{
  "$type": "site.standard.document",
  "description": "A pneumatic tire comprises a tread (1) provided with at least two circumferential main grooves (2,3,6) and a rib (4) defined in a tread central portion by the circumferential main grooves, wherein an auxiliary groove (5,7,8,9,10) is formed in the tread central portion, the auxiliary groove having a…",
  "path": "/patents/1006420",
  "publishedAt": "2012-01-11T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60C11/03",
    "BRIDGESTONE CORP [JP]"
  ],
  "textContent": "A pneumatic tire comprises a tread (1) provided with at least two circumferential main grooves (2,3,6) and a rib (4) defined in a tread central portion by the circumferential main grooves, wherein an auxiliary groove (5,7,8,9,10) is formed in the tread central portion, the auxiliary groove having a circumferential groove portion (5C) extending in a tire equator direction and an axial groove portion (5W,5W 1 ,5W 2 ) extending from an end of the circumferential groove portion in such a manner that the axial groove portion is bent at an acute angle to the circumferential groove portion, and at least an end of the auxiliary groove is open into the circumferential main groove.",
  "title": "Pneumatic tire"
}