{
  "$type": "site.standard.document",
  "coverImage": {
    "$type": "blob",
    "ref": {
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    "mimeType": "image/png",
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  "description": "A tire includes a tread portion provided with a block . A block corner portion of the block has a stepped chamfered portion formed therein in which a block height decreases stepwise from a tread surface toward a top portion . The stepped chamfered portion includes upper surfaces parallel to the…",
  "path": "/patents/1329154",
  "publishedAt": "2022-10-13T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60C11/11",
    "Sumitomo Rubber Industries, Ltd."
  ],
  "textContent": "A tire includes a tread portion provided with a block . A block corner portion of the block has a stepped chamfered portion formed therein in which a block height decreases stepwise from a tread surface toward a top portion . The stepped chamfered portion includes upper surfaces parallel to the tread surface , and step corner portions each formed so as to protrude toward a block outer side as a result of the upper surface and a vertical surface or the vertical surface and the tread surface intersecting each other. An angle θ between the tread surface and a virtual straight line n connecting the step corner portions in a vertical cross-sectional view, of the block corner portion , passing through the top portion is 10 to 40 degrees.",
  "title": "TIRE"
}