Spark plug

Details Spark plug Spark plug

1997-06-27

1998-08-11

Patel, Nimeshkumar

Electric lamp and discharge devices

Spark plugs

Particular electrode structure or spacing

313142, H01T 1320, H01T 1339

Patent

active

057937931

ABSTRACT:
Spark plug has a central electrode, an insulator provided exterior to the central electrode, main metallic shell provided exterior to the insulator in such a way that the central electrode protrudes from one end, and a ground electrode coupled at one end to the main metallic shell and which has the other end disposed to face the central electrode 3, with a chip being secured to either the central electrode or the ground electrode or both to form spark discharge gap g. The chip is made of a metal based on Ir which contains Rh in an amount ranging from 3 to 50 wt % (50 wt % being not inclusive).

REFERENCES:
patent: 1850819 (1932-03-01), Waltenberg et al.
patent: 4324588 (1982-04-01), Zysk et al.
patent: 4893051 (1990-01-01), Kondo

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