{
  "$type": "site.standard.document",
  "description": "A land portion of a pneumatic tire 1 comprises a land portion 10 having groove wall 10a a second land portion 20 having a groove wall 20a. The groove walls 10a, 20a meander. A groove width of a main groove 50 changes at a predetermined repetition cycle. The main groove 50 includes: a wide groove…",
  "path": "/patents/995428",
  "publishedAt": "2012-12-05T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60C11/03",
    "BRIDGESTONE CORP [JP]"
  ],
  "textContent": "A land portion of a pneumatic tire 1 comprises a land portion 10 having groove wall 10a a second land portion 20 having a groove wall 20a. The groove walls 10a, 20a meander. A groove width of a main groove 50 changes at a predetermined repetition cycle. The main groove 50 includes: a wide groove portion 50A having a predetermined width; and a narrow groove portion 50B which is continuous with the wide groove portion and which is narrower than the predetermined width. A relationship of ¸1 > ¸2 is satisfied where ¸1 refers to an angle formed between a tire normal line RL and the groove wall 10a or the groove wall 20a forming the wide groove portion 50A and ¸2 refers to an angle formed between the tire normal line RL and the groove wall 10a or the groove wall 20a forming the narrow groove portion 50B.",
  "title": "TIRE"
}