JPH0375994B2 - - Google Patents

Info

Publication number
JPH0375994B2
JPH0375994B2 JP56015430A JP1543081A JPH0375994B2 JP H0375994 B2 JPH0375994 B2 JP H0375994B2 JP 56015430 A JP56015430 A JP 56015430A JP 1543081 A JP1543081 A JP 1543081A JP H0375994 B2 JPH0375994 B2 JP H0375994B2
Authority
JP
Japan
Prior art keywords
electrode
noble metal
metal plate
center electrode
diameter portion
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.)
Expired - Lifetime
Application number
JP56015430A
Other languages
English (en)
Japanese (ja)
Other versions
JPS57130385A (en
Inventor
Ryoji Kondo
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.)
Denso Corp
Original Assignee
NipponDenso 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 NipponDenso Co Ltd filed Critical NipponDenso Co Ltd
Priority to JP1543081A priority Critical patent/JPS57130385A/ja
Publication of JPS57130385A publication Critical patent/JPS57130385A/ja
Publication of JPH0375994B2 publication Critical patent/JPH0375994B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Spark Plugs (AREA)
JP1543081A 1981-02-04 1981-02-04 Spark plug for internal combustion engine Granted JPS57130385A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1543081A JPS57130385A (en) 1981-02-04 1981-02-04 Spark plug for internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1543081A JPS57130385A (en) 1981-02-04 1981-02-04 Spark plug for internal combustion engine

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP4258101A Division JP2513173B2 (ja) 1992-09-28 1992-09-28 内燃機関用スパ―クプラグの製造方法

Publications (2)

Publication Number Publication Date
JPS57130385A JPS57130385A (en) 1982-08-12
JPH0375994B2 true JPH0375994B2 (en]) 1991-12-04

Family

ID=11888561

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1543081A Granted JPS57130385A (en) 1981-02-04 1981-02-04 Spark plug for internal combustion engine

Country Status (1)

Country Link
JP (1) JPS57130385A (en])

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3301094B2 (ja) * 1991-12-13 2002-07-15 株式会社デンソー 内燃機関用スパークプラグおよびその製造方法
JP2513173B2 (ja) * 1992-09-28 1996-07-03 日本電装株式会社 内燃機関用スパ―クプラグの製造方法
JP3196601B2 (ja) * 1995-10-11 2001-08-06 株式会社デンソー 内燃機関用スパークプラグの製造方法
US9130356B2 (en) 2012-06-01 2015-09-08 Federal-Mogul Ignition Company Spark plug having a thin noble metal firing pad
US9673593B2 (en) 2012-08-09 2017-06-06 Federal-Mogul Ignition Company Spark plug having firing pad
US9318879B2 (en) 2012-10-19 2016-04-19 Federal-Mogul Ignition Company Spark plug having firing pad
JP7028810B2 (ja) * 2019-01-25 2022-03-02 日本特殊陶業株式会社 スパークプラグ
JP7121081B2 (ja) * 2020-08-19 2022-08-17 日本特殊陶業株式会社 スパークプラグ

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2296033A (en) * 1941-01-18 1942-09-15 Gen Motors Corp Spark plug
JPS522378A (en) * 1975-06-24 1977-01-10 Seiko Instr & Electronics Ltd Semiconductor device manufacturing method

Also Published As

Publication number Publication date
JPS57130385A (en) 1982-08-12

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