{
  "$type": "site.standard.document",
  "description": "A pneumatic tire comprises a tread rubber having a hardness less than 60 degrees. The tread portion comprises two shoulder circumferential grooves (10), two shoulder land portions (20), and one or more crown land portions (30) therebetween. The shoulder land portion is divided into shoulder blocks…",
  "path": "/patents/1406423",
  "publishedAt": "2024-08-07T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60C11/0008",
    "SUMITOMO RUBBER IND [JP]"
  ],
  "textContent": "A pneumatic tire comprises a tread rubber having a hardness less than 60 degrees. The tread portion comprises two shoulder circumferential grooves (10), two shoulder land portions (20), and one or more crown land portions (30) therebetween. The shoulder land portion is divided into shoulder blocks (22) by shoulder lateral-groove-like tread-pattern elements (21, 31) having a depth of not less than 50% of the shoulder circumferential groove depth. At least one of the crown land regions (30) is divided into crown blocks (32) by crown lateral-groove-like tread-pattern elements (31) having a depth of not less than 50% of the shoulder circumferential groove depth. When a value obtained by dividing a ground contact area of one block by a maximum depth of the lateral-groove-like tread-pattern elements which divide the block is defined as the block area per unit depth, the block area per unit depth of the shoulder block (22) is smaller than that of the crown block (32).",
  "title": "PNEUMATIC TIRE"
}