Invention Grant
- Patent Title: Piston ring, reciprocating compressor, method for selecting piston ring and method for evaluating life of piston ring
-
Application No.: US16837538Application Date: 2020-04-01
-
Publication No.: US11441682B2Publication Date: 2022-09-13
- Inventor: Tomohiro Ootsuka , Naofumi Kanei
- Applicant: KOBE STEEL, LTD.
- Applicant Address: JP Hyogo
- Assignee: KOBE STEEL, LTD.
- Current Assignee: KOBE STEEL, LTD.
- Current Assignee Address: JP Hyogo
- Agency: Studebaker & Brackett PC
- Priority: JPJP2019-085660 20190426
- Main IPC: F16J9/28
- IPC: F16J9/28 ; F04B15/00 ; F16J9/26 ; F04B7/06
Abstract:
A piston ring is used for a reciprocating compressor. In the piston ring, polytetrafluoroethylene and polyetheretherketone or polyimide account for 50% or more by mass in total. The piston ring does not contain polyphenylene sulfide. The piston ring has a tensile strength within a range of more than 15 MPa and less than 100 MPa.
Public/Granted literature
Information query
