2022-03-24

Combined oil ring

 #14
20220018435
2022-01-20

Pump seal

 #15
20210388901
2021-12-16

Piston sealing ring assembly having a gap cover element

 #16
20210332885
2021-10-28

Three-part oil scraper ring

 #17
20210270368
2021-09-02

Multi-piece oil scraper ring with reduced friction

 #18
20210164568
2021-06-03

Piston ring combination

 #19
20210033192
2021-02-04

AXIALLY PRELOADED PACKING RING SETS

 #20
20210025494
2021-01-28

Piston for an internal combustion engine

 #21
20200284149
2020-09-10

Engine with work stroke and gas exchange through piston rod

 #22
20200166135
2020-05-28

Combination oil ring

 #23
20200056480
2020-02-20

Engine with work stroke and gas exchange through piston rod

 #24
20200024946
2020-01-23

Engine with work stroke and gas exchange through piston rod

 #25
20190219168
2019-07-18

Two-part oil control ring having axial stabilization and twist compensation

 #26
20190178380
2019-06-13

Two part oil control ring having oil pressure effect ridges

 #27
20190049006
2019-02-14

Piston sealing ring assembly having a gap cover element

 #28
20180106150
2018-04-19

Engine with compression and momentum stroke

 #29
20180038483
2018-02-08

Side rail

 #30
20180031127
2018-02-01

Side rail

 #31
20180023702
2018-01-25

Oil ring

 #32
20170356547
2017-12-14

Piston ring assembly

 #33
20170350508
2017-12-07

Combined oil control ring

 #34
20170328471
2017-11-16

TWO-PIECE PISTON RING

 #35
20170227126
2017-08-10

Combined oil ring

 #36
20170016536
2017-01-19

Gapless piston ring for internal combustion engine

 #37
20170016393
2017-01-19

Engine with compression and momentum stroke

 #38
20170016360
2017-01-19

Timed gas exchange in engine using piston as exhaust valve

 #39
20170016331
2017-01-19

Piston assembly for internal combustion engine

 #40
20170016330
2017-01-19

Engine with piston that overshoots cylinder wall exhaust port

 #41
20170016328
2017-01-19

Gas exchange through engine piston rod

 #42
20170002926
2017-01-05

Combination oil ring

 #43
20170002925
2017-01-05

Combination oil ring

 #44
20160290506
2016-10-06

Dual pre-load cylindrical seal

 #45
20160131132
2016-05-12

Piston Seal and Pump Including Same

 #46
20160131131
2016-05-12

Wiper seal assemblies for a reciprocating pump and methods relating thereto

 #47
20160076649
2016-03-17

Oil ring

 #48
20150360335
2015-12-17

Piston rail ring installer and method

 #49
20150323072
2015-11-12

Actuator with screw-in gland and detent structure

 #50
20150251304
2015-09-10

Sealing device for a hydraulic percussion apparatus, and hydraulic percussion apparatus comprising such a sealing device

 #51
20150184748
2015-07-02

Oil control ring assembly

 #52
20150184747
2015-07-02

Combined oil control ring

 #53
20150145218
2015-05-28

Combined oil control ring

 #54
20140361492
2014-12-11

SYSTEM, METHOD AND APPARATUS FOR SPRING-ENERGIZED DYNAMIC SEALING ASSEMBLY

 #55
20140326131
2014-11-06

Dual ring configuration for a stationary seal

 #56
20140246834
2014-09-04

Combination oil ring

 #57
20140062030
2014-03-06

Combined oil ring

 #58
20130213220
2013-08-22

Piston ring for an internal combustion engine

 #59
20130213219
2013-08-22

Piston ring for an internal combustion engine

 #60
20130213217
2013-08-22

Piston ring for an internal combustion engine

 #61
20130174726
2013-07-11

Piston ring with improved lubrication delivery

 #62
20130154197
2013-06-20

Seal arrangement

 #63
20130014725
2013-01-17

Internal Combustion Engine

 #64
20110155092
2011-06-30

Piston/piston ring arrangement

 #65
20110140369
2011-06-16

SYSTEM, METHOD AND APPARATUS FOR SPRING-ENERGIZED DYNAMIC SEALING ASSEMBLY

 #66
20110049811
2011-03-03

Liquid-operated cylinder

 #67
20100164182
2010-07-01

MULTI-PART OIL SCRAPER RING FOR INTERNAL COMBUSTION ENGINES

 #68
20080309022
2008-12-18

Two-Part Oil Scraper Ring for Internal Combustion Engines

 #69
20080098884
2008-05-01

Fluidic actuator for application inside turbomachinery

 #70
20080060604
2008-03-13

Internal combustion engine

 #71
20070193553
2007-08-23

Internal combustion engine

 #72
20070193552
2007-08-23

Internal combustion engine

 #73
20070193551
2007-08-23

Internal combustion engine

 #74
20070193550
2007-08-23

Internal combustion engine

 #75
20070193549
2007-08-23

Internal combustion engine

 #76
20050279802
2005-12-22

Seal for portable fastener driving tool

 #77
17550152
2022-12-06

Piston ring for floating piston in a thermal energy storage system