Anti-carbon fouling spark plug

Electric lamp and discharge devices – Spark plugs – Particular electrode structure or spacing

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Details

501 14, H01T 1320

Patent

active

061664812

ABSTRACT:
A spark plug (100) includes a ground electrode (125), a firing electrode (115), an insulator core (105) having an insulator core nose (120), and an outer shell (110) surrounding the insulator core (105). The improvement includes the insulator core nose (120) including a high temperature glaze applied to an outer surface of the insulator core nose (120) and the high temperature glaze composition. The composition includes, by weight:

REFERENCES:
patent: 4746578 (1988-05-01), Kondo et al.
patent: 4839313 (1989-06-01), Kondo et al.
patent: 5518968 (1996-05-01), Knapp
patent: 5677250 (1997-10-01), Knapp
patent: 5922444 (1999-07-01), Tsuzuki et al.
patent: 5985473 (1999-11-01), Knapp et al.

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