EP0975075A3 - A method for producing a spark plug - Google Patents

A method for producing a spark plug Download PDF

Info

Publication number
EP0975075A3
EP0975075A3 EP99122560A EP99122560A EP0975075A3 EP 0975075 A3 EP0975075 A3 EP 0975075A3 EP 99122560 A EP99122560 A EP 99122560A EP 99122560 A EP99122560 A EP 99122560A EP 0975075 A3 EP0975075 A3 EP 0975075A3
Authority
EP
European Patent Office
Prior art keywords
central electrode
chip
producing
spark plug
electrode
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.)
Withdrawn
Application number
EP99122560A
Other languages
German (de)
French (fr)
Other versions
EP0975075A2 (en
Inventor
Watarui c/o NGK Spark Plug Co. Ltd. Matsutani
Junichi C/O Ngk Spark Plug Co. Ltd. Kagawa
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26504866&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0975075(A3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by NGK Spark Plug Co Ltd filed Critical NGK Spark Plug Co Ltd
Publication of EP0975075A2 publication Critical patent/EP0975075A2/en
Publication of EP0975075A3 publication Critical patent/EP0975075A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T21/00—Apparatus or processes specially adapted for the manufacture or maintenance of spark gaps or sparking plugs
    • H01T21/02—Apparatus or processes specially adapted for the manufacture or maintenance of spark gaps or sparking plugs of sparking plugs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T13/00—Sparking plugs
    • H01T13/20—Sparking plugs characterised by features of the electrodes or insulation
    • H01T13/39—Selection of materials for electrodes

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Spark Plugs (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)

Abstract

A method for producing a spark plug comprising a central electrode, an insulator provided exterior to the central electrode, main metallic shell provided exterior to the insulator in such a way that the central electrode protrudes from one end, and a ground electrode coupled at one end to the metallic shell and which has the other end disposed to face the central electrode (3), with a chip being secured to either the central electrode or the ground electrode or both to form spark discharge gap (g). The chip is made by working an alloy including Ir based alloy, including Rh in an amount ranging from 3 wt.% to less than 50 wt.% to a chip of desired dimensions.
EP99122560A 1996-06-28 1997-06-27 A method for producing a spark plug Withdrawn EP0975075A3 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP18834796 1996-06-28
JP18834796 1996-06-28
JP33511996 1996-11-28
JP33511996A JP3461670B2 (en) 1996-06-28 1996-11-28 Spark plug and its manufacturing method
EP97110583A EP0817341B2 (en) 1996-06-28 1997-06-27 Spark plug

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP97110583A Division EP0817341B2 (en) 1996-06-28 1997-06-27 Spark plug

Publications (2)

Publication Number Publication Date
EP0975075A2 EP0975075A2 (en) 2000-01-26
EP0975075A3 true EP0975075A3 (en) 2000-02-02

Family

ID=26504866

Family Applications (2)

Application Number Title Priority Date Filing Date
EP99122560A Withdrawn EP0975075A3 (en) 1996-06-28 1997-06-27 A method for producing a spark plug
EP97110583A Expired - Lifetime EP0817341B2 (en) 1996-06-28 1997-06-27 Spark plug

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP97110583A Expired - Lifetime EP0817341B2 (en) 1996-06-28 1997-06-27 Spark plug

Country Status (6)

Country Link
US (1) USRE43758E1 (en)
EP (2) EP0975075A3 (en)
JP (1) JP3461670B2 (en)
KR (1) KR100355886B1 (en)
CN (1) CN1059293C (en)
DE (1) DE69703011T3 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002231412A (en) * 2001-01-31 2002-08-16 Ngk Spark Plug Co Ltd Method of manufacturing spark plug and manufacturing device
JP4121342B2 (en) * 2001-11-13 2008-07-23 日本特殊陶業株式会社 Metal part for plug with chromate coating and method for manufacturing the same
JP4607253B2 (en) * 2008-03-27 2011-01-05 日本特殊陶業株式会社 Spark plug and method of manufacturing spark plug
DE102010032412B4 (en) * 2010-07-27 2012-03-08 Dkt Verwaltungs-Gmbh Method for producing a starting electrode for a prechamber spark plug and prechamber spark plug
JP7057935B2 (en) * 2016-12-22 2022-04-21 石福金属興業株式会社 Heat resistant Ir alloy

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0243529A1 (en) * 1986-03-28 1987-11-04 NGK Spark Plug Co. Ltd. Spark plug
EP0418055A1 (en) * 1989-09-14 1991-03-20 Ngk Spark Plug Co., Ltd Spark plug
EP0587446A1 (en) * 1992-09-10 1994-03-16 Ngk Spark Plug Co., Ltd A method of making spark plug electrode
EP0637113A1 (en) * 1993-07-26 1995-02-01 Ngk Spark Plug Co., Ltd A spark plug
GB2302367A (en) * 1995-06-15 1997-01-15 Nippon Denso Co I.c. engine spark plug with noble metal chip of Ir-Rh alloy

Family Cites Families (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1850819A (en) 1931-03-06 1932-03-22 Wilson H A Co Alloy
GB479540A (en) † 1936-09-30 1938-02-08 Alan Richard Powell Improvements in electrodes for sparking plugs
US4324588A (en) 1979-08-17 1982-04-13 Engelhard Corporation Arc erosion resistant composite materials and processes for their manufacture
JPS57130384A (en) 1981-02-04 1982-08-12 Nippon Denso Co Spark plug for internal combustion engine
US4699600A (en) 1981-04-30 1987-10-13 Nippondenso Co., Ltd. Spark plug and method of manufacturing the same
EP0171994B1 (en) 1984-08-07 1988-06-22 NGK Spark Plug Co. Ltd. Spark plug
JPS6258114A (en) 1985-09-09 1987-03-13 Toshiba Corp Load survey system
DE3725228A1 (en) 1987-07-30 1989-02-09 Bayer Ag METHOD FOR OBTAINING PURE AROMATES
CN1009840B (en) * 1988-10-14 1990-10-03 中国有色金属工业总公司昆明贵金属研究所 Pt-base alloy for spark plug
JPH03110779A (en) 1989-09-25 1991-05-10 Ngk Spark Plug Co Ltd Built-in photo-sensor type spark plug
JPH04329286A (en) 1991-04-30 1992-11-18 Nippondenso Co Ltd Manufacture of spark plug
JP2902186B2 (en) 1991-12-04 1999-06-07 日本特殊陶業株式会社 Spark plug for gaseous fuel engine
JPH05335066A (en) 1992-06-01 1993-12-17 Nippondenso Co Ltd Spark plug for internal combustion engine
JP2853108B2 (en) 1992-06-17 1999-02-03 日本特殊陶業 株式会社 Spark plug
US5320569A (en) 1992-07-27 1994-06-14 Ngk Spark Plug Co., Ltd. Method of making a spark plug
US5465022A (en) * 1992-08-12 1995-11-07 Nippondenso Co., Ltd. Spark plug for internal-combustion engine and manufacture method of the same
JP3265067B2 (en) 1993-07-23 2002-03-11 日本特殊陶業株式会社 Spark plug
JPH0737673A (en) 1993-07-23 1995-02-07 Ngk Spark Plug Co Ltd Electrode for spark plug
JPH07268574A (en) 1994-03-25 1995-10-17 Tanaka Kikinzoku Kogyo Kk Production of iridium wire
JP3562533B2 (en) 1994-08-03 2004-09-08 株式会社デンソー Spark plug for internal combustion engine
GB9418705D0 (en) 1994-09-16 1994-11-16 Johnson Matthey Plc Improvements in high temperature articles
JP2877035B2 (en) 1995-06-15 1999-03-31 株式会社デンソー Spark plug for internal combustion engine
JPH09219274A (en) * 1995-12-06 1997-08-19 Denso Corp Spark plug
US5973443A (en) 1996-05-06 1999-10-26 Alliedsignal Inc. Spark plug electrode tip for internal combustion engine
JP3000955B2 (en) 1996-05-13 2000-01-17 株式会社デンソー Spark plug
GB2479540A (en) 2010-04-13 2011-10-19 Adam Ford Corrupting and erasing data on a storage device when computer casing is broken

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0243529A1 (en) * 1986-03-28 1987-11-04 NGK Spark Plug Co. Ltd. Spark plug
EP0418055A1 (en) * 1989-09-14 1991-03-20 Ngk Spark Plug Co., Ltd Spark plug
EP0587446A1 (en) * 1992-09-10 1994-03-16 Ngk Spark Plug Co., Ltd A method of making spark plug electrode
EP0637113A1 (en) * 1993-07-26 1995-02-01 Ngk Spark Plug Co., Ltd A spark plug
GB2302367A (en) * 1995-06-15 1997-01-15 Nippon Denso Co I.c. engine spark plug with noble metal chip of Ir-Rh alloy

Also Published As

Publication number Publication date
USRE43758E1 (en) 2012-10-23
JPH1074575A (en) 1998-03-17
EP0817341A1 (en) 1998-01-07
EP0975075A2 (en) 2000-01-26
EP0817341B1 (en) 2000-09-06
KR100355886B1 (en) 2002-12-26
JP3461670B2 (en) 2003-10-27
EP0817341B2 (en) 2003-12-10
DE69703011T3 (en) 2004-05-27
KR980006677A (en) 1998-03-30
DE69703011D1 (en) 2000-10-12
DE69703011T2 (en) 2001-01-11
CN1059293C (en) 2000-12-06
CN1170980A (en) 1998-01-21

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