{
  "$type": "site.standard.document",
  "description": "A metal gasket (1, 1A, 1B) for sealing between a cylinder head and a cylinder block of an engine includes a main bead (11) provided around a cylinder bore and a secondary bead (12) provided outside the main bead. The secondary bead (12) includes a protruding portion (12a) protruding toward the head…",
  "path": "/patents/1070578",
  "publishedAt": "2006-01-25T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "F02F11/00",
    "ISHIKAWA GASKET [JP]"
  ],
  "textContent": "A metal gasket (1, 1A, 1B) for sealing between a cylinder head and a cylinder block of an engine includes a main bead (11) provided around a cylinder bore and a secondary bead (12) provided outside the main bead. The secondary bead (12) includes a protruding portion (12a) protruding toward the head bolt hole within a range of 30 degrees on both sides of a straight line connecting the center of the cylinder bore and a center of a head bolt hole surrounding the cylinder bore.",
  "title": "Metal gasket"
}