Invention Grant
- Patent Title: Spark plug
- Patent Title (中): 火花塞
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Application No.: US14232639Application Date: 2012-04-17
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Publication No.: US08810120B2Publication Date: 2014-08-19
- Inventor: Daisuke Sumoyama , Osamu Yoshimoto
- Applicant: Daisuke Sumoyama , Osamu Yoshimoto
- 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: JP2011-166387 20110729
- International Application: PCT/JP2012/002637 WO 20120417
- International Announcement: WO2013/018252 WO 20130207
- Main IPC: H01T13/20
- IPC: H01T13/20

Abstract:
A spark plug having a center electrode; a ground electrode provided so as to form a gap between the ground electrode and the center electrode; and a tip provided on at least one of a distal end portion of the ground electrode and a front end portion of the center electrode, the end portions facing each other, characterized in that the tip contains an element group M (M consists of at least one species of Pt and Rh) in an amount of 3 mass % to 35 mass %, and an element group L (L consists of at least one species of Ir, Ru, and Pd) in an amount of 0 mass % to 15 mass %; the total amount of the element group M and the element group L is at most 35 mass %; and the total amount of Ni, the element group M, and the element group L is at least 94 mass %.
Public/Granted literature
- US20140159564A1 SPARK PLUG Public/Granted day:2014-06-12
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