{
  "$type": "site.standard.document",
  "description": "The present invention provides a tire having improved durability of a bead portion. Specifically, the present invention provides a tire having: at least one layer of carcass, including a carcass main body extending in a toroidal shape across a pair of bead cores and a carcass turn-up portion…",
  "path": "/patents/1010961",
  "publishedAt": "2011-07-20T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B29D30/38",
    "BRIDGESTONE CORP [JP]"
  ],
  "textContent": "The present invention provides a tire having improved durability of a bead portion. Specifically, the present invention provides a tire having: at least one layer of carcass, including a carcass main body extending in a toroidal shape across a pair of bead cores and a carcass turn-up portion continuous with the carcass main body and wound around each bead core from the inner side toward the outer side in the tire widthwise direction and; at least two layers of textile chafer disposed on the tire-radial direction inner surface of the carcass with respect to the bead core; and at least one layer of wire chafer, characterized in that : in a state where the tire is assembled with a \"design rim\" prescribed in TRA and inflated at an inner pressure of 50 kPa and, providing that the center of a flange curvature of the rim is P and the outer most end in the tire radial direction of a portion covering the carcass main body, of the textile chafer, is A, an angle ¸ formed by a line passing P and in parallel with the tire rotation axis, with respect to a line linking P and A, is in a range of 20° ¤ ¸ ¤ 60°.",
  "title": "TIRE"
}