{
  "$type": "site.standard.document",
  "description": "A heavy duty tire 2 includes a tread 4 having a plurality of circumferential grooves 24. The plurality of circumferential grooves 24 divide the tread 4 into a plurality of land portions 26. The plurality of land portions 26 include a plurality of main land portions 32. Each main land portion 32 has…",
  "path": "/patents/1389060",
  "publishedAt": "2026-05-20T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60C11/0306",
    "SUMITOMO RUBBER IND [JP]"
  ],
  "textContent": "A heavy duty tire 2 includes a tread 4 having a plurality of circumferential grooves 24. The plurality of circumferential grooves 24 divide the tread 4 into a plurality of land portions 26. The plurality of land portions 26 include a plurality of main land portions 32. Each main land portion 32 has a plurality of main lateral grooves 38. The plurality of main lateral grooves 38 divide the main land portion 32 into a plurality of main blocks 40. Each main lateral groove 38 includes a lateral groove body 54 and a bottom sipe portion 56. Each main block 40 has a transverse sipe 70. The transverse sipe 70 includes a sipe body 72 and a tubular portion 74. A circumferential groove 24 located between the adjacent main land portions 38 is a circumferential narrow groove 28 including a body portion 78 and an enlarged width portion 80.",
  "title": "HEAVY DUTY TIRE"
}