{
  "$type": "site.standard.document",
  "description": "Directional pneumatic tire comprising a tread portion 2, a pair of center circumferential main grooves3 extending on both side of a tire equatorial plane Co, a center land portion 4 between the center circumferential main grooves 3, sipes 5 provided within the center land portion 4, a plurality of…",
  "path": "/patents/996373",
  "publishedAt": "2012-10-31T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60C11/03",
    "SUMITOMO RUBBER IND [JP]"
  ],
  "textContent": "Directional pneumatic tire comprising a tread portion 2, a pair of center circumferential main grooves3 extending on both side of a tire equatorial plane Co, a center land portion 4 between the center circumferential main grooves 3, sipes 5 provided within the center land portion 4, a plurality of v-shaped grooves 11 each provided separately in the circumferential direction of the tire within the center land portion 4, each v-shaped groove 11 having a peak 13 located in a middle area of the center land portion 4, a first inclined portion 14a extending from the peak 13 to one side edge 4Ea of the center land portion 4, and a second inclined portion 14b extending from the peak 13 to the other side edge 4Eb of the center land portion 4, a first inclined sub-groove 15a and a second inclined sub-groove 15b provided between a pair of v-shaped grooves 11.",
  "title": "Tread band of a pneumatic tire"
}