Ignition plug

Details Ignition plug Ignition plug

1982-09-29

1984-12-11

Demeo, Palmer

Electric lamp and discharge devices

Spark plugs

Particular electrode structure or spacing

313142, H01T 1320

Patent

active

044880812

ABSTRACT:
An ignition plug of extended durability which reduces crack formation in noble metal layer on the center electrode and the ground electrode by joining a noblemental layer consisting of 85 to 70% by weight of Pt and 15 to 30% by weight of Ir to the spark discharge portion of the center electrode and also another noble metal layer consisting of 90 to 70% by weight of Pt and 10 to 30% by weight of Ni to the spark discharge portion of the ground electrode.

REFERENCES:
patent: 1160911 (1915-11-01), Latch
patent: 2296033 (1942-09-01), Heller
patent: 2391456 (1945-12-01), Hensel
patent: 2642053 (1953-06-01), Dowson
patent: 2955222 (1960-10-01), Beesch
patent: 3868530 (1975-02-01), Eaton et al.

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