发明名称 |
Spark plug and manufacturing process thereof |
摘要 |
A spark plug with a rivet-like tip center discharge electrode is obtained by melting powdery metal essentially consisting of noble metal Au, Ag and/or alloys thereof with Pd or the like charged in a small end bore formed at a discharge end bottom of a ceramic insulator then allowing to cool. Sealing and/or resistor incorporation together with setting (sealing) of a terminal rod may be done one-stepwise with the center electrode formation or two-stepwise after the center electrode formation. A resultant space in the center bore may be utilized for various purposes.
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申请公布号 |
US4414483(A) |
申请公布日期 |
1983.11.08 |
申请号 |
US19800185955 |
申请日期 |
1980.09.10 |
申请人 |
NGK SPARK PLUG CO., LTD. |
发明人 |
NISHIO, KANEMITSU;TAKAGI, SHUNICHI;SUZUKI, YASUHIKO |
分类号 |
H01T13/28;H01T13/14;H01T13/20;H01T13/39;H01T21/02;(IPC1-7):H01T13/20 |
主分类号 |
H01T13/28 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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