Invention Grant
- Patent Title: Spark plug
- Patent Title (中): 火花塞
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Application No.: US13138779Application Date: 2010-03-25
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Publication No.: US08624473B2Publication Date: 2014-01-07
- Inventor: Katsutoshi Nakayama , Nobuaki Sakayanagi
- Applicant: Katsutoshi Nakayama , Nobuaki Sakayanagi
- Applicant Address: JP
- Assignee: NGK Spark Plug Co., Ltd.
- Current Assignee: NGK Spark Plug Co., Ltd.
- Current Assignee Address: JP
- Agency: Kusner & Jaffe
- Priority: JP2009-084687 20090331
- International Application: PCT/JP2010/002095 WO 20100325
- International Announcement: WO2010/113433 WO 20101007
- Main IPC: H01T13/20
- IPC: H01T13/20
Abstract:
A method for improving welding strength between a ground electrode and a noble metal tip on a spark plug. A fusion zone is formed along at least a portion of the boundary between the ground electrode and the noble metal tip through fusion of a portion of the ground electrode and a portion of the noble metal tip.
Public/Granted literature
- US20120019120A1 SPARK PLUG Public/Granted day:2012-01-26
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