{
  "$type": "site.standard.document",
  "description": "A motorcycle tyre includes a tread rubber that includes a base rubber layer and a cap rubber layer disposed outward in the tyre radial direction of the base rubber layer to form a ground contact surface. The cap rubber layer includes a crown cap portion disposed in a middle region in the tyre axial…",
  "path": "/patents/1405509",
  "publishedAt": "2024-05-01T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60C11/005",
    "SUMITOMO RUBBER IND [JP]"
  ],
  "textContent": "A motorcycle tyre includes a tread rubber that includes a base rubber layer and a cap rubber layer disposed outward in the tyre radial direction of the base rubber layer to form a ground contact surface. The cap rubber layer includes a crown cap portion disposed in a middle region in the tyre axial direction of a tread portion and a pair of shoulder cap portions disposed in both sides in the tyre axial direction of the crown cap portion. The crown cap portion has a loss tangent tan δc, the shoulder cap portions have a loss tangent tan δs, and the base rubber layer has a loss tangent tan δb, wherein the loss tangents tan δc, tan δs and tan δb satisfy the following equation (1): tan δc < tan δs ≤ tan δb ···(1).",
  "title": "MOTORCYCLE TYRE"
}