JPS5247149A - Spark plug - Google Patents

Spark plug

Info

Publication number
JPS5247149A
JPS5247149A JP12271875A JP12271875A JPS5247149A JP S5247149 A JPS5247149 A JP S5247149A JP 12271875 A JP12271875 A JP 12271875A JP 12271875 A JP12271875 A JP 12271875A JP S5247149 A JPS5247149 A JP S5247149A
Authority
JP
Japan
Prior art keywords
circumferential face
spark plug
outer circumferential
centrical
former
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
JP12271875A
Other languages
Japanese (ja)
Inventor
Tatsuo Nogami
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.)
HITACHI KAZOU KK
Original Assignee
HITACHI KAZOU KK
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 HITACHI KAZOU KK filed Critical HITACHI KAZOU KK
Priority to JP12271875A priority Critical patent/JPS5247149A/en
Publication of JPS5247149A publication Critical patent/JPS5247149A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: The outer circumferential face of the top end of a central electrode is formed as a discharge portion, earth electrode is positioned in a predetermined distance from the outer circumferential face and has the inner circumferential face con-centrical with the former to generate an electric spark effective over a long time.
COPYRIGHT: (C)1977,JPO&Japio
JP12271875A 1975-10-11 1975-10-11 Spark plug Pending JPS5247149A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12271875A JPS5247149A (en) 1975-10-11 1975-10-11 Spark plug

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12271875A JPS5247149A (en) 1975-10-11 1975-10-11 Spark plug

Publications (1)

Publication Number Publication Date
JPS5247149A true JPS5247149A (en) 1977-04-14

Family

ID=14842863

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12271875A Pending JPS5247149A (en) 1975-10-11 1975-10-11 Spark plug

Country Status (1)

Country Link
JP (1) JPS5247149A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5525517A (en) * 1978-08-11 1980-02-23 Nissan Motor Co Ltd Ignition device for internal combustion engine
JPS55154434U (en) * 1979-04-20 1980-11-07

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5525517A (en) * 1978-08-11 1980-02-23 Nissan Motor Co Ltd Ignition device for internal combustion engine
JPS55154434U (en) * 1979-04-20 1980-11-07

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