Invention Grant
- Patent Title: Method for manufacturing ignition plug
- Patent Title (中): 火花塞的制造方法
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Application No.: US13433482Application Date: 2012-03-29
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Publication No.: US08388395B2Publication Date: 2013-03-05
- Inventor: Toru Nakamura , Tomoaki Kato , Yuichi Yamada
- Applicant: Toru Nakamura , Tomoaki Kato , Yuichi Yamada
- 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: JPP2008-058251 20080307
- Main IPC: H01J9/00
- IPC: H01J9/00

Abstract:
A method for manufacturing an ignition plug is provided. The method includes: preparing an insulator having a cavity provided at a leading end portion thereof by disposing a leading end of a center electrode more inwards in an axial hole than a leading end of the insulator; building the insulator in an interior of a metal shell; disposing a ground electrode at a leading end portion of the metal shell; positioning a center of a through hole of the ground electrode and a center of the cavity of the insulator; and welding the ground electrode and the metal shell together after the positioning step.
Public/Granted literature
- US20120184171A1 METHOD FOR MANUFACTURING IGNITION PLUG Public/Granted day:2012-07-19
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