Title:
ピストンリングの組合せ、及び内燃機関
Document Type and Number:
Japanese Patent JP7307778
Kind Code:
B2
Abstract:
A piston ring combination for mounting to a piston in an internal combustion engine is provided which comprises four compression rings. An outer peripheral surface of a first compression ring includes a barrel face, an outer peripheral surface of a second compression ring includes an outer peripheral end portion and a tapered face, an outer peripheral surface of a third compression ring includes an outer peripheral end portion and a tapered face, and an outer peripheral surface of a fourth compression ring includes an outer peripheral end portion and a tapered face.
Inventors:
Akira Hikone
Kiyoyuki Kawai
Kiyoyuki Kawai
Application Number:
JP2021160908A
Publication Date:
July 12, 2023
Filing Date:
September 30, 2021
Export Citation:
Assignee:
TPR Co., Ltd.
International Classes:
F02F5/00; F16J9/00
Domestic Patent References:
| JP2015158247A | ||||
| JP6185620A | ||||
| JP56038138U | ||||
| JP2011214662A | ||||
| JP2015194222A |
Foreign References:
| US2798779 | ||||
| US2511458 |
Attorney, Agent or Firm:
Patent Attorney Corporation Shuwa Patent Office
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