SPARK PLUG AND INTERNAL COMBUSTION ENGINE PROVIDED THEREWITH
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United States of America Patent
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N/A
Issued Date -
Jul 9, 2015
app pub date -
Jul 1, 2013
filing date -
Jul 3, 2012
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A spark plug includes a housing portion; an insulator that is retained in the housing portion; a center electrode that is exposed from the insulator; and a ground electrode that forms a discharge gap between the ground electrode and the center electrode. A plug pocket is formed between the housing portion and the insulator. In the spark plug, a tapered portion is provided on an inside of one of two portions of a tip end portion of the housing portion that face each other in a radial direction of the housing portion, and the ground electrode is provided on the other portion.
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