Invention Grant
- Patent Title: Spark plug for internal combustion engine
- Patent Title (中): 内燃机火花塞
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Application No.: US12998301Application Date: 2009-11-20
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Publication No.: US08648519B2Publication Date: 2014-02-11
- Inventor: Kaori Kishimoto , Yasushi Sakakura
- Applicant: Kaori Kishimoto , Yasushi Sakakura
- 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: JP2008-297478 20081121
- International Application: PCT/JP2009/069695 WO 20091120
- International Announcement: WO2010/058835 WO 20100527
- Main IPC: H01T13/20
- IPC: H01T13/20
Abstract:
A spark plug is provided with a ground electrode, a noble metal tip made of a Pt alloy, and a relieving layer tip made of a Pt alloy which has a linear expansion coefficient between that of the ground electrode and that of the noble metal tip.
Public/Granted literature
- US20110198981A1 SPARK PLUG FOR INTERNAL COMBUSTION ENGINE Public/Granted day:2011-08-18
Information query
