Spark plug
AssigneeBeru AG
InventorsManfred Adolf, Werner Niessner
Life of this patent
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Abstract
Spark plug with an electrically insulating ceramic insulator (1), a metallic spark plug body (2), a ground electrode (3) and a middle electrode (4) which is located centrally in a hole (5) of the ceramic insulator (1), around the ignition-side end area on the periphery of the middle electrode (4) a peripheral tip (10) being formed which encompasses the middle electrode (4) in an annular manner.
Claims9
A spark plug with an electrically insulating ceramic insulator (1), a metallic spark plug body (2), a ground electrode (3) and a middle electrode (4) which is located centrally in a hole (5) of the ceramic insulator (1), wherein around an ignition-side end area and within the ignition-side end area of the insulator hole (5) on the periphery of the middle electrode (4), a peripheral burr-shaped tip (10) is formed from the material from the middle electrode (4) and which encompasses the middle electrode (4) in an annular manner.
Dependencies are inferred from the claim text.