IP Library › Granted Patent US 12,196,320
Granted Patent B2
US 12,196,320 · App. 17/913,153 · Granted Jan 14, 2025

Sliding component

Inventors: Tadatsugu Imura (Tokyo, JP); Iwa Ou (Tokyo, JP); Shogo Fukuda (Tokyo, JP); Kenta Uchida (Tokyo, JP)
Assignee: EAGLE INDUSTRY CO., LTD.
F16J15/3412F16C33/74F16J15/3424
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 12,196,320
App. No.
17/913,153
Granted
Jan 14, 2025
Kind
B2
Abstract

In a sliding component formed in an annular shape and disposed at a relatively rotating position of a rotating machine and sliding relative to an opposite sliding component, a sliding surface of the sliding component is provided with a conduction groove communicating with an outer space and a dynamic pressure generation groove communicating with the conduction groove, extending in a circumferential direction, and having a closed terminating end portion and at least a part of a bottom portion of the conduction groove is provided with an inclined surface inclined with respect to a radial direction.

Claims (43)

1. A sliding component formed in an annular shape and disposed at a relatively rotating position of a rotating machine and sliding relative to an opposite sliding component,

wherein a sliding surface of the sliding component is provided with a conduction groove having an opening which communicates with an outer space and a dynamic pressure generation groove communicating with the conduction groove, extending in a circumferential direction, and having a closed terminating end portion,

wherein at least a part of a bottom portion of the conduction groove is provided with an inclined surface inclined with respect to a radial direction,

wherein the conduction groove has a protruded end portion which is protruded from the dynamic pressure generation groove in the radial direction toward a radial end side opposed to the opening, and

wherein the protruded end portion is a closed end surrounded by a land portion.

2. The sliding component according to claim 1 ,

wherein the inclined surface is formed entirely through the bottom portion of the conduction groove in the radial direction.

3. The sliding component according to claim 2 ,

wherein the conduction groove has a first radial end portion on a side of the outer space and a second radial end portion on a side opposite to the outer space, a circumferential width of the first radial end portion being larger than a circumferential width of the second radial end portion.

4. The sliding component according to claim 2 ,

wherein the dynamic pressure generation groove wholly communicates with a portion of the conduction groove shallower than the inclined surface.

5. The sliding component according to claim 2 ,

wherein the inclined surface is continuously connected to the sliding surface.

6. The sliding component according to claim 2 ,

wherein a side wall portion of the conduction groove has an arc shape when viewed from an axial direction.

7. The sliding component according to claim 2 ,

wherein the dynamic pressure generation groove communicates with the outer space.

8. The sliding component according to claim 2 ,

wherein the dynamic pressure generation groove and the outer space are separated from each other by a land portion.

9. The sliding component according to claim 1 ,

wherein the conduction groove has a first radial end portion on a side of the outer space and a second radial end portion on a side opposite to the outer space, a circumferential width of the first radial end portion being larger than a circumferential width of the second radial end portion.

10. The sliding component according to claim 9 ,

wherein the dynamic pressure generation groove wholly communicates with a portion of the conduction groove shallower than the inclined surface.

11. The sliding component according to claim 9 ,

wherein the inclined surface is continuously connected to the sliding surface.

12. The sliding component according to claim 9 ,

wherein a side wall portion of the conduction groove has an arc shape when viewed from an axial direction.

13. The sliding component according to claim 9 ,

wherein the dynamic pressure generation groove communicates with the outer space.

14. The sliding component according to claim 9 ,

wherein the dynamic pressure generation groove and the outer space are separated from each other by a land portion.

15. The sliding component according to claim 1 ,

wherein the dynamic pressure generation groove wholly communicates with a portion of the conduction groove shallower than the inclined surface.

16. The sliding component according to claim 15 ,

wherein the inclined surface is continuously connected to the sliding surface.

17. The sliding component according to claim 1 ,

wherein the inclined surface is continuously connected to the sliding surface.

18. The sliding component according to claim 1 ,

wherein a side wall portion of the conduction groove has an arc shape when viewed from an axial direction.

19. The sliding component according to claim 1 ,

wherein the dynamic pressure generation groove communicates with the outer space.

20. The sliding component according to claim 1 ,

wherein the dynamic pressure generation groove and the outer space are separated from each other by a land portion.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Feb 22, 2023
From: IMURA, TADATSUGU; OU, IWA; FUKUDA, SHOGO; UCHIDA, KENTA
To: EAGLE INDUSTRY CO., LTD.
Reel/Frame 062773/0610 →
Priority Claims (1)
JP 2020-062821 · Mar 31, 2020 · national
Continuity (1)
Related Publication 20230175587A1 · Jun 8, 2023
References Cited (267)
US 3383116A · Carter · 1968 [cited by applicant]
US 3527465A · Guinard · 1970 [cited by applicant]
US 3675935A · Ludwig · 1972 [cited by applicant]
US 3704019A · McHugh · 1972 [cited by applicant]
US 3782737A · Ludwig et al. · 1974 [cited by applicant]
US 4056478A · Capelli · 1977 [cited by applicant]
US 4071253A · Heinen et al. · 1978 [cited by applicant]
US 4523764A · Albers et al. · 1985 [cited by applicant]
US 4889348A · Amundson · 1989 [cited by applicant]
US 5071141A · Lai et al. · 1991 [cited by applicant]
US 5092612A · Victor et al. · 1992 [cited by applicant]
US 5174584A · Lahrman · 1992 [cited by applicant]
US 5180173A · Kimura et al. · 1993 [cited by applicant]
US 5224714A · Kimura · 1993 [cited by applicant]
US 5447316A · Matsui · 1995 [cited by applicant]
US 5556111A · Sedy · 1996 [cited by applicant]
US 5558341A · McNickle · 1996 [cited by applicant]
US 5769604A · Gardner et al. · 1998 [cited by applicant]
US 5834094A · Etsion et al. · 1998 [cited by applicant]
US 5947481A · Young · 1999 [cited by applicant]
US 5952080A · Etsion et al. · 1999 [cited by applicant]
US 6002100A · Etsion · 1999 [cited by applicant]
US 6046430A · Etsion · 2000 [cited by applicant]
US 6135458A · Fuse · 2000 [cited by applicant]
US 6152452A · Wang · 2000 [cited by applicant]
US 6213473B1 · Lebeck · 2001 [cited by applicant]
US 6446976B1 · Key et al. · 2002 [cited by applicant]
US 6692006B2 · Holder · 2004 [cited by applicant]
US 6726213B2 · Wang · 2004 [cited by applicant]
US 7258346B2 · Tejima · 2007 [cited by applicant]
US 7377518B2 · Lai · 2008 [cited by applicant]
US 7758051B2 · Roberts-Haritonov · 2010 [cited by applicant]
US 7931277B2 · Garrison · 2011 [cited by applicant]
US 8100405B2 · Kneeland et al. · 2012 [cited by applicant]
US 8342534B2 · Vasagar · 2013 [cited by applicant]
US 8585060B2 · Oshii et al. · 2013 [cited by applicant]
US 9151390B2 · Hosoe · 2015 [cited by applicant]
US 9169931B2 · Tokunaga · 2015 [cited by applicant]
US 9228660B2 · Hosoe · 2016 [cited by applicant]
US 9353867B2 · Itadani et al. · 2016 [cited by applicant]
US 9494239B2 · Hosoe · 2016 [cited by applicant]
US 9512923B2 · Inoue et al. · 2016 [cited by applicant]
US 9574667B2 · Takahashi et al. · 2017 [cited by applicant]
US 9772037B2 · Itadani et al. · 2017 [cited by applicant]
US 9784372B2 · Iguchi · 2017 [cited by applicant]
US 9863473B2 · Hosoe et al. · 2018 [cited by applicant]
US 9958010B2 · Itadani · 2018 [cited by applicant]
US 9982715B2 · Gorges et al. · 2018 [cited by applicant]
US 10054230B2 · Katori et al. · 2018 [cited by applicant]
US 10132411B2 · Hosoe et al. · 2018 [cited by applicant]
US 10337620B2 · Tokunaga et al. · 2019 [cited by applicant]
US 10443737B2 · Itadani · 2019 [cited by applicant]
US 10495228B2 · Itadani · 2019 [cited by applicant]
US 10865883B2 · Seki et al. · 2020 [cited by applicant]
US 11248706B2 · Imura · 2022 [cited by applicant]
US 11320052B2 · Imura et al. · 2022 [cited by applicant]
US 11530749B2 · Kimura et al. · 2022 [cited by applicant]
US 11603934B2 · Imura · 2023 [cited by examiner]
US 20020014743A1 · Zheng · 2002 [cited by applicant]
US 20020093141A1 · Wang · 2002 [cited by applicant]
US 20020158416A1 · Hosanna · 2002 [cited by applicant]
US 20040080112A1 · Tejima · 2004 [cited by applicant]
US 20050212217A1 · Tejima · 2005 [cited by applicant]
US 20050263963A1 · Lai · 2005 [cited by applicant]
US 20070228664A1 · Anand · 2007 [cited by applicant]
US 20070267820A1 · Martin · 2007 [cited by applicant]
US 20070275267A1 · Sabouni · 2007 [cited by applicant]
US 20070296156A1 · Yanagisawa et al. · 2007 [cited by applicant]
US 20080050260A1 · Iwanami et al. · 2008 [cited by applicant]
US 20080100001A1 · Flaherty · 2008 [cited by applicant]
US 20090200749A1 · Teshima · 2009 [cited by applicant]
US 20110215531A1 · Tokunaga et al. · 2011 [cited by applicant]
US 20110215535A1 · Vasagar · 2011 [cited by applicant]
US 20110305871A1 · Tabuchi · 2011 [cited by applicant]
US 20120018957A1 · Watanabe · 2012 [cited by applicant]
US 20120217705A1 · Hosoe · 2012 [cited by applicant]
US 20130168928A1 · Schrufer · 2013 [cited by applicant]
US 20130209011A1 · Tokunaga · 2013 [cited by applicant]
US 20130323105A1 · Chao et al. · 2013 [cited by applicant]
US 20140159314A1 · Hosoe · 2014 [cited by applicant]
US 20140197600A1 · Hosoe · 2014 [cited by applicant]
US 20140217676A1 · Hosoe et al. · 2014 [cited by applicant]
US 20140319776A1 · Theike et al. · 2014 [cited by applicant]
US 20150115540A1 · Tokunaga · 2015 [cited by applicant]
US 20150123350A1 · Itadani · 2015 [cited by applicant]
US 20150167847A1 · Tokunaga · 2015 [cited by applicant]
US 20150345642A1 · Haas · 2015 [cited by applicant]
US 20150377297A1 · Tokunaga et al. · 2015 [cited by applicant]
US 20160033045A1 · Itadani et al. · 2016 [cited by applicant]
US 20160097457A1 · Sun et al. · 2016 [cited by applicant]
US 20170146014A1 · Ohta et al. · 2017 [cited by applicant]
US 20170241549A1 · Itadani · 2017 [cited by applicant]
US 20170261107A1 · Martin · 2017 [cited by applicant]
US 20170350407A1 · Yamamoto et al. · 2017 [cited by applicant]
US 20180017163A1 · Hosoe et al. · 2018 [cited by applicant]
US 20180051809A1 · Yoshida · 2018 [cited by examiner]
US 20180073394A1 · Tokunaga et al. · 2018 [cited by applicant]
US 20180112711A1 · Itadani · 2018 [cited by applicant]
US 20180128377A1 · Tukunaga et al. · 2018 [cited by applicant]
US 20180128378A1 · Tokunaga et al. · 2018 [cited by applicant]
US 20180135699A1 · Tokunaga et al. · 2018 [cited by applicant]
US 20180172162A1 · Tokunaga et al. · 2018 [cited by applicant]
US 20180195618A1 · Itadani et al. · 2018 [cited by applicant]
US 20180292010A1 · Ohya et al. · 2018 [cited by applicant]
US 20180299015A1 · Itadani · 2018 [cited by applicant]
US 20190169988A1 · Tokunaga et al. · 2019 [cited by applicant]
US 20190170257A1 · Hosoe et al. · 2019 [cited by applicant]
US 20190285115A1 · Negishi et al. · 2019 [cited by applicant]
US 20190301522A1 · Negishi et al. · 2019 [cited by applicant]
US 20190331162A1 · Negishi · 2019 [cited by applicant]
US 20200224768A1 · Imura · 2020 [cited by applicant]
US 20200240470A1 · Sorgenti · 2020 [cited by applicant]
US 20200332901A1 · Imura · 2020 [cited by applicant]
US 20210041026A1 · Imura · 2021 [cited by applicant]
US 20210048062A1 · Masumi et al. · 2021 [cited by applicant]
US 20210048106A1 · Imura et al. · 2021 [cited by applicant]
US 20210080009A1 · Kimura et al. · 2021 [cited by applicant]
US 20210116030A1 · Kimura et al. · 2021 [cited by applicant]
US 20210164571A1 · Kimura · 2021 [cited by examiner]
US 20210364034A1 · Okada · 2021 [cited by applicant]
US 20220056949A1 · Ikeda et al. · 2022 [cited by applicant]
US 20220128088A1 · Suzuki · 2022 [cited by examiner]
US 20230027772A1 · Suzuki et al. · 2023 [cited by applicant]
CN 1245552 · 2000 [cited by applicant]
CN 2460801 · 2001 [cited by applicant]
CN 1401924 · 2003 [cited by applicant]
CN 101644333 · 2010 [cited by applicant]
CN 201496542 · 2010 [cited by applicant]
CN 101793169 · 2010 [cited by applicant]
CN 101793324 · 2010 [cited by applicant]
CN 101861485 · 2010 [cited by applicant]
CN 203098871 · 2013 [cited by applicant]
CN 103557229 · 2014 [cited by applicant]
CN 103557334 · 2014 [cited by applicant]
CN 203641506 · 2014 [cited by applicant]
CN 104169622 · 2014 [cited by applicant]
CN 104321568 · 2015 [cited by applicant]
CN 104685273 · 2015 [cited by applicant]
CN 106029294 · 2016 [cited by applicant]
CN 205877184 · 2017 [cited by applicant]
CN 205877198 · 2017 [cited by applicant]
CN 106439023 · 2017 [cited by applicant]
CN 107489770 · 2017 [cited by applicant]
CN 206802309 · 2017 [cited by applicant]
CN 107906206 · 2018 [cited by applicant]
CN 207740464 · 2018 [cited by applicant]
CN 109237042 · 2019 [cited by applicant]
CN 110770456 · 2020 [cited by applicant]
CN 110925426 · 2020 [cited by applicant]
CN 111656065 · 2020 [cited by applicant]
DE 3223703 · 1982 [cited by applicant]
DE 102008038396 · 2010 [cited by applicant]
EP 0369295 · 1988 [cited by applicant]
EP 0518681 · 1992 [cited by applicant]
EP 0637706 · 1993 [cited by applicant]
EP 2138225 · 2009 [cited by applicant]
EP 2754931 · 2014 [cited by applicant]
EP 3112078 · 2017 [cited by applicant]
EP 3196516 · 2017 [cited by applicant]
EP 3217049 · 2017 [cited by applicant]
EP 3273117 · 2018 [cited by applicant]
EP 3396186 · 2018 [cited by applicant]
EP 3575621 · 2019 [cited by applicant]
EP 3575643 · 2019 [cited by applicant]
EP 3650722 · 2020 [cited by applicant]
EP 3653913 · 2020 [cited by applicant]
FR 2342440 · 1997 [cited by applicant]
GB 1509482 · 1978 [cited by applicant]
GB 2263952 · 1993 [cited by applicant]
JP S51034974 · 1976 [cited by applicant]
JP S52143571 · 1977 [cited by applicant]
JP 57163770 · 1982 [cited by applicant]
JP S59195253 · 1984 [cited by applicant]
JP S59195254 · 1984 [cited by applicant]
JP S618402 · 1986 [cited by applicant]
JP S63134883 · 1988 [cited by applicant]
JP S63190975 · 1988 [cited by applicant]
JP H0216381 · 1990 [cited by applicant]
JP H02236067 · 1990 [cited by applicant]
JP H02136863 · 1990 [cited by applicant]
JP H0450559 · 1992 [cited by applicant]
JP H04337165 · 1992 [cited by applicant]
JP H04362289 · 1992 [cited by applicant]
JP H0560247 · 1993 [cited by applicant]
JP H05296248 · 1993 [cited by applicant]
JP H0590049 · 1993 [cited by applicant]
JP H0617941 · 1994 [cited by applicant]
JP H06117547 · 1994 [cited by applicant]
JP H06174107 · 1994 [cited by applicant]
JP H06323442 · 1994 [cited by applicant]
JP H06105105 · 1994 [cited by applicant]
JP H0743038 · 1995 [cited by applicant]
JP 989119 · 1997 [cited by applicant]
JP 9292034 · 1997 [cited by applicant]
JP H10281299 · 1998 [cited by applicant]
JP H10292867 · 1998 [cited by applicant]
JP H10339286 · 1998 [cited by applicant]
JP H11132163 · 1999 [cited by applicant]
JP H11287329 · 1999 [cited by applicant]
JP 3066367 · 2000 [cited by applicant]
JP 200112458 · 2001 [cited by applicant]
JP 2003343730 · 2003 [cited by applicant]
JP 2005155894 · 2005 [cited by applicant]
JP 2005180652 · 2005 [cited by applicant]
JP 2005315391 · 2005 [cited by applicant]
JP 2005337503 · 2005 [cited by applicant]
JP 20069614 · 2006 [cited by applicant]
JP 200677899 · 2006 [cited by applicant]
JP 200690524 · 2006 [cited by applicant]
JP 2006183702 · 2006 [cited by applicant]
JP 2006316677 · 2006 [cited by applicant]
JP 2007162045 · 2007 [cited by applicant]
JP 200851018 · 2008 [cited by applicant]
JP 200851030 · 2008 [cited by applicant]
JP 2008106940 · 2008 [cited by applicant]
JP 201174931 · 2011 [cited by applicant]
JP 2011185292 · 2011 [cited by applicant]
JP 20122295 · 2012 [cited by applicant]
JP 2012062534 · 2012 [cited by applicant]
JP 201282794 · 2012 [cited by applicant]
JP 2012122135 · 2012 [cited by applicant]
JP 2013167216 · 2013 [cited by applicant]
JP 2013213545 · 2013 [cited by applicant]
JP 2014529052 · 2014 [cited by applicant]
JP 2015063647 · 2015 [cited by applicant]
JP 201568330 · 2015 [cited by applicant]
JP 5693599 · 2015 [cited by applicant]
JP 2015183631 · 2015 [cited by applicant]
JP 201661208 · 2016 [cited by applicant]
JP 201680090 · 2016 [cited by applicant]
JP 5960145 · 2016 [cited by applicant]
WO WO2006051702 · 2003 [cited by applicant]
WO WO2011115073 · 2011 [cited by applicant]
WO WO2012046749 · 2012 [cited by applicant]
WO WO2013035503 · 2013 [cited by applicant]
WO WO2013053411 · 2013 [cited by applicant]
WO WO2014061544 · 2014 [cited by applicant]
WO WO2014148316 · 2014 [cited by applicant]
WO WO2014148317 · 2014 [cited by applicant]
WO WO2014174725 · 2014 [cited by applicant]
WO WO2015111707 · 2015 [cited by applicant]
WO WO2016035860 · 2016 [cited by applicant]
WO WO2016167262 · 2016 [cited by applicant]
WO WO2016186015 · 2016 [cited by applicant]
WO WO2016186019 · 2016 [cited by applicant]
WO WO2016186020 · 2016 [cited by applicant]
WO WO2016203878 · 2016 [cited by applicant]
WO WO2017002774 · 2017 [cited by applicant]
WO WO2017061406 · 2017 [cited by applicant]
WO WO2018025629 · 2018 [cited by applicant]
WO WO2018092742 · 2018 [cited by applicant]
WO WO2018105505 · 2018 [cited by applicant]
WO WO2018139231 · 2018 [cited by applicant]
WO WO2019013233 · 2019 [cited by applicant]
WO WO2019221227 · 2019 [cited by applicant]
WO WO2019221231A1 · 2019 [cited by examiner]
WO WO2020129846 · 2020 [cited by applicant]
WO WO2021125201 · 2021 [cited by applicant]
International Search Report and Written Opinion issued in PCT/JP2021/013524, dated Jun. 15, 2021, with English translation, 15 pages. [cited by applicant]
International Preliminary Report on Patentability issued in PCT/JP2021/013524, dated Oct. 13, 2022, 7 pages. [cited by applicant]
International Search Report and Written Opinion issued in PCT/JP2021/016916, dated Jul. 13, 2021, with English translation, 13 pages. [cited by applicant]
International Preliminary Report on Patentability issued in PCT/JP2021/016916, dated Nov. 24, 2022, 6 pages. [cited by applicant]
European Search Report issued in related application No. 21779618.4, dated Mar. 18, 2024, 8 pages. [cited by applicant]
European Search Report issued in related application No. 21804030.1, dated Apr. 25, 2024, 8 pages. [cited by applicant]
Korean Official Action issued in related Korean Application 10-2022-7033234, dated Apr. 20, 2024 with translation, 12 pages. [cited by applicant]
Official Action issued in related U.S. Appl. No. 17/913,153, dated Jun. 20, 2024, 8 pages. [cited by applicant]
Official Action issued in related U.S. Appl. No. 17/923,565, dated Jun. 14, 2024, 5 pages. [cited by applicant]