Title:
圧力リング
Document Type and Number:
Japanese Patent JP6642509
Kind Code:
B2
Abstract:
A piston includes a first pressure ring (10) fitted in a first ring groove of the piston; and a second pressure ring (12) fitted in a second ring groove of the piston, and positioned between the first pressure ring (10) and an oil ring. The second pressure ring (12) is provided with a groove (20) that extends across a surface of the second pressure ring (12) from an inner peripheral side to an outer peripheral side. The groove is configured such that at least one of a width and a depth of the groove becomes larger toward the outer peripheral side from the inner peripheral side.
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| JPS60220267 | MANUFACTURING METHOD OF SEALING MEMBER |
Inventors:
Hisashi Oki
Takashi Koyama
Hiroshi Yaguchi
Yusuke Morita
Takashi Suzuki
Takashi Koyama
Hiroshi Yaguchi
Yusuke Morita
Takashi Suzuki
Application Number:
JP2017080775A
Publication Date:
February 05, 2020
Filing Date:
April 14, 2017
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
F16J9/20; F02F5/00
Domestic Patent References:
| JP2014101893A | ||||
| JP60047856U | ||||
| JP60122555U |
Attorney, Agent or Firm:
Hideki Takahashi
Mamoru Takada
Hidekazu Onishi
Mamoru Takada
Hidekazu Onishi