Title:
オイルコントロールリング
Document Type and Number:
Japanese Patent JP6675157
Kind Code:
B2
Abstract:
To provide an oil ring for diesel engines having excellent independency and followability of a pair of rail portions, as well as an excellent function of sealing the side surfaces of a ring groove, a pair of upper and lower, independent, annular rings each having a gap are axially combined in a oil control ring; each of the upper and lower rings has rail portions in sliding contact with an inner wall of a cylinder, and receives an annular coil expander for pushing the rail portion to the inner wall of the cylinder; and pluralities of oil-flowing grooves are formed on at least one of the lower side surface of the upper ring and the upper side surface of the lower ring.
Inventors:
Kawanishi Minoru
Kakegawa Satoshi
Kakegawa Satoshi
Application Number:
JP2015114824A
Publication Date:
April 01, 2020
Filing Date:
June 05, 2015
Export Citation:
Assignee:
Riken Co., Ltd.
International Classes:
F16J9/16; F02F5/00; F16J9/06; F16J9/20; F16J9/24
Domestic Patent References:
| JP2009024574A | ||||
| JP61087949A | ||||
| JP8200499A | ||||
| JP56127850U | ||||
| JP60065959A | ||||
| JP2013513769A |
Foreign References:
| US7429047 |
Attorney, Agent or Firm:
Takaishi Tachibana