GB1514195A - Spark plug electrode - Google Patents

Spark plug electrode

Info

Publication number
GB1514195A
GB1514195A GB21132/75A GB2113275A GB1514195A GB 1514195 A GB1514195 A GB 1514195A GB 21132/75 A GB21132/75 A GB 21132/75A GB 2113275 A GB2113275 A GB 2113275A GB 1514195 A GB1514195 A GB 1514195A
Authority
GB
United Kingdom
Prior art keywords
corrosion
filament
copper
matrix material
resistant
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
Application number
GB21132/75A
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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
Priority claimed from DE19742444509 external-priority patent/DE2444509A1/en
Priority claimed from DE19752516727 external-priority patent/DE2516727C3/en
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of GB1514195A publication Critical patent/GB1514195A/en
Expired 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
    • H01T13/00—Sparking plugs
    • H01T13/20—Sparking plugs characterised by features of the electrodes or insulation
    • H01T13/39—Selection of materials for electrodes

Abstract

1514195 Sparking plug electrodes ROBERT BOSCH GmbH 19 May 1975 [18 Sept 1974 16 April 1975] 21132/75 Heading FIB A sparking plug electrode 11 comprises at least one filament 19 made from corrosion-resistant material which is highly electrically conductive and a matrix material 18 in which the filament is embedded and which is surrounded by a sheath 17 made from a corrosion-resistant material the matrix material being copper or a corrosion-resistant low alloy copper having a high electrical and thermal conductivity. As described 5 to 50 per cent of the cross-section of the electrode may be copper. Preferably approximately 30 per cent of the crosssection of the electrode is of copper. As shown in Fig. 2, there are seven filaments but in a modification, (not shown), there is only one filament. It is stated that up to 200 filaments can be embedded in the matrix material suitable materials for the filaments are corrosion-resistant alloys based on nickel, chromium or cobalt and similar alloys may be used for the sheath enclosing the matrix material. The filament material and the sheath material may comprise at least 95 wt. per cent of nickel.
GB21132/75A 1974-09-18 1975-05-19 Spark plug electrode Expired GB1514195A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19742444509 DE2444509A1 (en) 1974-09-18 1974-09-18 Centre electrode of sparking plug for IC engine - consists of bundle of nickel alloy based fibres encased in nickel alloy sheath
DE19752516727 DE2516727C3 (en) 1975-04-16 1975-04-16 Spark plug electrode

Publications (1)

Publication Number Publication Date
GB1514195A true GB1514195A (en) 1978-06-14

Family

ID=25767714

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21132/75A Expired GB1514195A (en) 1974-09-18 1975-05-19 Spark plug electrode

Country Status (11)

Country Link
JP (2) JPS5155832A (en)
AR (1) AR203975A1 (en)
BR (1) BR7505989A (en)
CA (1) CA1046369A (en)
DD (1) DD120570A5 (en)
ES (1) ES441028A1 (en)
FR (1) FR2285735A1 (en)
GB (1) GB1514195A (en)
IT (1) IT1042580B (en)
SE (1) SE401061B (en)
SU (1) SU673208A3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001005009A1 (en) * 1999-07-13 2001-01-18 Alliedsignal Inc. Spark plug including a wear-resistant electrode tip made from a co-extruded composite material, and method of making same

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2451648A1 (en) * 1979-03-13 1980-10-10 Texas Instruments Inc Spar plug middle electrode has corrosion and erosion resistant core - with sheath of higher thermal conductivity

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR570141A (en) * 1923-08-25 1924-04-24 Improvements to spark plugs for internal combustion engines
US2261436A (en) * 1940-05-24 1941-11-04 Edmund R Week Jr Spark plug and method of making the same
GB588197A (en) * 1944-02-01 1947-05-16 Mallory Metallurg Prod Ltd Improvements in and relating to sparking plugs
US2470033A (en) * 1945-11-27 1949-05-10 Mallory & Co Inc P R Spark plug
US2942135A (en) * 1958-01-31 1960-06-21 Eli Ladenheim Spark plug
JPS56920B2 (en) * 1972-04-04 1981-01-10

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001005009A1 (en) * 1999-07-13 2001-01-18 Alliedsignal Inc. Spark plug including a wear-resistant electrode tip made from a co-extruded composite material, and method of making same
US6533629B1 (en) 1999-07-13 2003-03-18 Alliedsignal Inc. Spark plug including a wear-resistant electrode tip made from a co-extruded composite material, and method of making same

Also Published As

Publication number Publication date
SE401061B (en) 1978-04-17
BR7505989A (en) 1976-08-03
AR203975A1 (en) 1975-10-31
SU673208A3 (en) 1979-07-05
CA1046369A (en) 1979-01-16
SE7510391L (en) 1976-03-19
FR2285735A1 (en) 1976-04-16
DD120570A5 (en) 1976-06-12
IT1042580B (en) 1980-01-30
ES441028A1 (en) 1977-07-01
FR2285735B1 (en) 1979-05-18
JPS5984785U (en) 1984-06-08
AU8320975A (en) 1977-01-20
JPS5155832A (en) 1976-05-17

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee