{
  "$type": "site.standard.document",
  "description": "A method and apparatus for measuring a thickness of a tire tread is disclosed. The method comprising the steps of: providing a tire tread having a first tread layer (160) formed of an electrically conductive compound and a second tread layer (130) formed of an electrically nonconductive compound…",
  "path": "/patents/1401892",
  "publishedAt": "2025-07-23T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60C11/243",
    "GOODYEAR TIRE & RUBBER [US]"
  ],
  "textContent": "A method and apparatus for measuring a thickness of a tire tread is disclosed. The method comprising the steps of: providing a tire tread having a first tread layer (160) formed of an electrically conductive compound and a second tread layer (130) formed of an electrically nonconductive compound; continuously conveying the tire tread; arranging a first sensor (150) and a second sensor (155) above and below the tire tread, respectively, wherein the first and second sensors (150, 155) being configured for emitting first and second radiation beams (152, 166), respectively, into the tire tread, and wherein the first and second sensors (150, 155) are connected together at a preferably fixed sensor distance or sensor height (D); receiving from the first radiation beam a first reflected radiation beam (162) from a surface (161) of the first tread layer (160) and determining a first distance (d1); receiving from the second radiation beam (166) a second reflected radiation beam (165) from an interface (141) of the first and second tread layers (160, 130) and determining a second distance (d2); receiving from the second radiation beam (166) a third reflected radiation beam (164) from a surface of the second tread layer (130) and determining a third distance (d3), and carrying out a material thickness measurement of the first and second tread layers (120, 160) by emitting the first and second radiation beams (152, 166) by the first and second sensors (150, 155), respectively, receiving the first, second, and third reflected radiation beams (162, 165, 164), and then determining a thickness (d4) of the first tread layer (160) using said first, second and third distances (d1, d2, d3) and said sensor distance or sensor height (D).",
  "title": "METHOD AND APPARATUS FOR TREAD MEASUREMENT"
}