{
  "$type": "site.standard.document",
  "description": "[Object] To provide a pneumatic tire 2 from which static electricity is easily discharged. [Solution] The tire 2 includes penetration portions 8, an under tread 6, a belt 18, a carcass 16, and clinches 12. The carcass 16 includes a large number of cords aligned with each other, and a conductive…",
  "path": "/patents/974074",
  "publishedAt": "2014-06-04T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60C1/0008",
    "SUMITOMO RUBBER IND [JP]"
  ],
  "textContent": "[Object] To provide a pneumatic tire 2 from which static electricity is easily discharged. [Solution] The tire 2 includes penetration portions 8, an under tread 6, a belt 18, a carcass 16, and clinches 12. The carcass 16 includes a large number of cords aligned with each other, and a conductive topping rubber. The electric resistance Rc of the carcass which is represented by the following mathematical formula is less than 1.0 × 10 8 ©. Rc = Á / g / 2 × 3.14 × r × L × 10 In the mathematical formula, p is the volume resistivity (©·cm) of the topping rubber of the carcass, g is the minimum thickness (mm) of the topping rubber, r is the distance (m) from the axis of the tire to an outer end, in the radial direction, of the clinch, and L is the length (m) of the carcass from an end of the reinforcing layer to the outer end, in the radial direction, of the clinch.",
  "title": "PNEUMATIC TIRE"
}