Invention Grant
- Patent Title: Spark plug and manufacturing method thereof
- Patent Title (中): 火花塞及其制造方法
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Application No.: US13123408Application Date: 2009-10-09
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Publication No.: US08222803B2Publication Date: 2012-07-17
- Inventor: Kohei Katsuraya , Katsutoshi Nakayama
- Applicant: Kohei Katsuraya , Katsutoshi Nakayama
- 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: JP2008-267452 20081016
- International Application: PCT/JP2009/005285 WO 20091009
- International Announcement: WO2010/044238 WO 20100422
- Main IPC: H01T13/28
- IPC: H01T13/28 ; H01T13/20 ; H01T21/00 ; H01T21/02
Abstract:
There is provided a spark plug 100 with a ground electrode 30, wherein a protrusion amount A of a protruding portion 36 satisfies a relationship of 0.4 mm≦A≦1.0 mm and wherein a press recessed portion 37 extends to a front end surface 31 of the ground electrode 30.
Public/Granted literature
- US20110193470A1 SPARK PLUG AND MANUFACTURING METHOD THEREOF Public/Granted day:2011-08-11
Information query
