JPS5439734A - Spark plug - Google Patents

Spark plug

Info

Publication number
JPS5439734A
JPS5439734A JP10697477A JP10697477A JPS5439734A JP S5439734 A JPS5439734 A JP S5439734A JP 10697477 A JP10697477 A JP 10697477A JP 10697477 A JP10697477 A JP 10697477A JP S5439734 A JPS5439734 A JP S5439734A
Authority
JP
Japan
Prior art keywords
spark plug
central electrode
heat
forging
durability
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP10697477A
Other languages
Japanese (ja)
Inventor
Ikurou Ogasawara
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Niterra Co Ltd
Original Assignee
NGK Spark Plug Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NGK Spark Plug Co Ltd filed Critical NGK Spark Plug Co Ltd
Priority to JP10697477A priority Critical patent/JPS5439734A/en
Publication of JPS5439734A publication Critical patent/JPS5439734A/en
Pending legal-status Critical Current

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  • Spark Plugs (AREA)

Abstract

PURPOSE: To improve the heat transfer through central electrode, the heat value, the heat resistance and the durability, by extending and forging a high thermal conductivity metal such as copper into the flange-shaped tip of the central electrode.
CONSTITUTION: In the making.
COPYRIGHT: (C)1979,JPO&Japio
JP10697477A 1977-09-05 1977-09-05 Spark plug Pending JPS5439734A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10697477A JPS5439734A (en) 1977-09-05 1977-09-05 Spark plug

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10697477A JPS5439734A (en) 1977-09-05 1977-09-05 Spark plug

Publications (1)

Publication Number Publication Date
JPS5439734A true JPS5439734A (en) 1979-03-27

Family

ID=14447256

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10697477A Pending JPS5439734A (en) 1977-09-05 1977-09-05 Spark plug

Country Status (1)

Country Link
JP (1) JPS5439734A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02204988A (en) * 1989-02-02 1990-08-14 Ngk Spark Plug Co Ltd Spark plug of internal combustion engine
FR2805093A1 (en) * 2000-02-16 2001-08-17 Sagem SPARK PLUG AND MANUFACTURING METHOD THEREOF

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02204988A (en) * 1989-02-02 1990-08-14 Ngk Spark Plug Co Ltd Spark plug of internal combustion engine
FR2805093A1 (en) * 2000-02-16 2001-08-17 Sagem SPARK PLUG AND MANUFACTURING METHOD THEREOF

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