GB976798A - - Google Patents

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Publication number
GB976798A
GB976798A GB976798DA GB976798A GB 976798 A GB976798 A GB 976798A GB 976798D A GB976798D A GB 976798DA GB 976798 A GB976798 A GB 976798A
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United Kingdom
Prior art keywords
electrode
high grade
grade metal
aug
welding
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English (en)
Publication of GB976798A publication Critical patent/GB976798A/en
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  • Spark Plugs (AREA)
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ID=1754549

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59191281A (ja) * 1983-04-14 1984-10-30 株式会社デンソー 内燃機関用スパークプラグの中心電極に貴金属系細化電極を接合する方法
US4803395A (en) * 1986-09-08 1989-02-07 Eyquem Process for the manufacture of a platinum-tipped bimetallic central electrode for an ignition plug and the electrode produced according to this process
US5440198A (en) * 1992-06-17 1995-08-08 Ngk Spark Plug Co., Ltd. Spark plug having a noble metal firing tip bonded to a front end of a center electrode

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59191281A (ja) * 1983-04-14 1984-10-30 株式会社デンソー 内燃機関用スパークプラグの中心電極に貴金属系細化電極を接合する方法
US4803395A (en) * 1986-09-08 1989-02-07 Eyquem Process for the manufacture of a platinum-tipped bimetallic central electrode for an ignition plug and the electrode produced according to this process
US5440198A (en) * 1992-06-17 1995-08-08 Ngk Spark Plug Co., Ltd. Spark plug having a noble metal firing tip bonded to a front end of a center electrode

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