{
  "$type": "site.standard.document",
  "description": "In a pneumatic tire, a tread portion including rows of land portions defined by circumferential grooves extending in a tire circumferential direction is formed by sectors divided in the tire circumferential direction, sipes extending in a tire width direction formed in the land portions include a…",
  "path": "/patents/1306714",
  "publishedAt": "2021-12-23T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60C11/1218",
    "The Yokohama Rubber Co., LTD."
  ],
  "textContent": "In a pneumatic tire, a tread portion including rows of land portions defined by circumferential grooves extending in a tire circumferential direction is formed by sectors divided in the tire circumferential direction, sipes extending in a tire width direction formed in the land portions include a three-dimensional sipe, whose shape tread surface changes along a sipe depth direction, and a two-dimensional sipe, whose shape is constant along the sipe depth direction, and a ratio R of a number of the three-dimensional sipes with respect to a total number of the sipes in a first boundary region, which is within 15 mm on one side of a sector dividing position in the tire circumferential direction, and a ratio Rt of a number of the three-dimensional sipes with respect to a total number of the sipes in all of the tread portion satisfy relationship R",
  "title": "PNEUMATIC TIRE"
}