{
  "$type": "site.standard.document",
  "description": "The present invention relates to a heavy duty tire including a tread portion 2 which includes a pair of crown circumferential grooves 3 and a crown region 4. The crown region 4 includes a plurality of crown land portions 5 demarcated by a circumferential sipe 8. At least one of the crown land…",
  "path": "/patents/1386833",
  "publishedAt": "2026-01-28T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60C11/033",
    "SUMITOMO RUBBER IND [JP]"
  ],
  "textContent": "The present invention relates to a heavy duty tire including a tread portion 2 which includes a pair of crown circumferential grooves 3 and a crown region 4. The crown region 4 includes a plurality of crown land portions 5 demarcated by a circumferential sipe 8. At least one of the crown land portions 5 is a first crown land portion 5A on which a plurality of lateral sipes 10 fully crossing a tread surface of the crown land portion 5 in a tire axial direction are provided. The lateral sipes 10 include first lateral sipes 11 and second lateral sipes 12. Each first lateral sipe 11 has a constant depth over an entire range in a sipe length direction thereof. Each second lateral sipe 12 includes a shallow bottom portion 15 located in a center portion in a sipe length direction thereof, where a depth thereof is partially reduced.",
  "title": "HEAVY DUTY TIRE"
}