Invention Grant
- Patent Title: Wire for piston ring, and manufacturing method of piston ring
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Application No.: US17608176Application Date: 2020-12-17
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Publication No.: US11603929B2Publication Date: 2023-03-14
- Inventor: Atsushi Nakazawa , Satoshi Minemura , Masahide Hama
- Applicant: TPR Co., Ltd.
- Applicant Address: JP Tokyo
- Assignee: TPR Co., Ltd.
- Current Assignee: TPR Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Marshall, Gerstein & Borun LLP
- Priority: JPJP2020-080314 20200430
- International Application: PCT/JP2020/047139 WO 20201217
- International Announcement: WO2021/220549 WO 20211104
- Main IPC: F16J9/20
- IPC: F16J9/20 ; B23P15/06
Abstract:
In a surface of a wire, a first side surface forming an outer circumferential surface in a piston ring includes a tapered surface and a protruding surface, the protruding surface is divided into a first part and a second part by a first virtual surface extending from the tapered surface, and the first part includes a top and is formed in a protruding shape.
Public/Granted literature
- US20220145990A1 WIRE FOR PISTON RING, AND MANUFACTURING METHOD OF PISTON RING Public/Granted day:2022-05-12
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