GB1370761A - Spark plug - Google Patents

Spark plug

Info

Publication number
GB1370761A
GB1370761A GB230373A GB230373A GB1370761A GB 1370761 A GB1370761 A GB 1370761A GB 230373 A GB230373 A GB 230373A GB 230373 A GB230373 A GB 230373A GB 1370761 A GB1370761 A GB 1370761A
Authority
GB
United Kingdom
Prior art keywords
al2o3
sio2
li2o
na2o
cao
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
GB230373A
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.)
Federal Mogul Ignition LLC
Original Assignee
Champion Spark Plug Co
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 Champion Spark Plug Co filed Critical Champion Spark Plug Co
Publication of GB1370761A publication Critical patent/GB1370761A/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
    • H01T13/34—Sparking plugs characterised by features of the electrodes or insulation characterised by the mounting of electrodes in insulation, e.g. by embedding
    • 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

  • Spark Plugs (AREA)

Abstract

1370761 Glazing ceramics CHAMPION SPARK PLUG CO 16 Jan 1973 [8 Feb 1972] 2303/73 Heading C1M [Also in Division F1] The glaze on the ceramic insulator of a sparking plug, (see Division F1), is initially applied as a liquid glaze slip and then fired, and its composition lies within one of the following ranges expressed in overall total percentages by weight: Range 1 1-5 K2O, Na2O and/or Li2O; 2-7 CaO and/or MgO; 10-20 Al2O3; 70-80 SiO2. Range 2 1-5 K2O, Na2O and/or Li2O; 20-30 CaO and/or MgO; 40-50 Al2O3; 20-30 SiO2. Range 3 1-5 K2O, Na2O and/or Li2O; 2-7 CaO and/or MgO; 15-20 B2O3; 1-5 PbO; 5-15 Al2O3; 60-70 SiO2. Range 4 1-5 K2Na2O and/or Li2O; 30-40 Al2O3; 55-65 SiO2. The thickness of the glaze is greater than 0À0005 inch, and preferably between 0À001 and 0À0025 inch. In a specific example, a glaze slip having a composition of 1À29 K2O, 0À7 Na2O, 4À22 CaO, 0À03 MgO, 14À96 Al2O3, and 78À72 SiO2 was applied to a ceramic insulator and fired for ten minutes at 2700‹ F. It had a coefficient of thermal expansion of 2.87 x 10<-6> in./in./‹ C.
GB230373A 1972-02-08 1973-01-16 Spark plug Expired GB1370761A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US22445672A 1972-02-08 1972-02-08

Publications (1)

Publication Number Publication Date
GB1370761A true GB1370761A (en) 1974-10-16

Family

ID=22840770

Family Applications (1)

Application Number Title Priority Date Filing Date
GB230373A Expired GB1370761A (en) 1972-02-08 1973-01-16 Spark plug

Country Status (11)

Country Link
US (1) US3771204A (en)
BE (1) BE794668A (en)
CA (1) CA967838A (en)
DE (1) DE2263082A1 (en)
DK (1) DK142705B (en)
FR (1) FR2171105B1 (en)
GB (1) GB1370761A (en)
IT (1) IT974378B (en)
MY (1) MY7800157A (en)
NL (1) NL7301758A (en)
SE (1) SE390681B (en)

Families Citing this family (3)

* 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
FR2542513B1 (en) * 1983-03-08 1986-06-06 Exi Avtomobi SPARK PLUG
EP0171153A1 (en) * 1984-07-09 1986-02-12 General Motors Corporation Spark plug

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2516754A (en) * 1945-07-09 1950-07-25 Cipriani Chester Spark plug construction
US2615441A (en) * 1949-06-07 1952-10-28 Gen Motors Corp Spark plug electrode
US3452235A (en) * 1966-08-17 1969-06-24 Ford Motor Co Spark plug having a short tip center electrode

Also Published As

Publication number Publication date
FR2171105B1 (en) 1976-05-14
BE794668A (en) 1973-05-16
IT974378B (en) 1974-06-20
SE390681B (en) 1977-01-03
DK142705C (en) 1981-08-10
FR2171105A1 (en) 1973-09-21
DE2263082A1 (en) 1973-08-16
CA967838A (en) 1975-05-20
DK142705B (en) 1980-12-22
NL7301758A (en) 1973-08-10
US3771204A (en) 1973-11-13
MY7800157A (en) 1978-12-31

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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