GB901238A - Spark plugs and their manufacture - Google Patents

Spark plugs and their manufacture

Info

Publication number
GB901238A
GB901238A GB16987/61A GB1698761A GB901238A GB 901238 A GB901238 A GB 901238A GB 16987/61 A GB16987/61 A GB 16987/61A GB 1698761 A GB1698761 A GB 1698761A GB 901238 A GB901238 A GB 901238A
Authority
GB
United Kingdom
Prior art keywords
insulator
minutes
hours
elevated temperature
firing
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
GB16987/61A
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.)
Motors Liquidation Co
Original Assignee
Motors Liquidation 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 Motors Liquidation Co filed Critical Motors Liquidation Co
Publication of GB901238A publication Critical patent/GB901238A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
    • C04B41/51—Metallising, e.g. infiltration of sintered ceramic preforms with molten metal
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
    • C04B41/51—Metallising, e.g. infiltration of sintered ceramic preforms with molten metal
    • C04B41/5127—Cu, e.g. Cu-CuO eutectic
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
    • C04B41/81—Coating or impregnation
    • C04B41/85—Coating or impregnation with inorganic materials
    • C04B41/88—Metals
    • 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
    • H01T13/38—Selection of materials for insulation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Spark Plugs (AREA)

Abstract

901,238. Sparking plugs. GENERAL MOTORS CORPORATION. May 10, 1961 [May 16, 1960], No. 16987/61. Class 7(4) A method of making a spark plug ceramic insulator having a semi-conductive surface 21 comprises applying to the surface of the insulator a composition consisting essentially in parts by weight of about 10% to 40% copper and 90% to 60% chromic oxide firing the treated insulator in a non-reducing atmosphere to a temperature of about 2400‹F. to 2500‹F. and maintaining the insulator at the elevated temperature for at least 15 minutes. The insulator may be fired in an oxidising atmosphere and the firing may be carried out for 5 to 12 hours and the elevated temperature may be maintained for between 15 minutes and 3 hours. The insulator surface may be etched with an etching agent before application. The composition may be applied on at least two separate coatings, the coatings being fired separately under substantially the same conditions.
GB16987/61A 1960-05-16 1961-05-10 Spark plugs and their manufacture Expired GB901238A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US29472A US3108905A (en) 1960-05-16 1960-05-16 Method of making a semiconductive ceramic body and a low voltage sparking device emboying same

Publications (1)

Publication Number Publication Date
GB901238A true GB901238A (en) 1962-07-18

Family

ID=21849183

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16987/61A Expired GB901238A (en) 1960-05-16 1961-05-10 Spark plugs and their manufacture

Country Status (2)

Country Link
US (1) US3108905A (en)
GB (1) GB901238A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5187404A (en) * 1991-08-05 1993-02-16 Cooper Industries, Inc. Surface gap igniter
US6133146A (en) * 1996-05-09 2000-10-17 Scb Technologies, Inc. Semiconductor bridge device and method of making the same
US6677698B2 (en) * 2000-12-15 2004-01-13 Delphi Technologies, Inc. Spark plug copper core alloy

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2578754A (en) * 1951-12-18 Sparking plug
US2684665A (en) * 1949-06-09 1954-07-27 Bendix Aviat Corp Electrical apparatus
US2953704A (en) * 1956-07-26 1960-09-20 Bendix Corp Electrical discharge device
US2861014A (en) * 1956-08-14 1958-11-18 Gen Lab Associates Inc Process of making a semi-conductive ceramic body

Also Published As

Publication number Publication date
US3108905A (en) 1963-10-29

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