Spark plug

Details Spark plug Spark plug

1978-03-28

1980-07-08

Demeo, Palmer C.

Electric lamp and discharge devices

Spark plugs

Shaped electrode chamber, insulator end, shell skirt, baffle...

H01T 1320

Patent

active

042119529

ABSTRACT:
A spark plug for internal combustion engines has a labyrinth groove formed in the vicinity of the open end of a space defined by the outer surface of an insulator leg, the inner surface of a metal plug body and a packing so as to restrict entry of fresh air-fuel mixture therein.

REFERENCES:
patent: 1276396 (1918-08-01), Mummert
patent: 2353620 (1944-07-01), Weinerth

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