Title:
オイルリング
Document Type and Number:
Japanese Patent JP6685642
Kind Code:
B2
Abstract:
An oil ring (1) includes an oil ring body (10) and a coil expander (20). The oil ring body (10) includes a pair of rail portions (12) each including an end portion of an outer periphery having a land (30) formed protruding radially outward from each rail portion (12). The land (30) includes an upper axial portion (31) and a lower axial portion (32) facing opposite to each other in an axial direction, a tapered portion (33) having one axial end contiguous to the upper axial portion (31) via a first curved portion (35), and a protruding portion (34) having one of axial ends contiguous to the tapered portion (33) and the other axial end contiguous to the lower axial portion (32) via a second curved portion (36). The protruding portion (34) is protruding in a direction perpendicular to the tapered portion (33).
Inventors:
Daisuke Nakamura
Kazuyuki Yamahata
Adachi Mitsuhiro
Kazuyuki Yamahata
Adachi Mitsuhiro
Application Number:
JP2014251015A
Publication Date:
April 22, 2020
Filing Date:
December 11, 2014
Export Citation:
Assignee:
Riken Co., Ltd.
International Classes:
F16J9/20; F02F5/00; F16J9/06
Domestic Patent References:
| JP8338530A | ||||
| JP201435038A | ||||
| JP2003520931A | ||||
| JP2010530045A |
Foreign References:
| US5901963 | ||||
| WO2011152114A1 |
Attorney, Agent or Firm:
Kenji Sugimura
Kenichiro Kataoka
Kenichiro Kataoka