Invention Grant
- Patent Title: Spark plug
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Application No.: US15028786Application Date: 2015-04-07
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Publication No.: US09887518B2Publication Date: 2018-02-06
- Inventor: Magoki Shimadate
- 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: Sughrue Mion, PLLC
- Priority: JP2014-101002 20140515
- International Application: PCT/JP2015/001961 WO 20150407
- International Announcement: WO2015/174008 WO 20151119
- Main IPC: H01T13/32
- IPC: H01T13/32 ; H01T13/39

Abstract:
In a spark plug, at a cross section of a ground electrode which is orthogonal to a longitudinal direction of an electrode base material and passes an axis of an electrode tip, a surface of the base material is exposed, and the following conditions are satisfied: 1.2E≦F≦1.9E; 0.05 mm≦Da≦0.30 mm; 0.05 mm≦Db≦0.30 mm; and 0.20 mm≦J≦0.70 mm2.
Public/Granted literature
- US20160268780A1 SPARK PLUG Public/Granted day:2016-09-15
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