Invention Grant
- Patent Title: Ignition plug including a mark formed of an oxide film and method for manufacturing thereof
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Application No.: US15974851Application Date: 2018-05-09
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Publication No.: US10468859B2Publication Date: 2019-11-05
- Inventor: Shunsuke Maki
- Applicant: NGK SPARK PLUG CO., LTD.
- Applicant Address: JP Nagoya-shi
- Assignee: NGK SPARK PLUG CO., LTD.
- Current Assignee: NGK SPARK PLUG CO., LTD.
- Current Assignee Address: JP Nagoya-shi
- Agency: Kusner & Jaffe
- Priority: JP2017-094516 20170511
- Main IPC: H01T21/02
- IPC: H01T21/02 ; G06K1/12 ; B23K26/00 ; B23K26/08 ; B23K26/40 ; H01T13/02 ; H01T13/04 ; H01T13/32 ; H01T13/58 ; B23K26/364 ; B23K26/352 ; B23K26/359 ; G06K19/06 ; B41M5/24 ; B41M5/26 ; C21D10/00 ; G09F7/16 ; H01T13/20 ; B23K101/34 ; B23K101/36 ; B23K103/04 ; B23K103/00
Abstract:
An ignition plug such as a spark plug or a glow plug configured to ignite an air-fuel mixture in an internal combustion engine includes a mark that is formed of an oxide film generated on the surface of a metal member or is formed of the metal member and the oxide film. The mark is formed by promoting formation of the oxide film on the surface of the metal member or removing the oxide film through radiation of a laser beam onto the surface of the metal member.
Public/Granted literature
- US20180331511A1 IGNITION PLUG AND METHOD FOR MANUFACTURING IGNITION PLUG Public/Granted day:2018-11-15
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