Invention Grant
- Patent Title: Electrode tip for spark plug, and spark plug
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Application No.: US15315105Application Date: 2015-05-26
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Publication No.: US10186845B2Publication Date: 2019-01-22
- Inventor: Daisuke Sumoyama , Tatsuya Gozawa , Magoki Shimadate , Yusuke Kawashima
- Applicant: NGK SPARK PLUG CO., LTD.
- Applicant Address: JP Nagoya-shi, Aichi
- Assignee: NGK SPARK PLUG CO., LTD.
- Current Assignee: NGK SPARK PLUG CO., LTD.
- Current Assignee Address: JP Nagoya-shi, Aichi
- Agency: Kusner & Jaffe
- Priority: JP2014-114701 20140603
- International Application: PCT/JP2015/002663 WO 20150526
- International Announcement: WO2015/186315 WO 20151210
- Main IPC: H01T13/39
- IPC: H01T13/39 ; H01T13/32

Abstract:
An electrode tip for a spark plug, wherein Pt is contained as a main component, 7% by mass or more of Rh is contained, and a total content of Pt and Rh is greater than or equal to 95% by mass. The electrode tip includes: a narrow portion having the same cross-sectional shape in a direction of an axis; and a wide portion which is adjacent to the narrow portion and has a cross-sectional area, in a radial direction, which is greater than the narrow portion.
Public/Granted literature
- US20170187170A1 ELECTRODE TIP FOR SPARK PLUG, AND SPARK PLUG Public/Granted day:2017-06-29
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