Invention Grant
- Patent Title: Spark plug having an electrode structure that effectively suppresses flashover
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Application No.: US15109712Application Date: 2015-01-13
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Publication No.: US09660423B2Publication Date: 2017-05-23
- Inventor: Keiji Ozeki
- Applicant: NGK SPARK PLUG CO., LTD.
- Applicant Address: JP Aichi
- Assignee: NGK SPARK PLUG CO., LTD.
- Current Assignee: NGK SPARK PLUG CO., LTD.
- Current Assignee Address: JP Aichi
- Agency: Kusner & Jaffe
- Priority: JP2014-011376 20140124
- International Application: PCT/JP2015/000098 WO 20150113
- International Announcement: WO2015/111381 WO 20150730
- Main IPC: H01T13/20
- IPC: H01T13/20 ; H01T13/04 ; H01T13/34
Abstract:
It is an object to reduce eccentricity between a terminal nut and an insulator. A spark plug includes an insulator, a terminal nut, and a metallic shell. The outside diameter of the insulator at a rear end of the metallic shell is smaller than or equal to 8 mm, and the contact area between a flat portion of the insulator and a contact surface of the terminal nut is smaller than 10 mm2.
Public/Granted literature
- US20160329688A1 SPARK PLUG Public/Granted day:2016-11-10
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