{
  "$type": "site.standard.document",
  "description": "A technique of reducing the occurrence of multiple discharge in a spark plug is provided. The spark plug has a main ground electrode and three auxiliary ground electrodes. The position at which the first auxiliary ground electrode is joined to a metallic shell is located opposite the position at…",
  "path": "/patents/977920",
  "publishedAt": "2014-03-05T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "H01T13/20",
    "NGK SPARK PLUG CO [JP]"
  ],
  "textContent": "A technique of reducing the occurrence of multiple discharge in a spark plug is provided. The spark plug has a main ground electrode and three auxiliary ground electrodes. The position at which the first auxiliary ground electrode is joined to a metallic shell is located opposite the position at which the main ground electrode is joined to the metallic shell, with respect to a center electrode. The positions at which the second and third auxiliary ground electrodes are joined to the metallic shell are located opposite to each other with respect to the center electrode. When the width of the first auxiliary ground electrode is represented by W, the shortest distance between the second auxiliary ground electrode and the third auxiliary ground electrode is represented by T, and a distance which is a component of the shortest distance T in a direction orthogonal to the first auxiliary ground electrode is represented by Tp, a relation W ‰¥ tp is satisfied.",
  "title": "SPARK PLUG AND PRODUCTION METHOD THEREFOR"
}