{
  "$type": "site.standard.document",
  "description": "Provided is a pneumatic tire that allows reduction of vibration of a tread portion to reduce noise without depending on a groove volume.A pneumatic tire 1 has a tread portion 2. The pneumatic tire 1 includes; tread rubber 2G disposed in the tread portion 2; and a vibration absorber 10 disposed at a…",
  "path": "/patents/1408008",
  "publishedAt": "2024-04-03T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60C19/002",
    "SUMITOMO RUBBER IND [JP]"
  ],
  "textContent": "Provided is a pneumatic tire that allows reduction of vibration of a tread portion to reduce noise without depending on a groove volume.A pneumatic tire 1 has a tread portion 2. The pneumatic tire 1 includes; tread rubber 2G disposed in the tread portion 2; and a vibration absorber 10 disposed at a tire inner cavity in the tread portion 2. A natural angular frequency ratio α of the vibration absorber 10 relative to the tread rubber 2G and a damping ratio ζa of the vibration absorber 10 satisfy the following expressions (1) and (2). 0.5≤α≤0.93.1≤4ζa+3α≤5.5",
  "title": "PNEUMATIC TIRE"
}