Spark plug

Details Spark plug Spark plug

1976-05-14

1977-05-10

Rolinec, Rudolph V.

Electric lamp and discharge devices

Spark plugs

Ring or disk electrode

313141, 313142, 313 115, H01T 1320

Patent

active

040230589

ABSTRACT:
An improved spark plug for use in internal combustion engines includes a center or first electrode positioned within a spark plug insulator member in a metal shell. An outer or second electrode extends from the metal shell and has a free end portion thereof spaced from a free end portion of the center electrode. An annular spark discharging surface is formed on said free end portion of the center electrode and an annular spark landing surface is formed on said free end portion of the outer electrode with the discharging and landing surfaces being in opposed or facing relation and cooperating to provide a spark in the form of a hollow column. A port is provided in the second electrode and is surrounded by the spark landing surface so that fuel on the opposite side of the outer electrode will be ignited.

REFERENCES:
patent: 1226399 (1917-05-01), Smith
patent: 1352775 (1920-09-01), Bell
patent: 1479643 (1924-01-01), Blomster
patent: 2944178 (1960-07-01), Schaub

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