{
  "$type": "site.standard.document",
  "description": "Each sipe wall surface of a pair of the sipe wall surfaces of a sipe provided in a tread portion of a pneumatic tire includes, along a sipe depth direction, at least two ridge portions and at least one valley portion bending like waves, at every different position in a sipe extension direction. In…",
  "path": "/patents/1421980",
  "publishedAt": "2023-08-23T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60C11/0304",
    "YOKOHAMA RUBBER CO LTD [JP]"
  ],
  "textContent": "Each sipe wall surface of a pair of the sipe wall surfaces of a sipe provided in a tread portion of a pneumatic tire includes, along a sipe depth direction, at least two ridge portions and at least one valley portion bending like waves, at every different position in a sipe extension direction. In a case where the sipe is viewed along the sipe depth direction, a recess depth of the valley portion from the ridge portion on one wall surface of the sipe wall surfaces varies depending on a position in the extension direction, the valley portion extends from a position at which the recess depth is maximized toward a position at which the recess depth is minimized, and the recess depth decreases as the valley portion extends from the side of the maximum-depth valley portion toward the maximum ridge portion. The sipe is provided in at least one of a first half-tread region on a first side and a second half-tread region on a second side in a tire width direction.",
  "title": "PNEUMATIC TIRE"
}