ClassID:

151752

F16J9/068 - 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; Rings with a flat annular side rail; Spring expander from sheet metal corrugated in the axial direction

Recent Application in this class:
#1
20220412459
2022-12-29

Oil control ring

#2
20210270368
2021-09-02

Multi-piece oil scraper ring with reduced friction

#3
20210164566
2021-06-03

Oil control ring and spacer expander

#4
20210003217
2021-01-07

Spacer spring for a three-part oil scraper ring and three-part oil scraper ring having said spacer spring

#5
20200124174
2020-04-23

COMBINED OIL CONTROL RING

#6
20200072352
2020-03-05

Oil scraper ring spring for an oil scraper ring and oil scraper ring

#7
20190360585
2019-11-28

Combination oil ring

#8
20190360584
2019-11-28

Segment, combination oil ring, and manufacturing method for a segment

#9
20190113139
2019-04-18

Multiple-piece oil stripping piston ring with reduced friction

#10
20180112775
2018-04-26

Combined oil control ring

#11
20180094726
2018-04-05

Combined oil control ring

#12
20180031127
2018-02-01

Side rail

#13
20170227126
2017-08-10

Combined oil ring

#14
20170175893
2017-06-22

Combination oil ring

#15
20170002926
2017-01-05

Combination oil ring

#16
20170002925
2017-01-05

Combination oil ring

#17
20170001503
2017-01-05

Sealing member of door for car

#18
20150184748
2015-07-02

Oil control ring assembly

#19
20150184747
2015-07-02

Combined oil control ring

#20
20150167844
2015-06-18

Combined oil control ring

#21
20150145218
2015-05-28

Combined oil control ring

#22
20140265149
2014-09-18

Combined oil control ring

#23
20140246834
2014-09-04

Combination oil ring

#24
20140062030
2014-03-06

Combined oil ring

#25
20110221141
2011-09-15

Combination oil ring

#26
20110204575
2011-08-25

Piston ring

#27
20090250880
2009-10-08

Oil-control ring for an internal combustion engine

#28
20090013866
2009-01-15

Three-piece oil ring and combination of the three-piece oil ring and piston

#29
20080017025
2008-01-24

Variable tension ring mechanism

#30
20060169135
2006-08-03

Spacer expander

#31
20060081126
2006-04-20

Oil ring, manufacturing method thereof, and piston structure using the oil ring

#32
20060061043
2006-03-23

Three piece-combined oil ring

#33
20060049583
2006-03-09

Oil-control ring of piston