{
  "$type": "site.standard.document",
  "description": "A pneumatic tire (T) has a tread rubber (10) provided in a tread portion (3). The tread rubber (10) comprises a cap rubber (12) which forms a contact surface, a base rubber (11) arranged in an inner peripheral side of the cap rubber (12), and a cushion rubber (13) formed by a rubber having a…",
  "path": "/patents/1002300",
  "publishedAt": "2012-05-16T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60C11/00",
    "TOYO TIRE & RUBBER CO [JP]"
  ],
  "textContent": "A pneumatic tire (T) has a tread rubber (10) provided in a tread portion (3). The tread rubber (10) comprises a cap rubber (12) which forms a contact surface, a base rubber (11) arranged in an inner peripheral side of the cap rubber (12), and a cushion rubber (13) formed by a rubber having a smaller storage elastic modulus E' than the cap rubber (12) and the base rubber (11). The cap rubber (12) has a penetration portion (12a) which reaches a bottom surface of the tread rubber (10) from the contact surface in a center region. The base rubber (11) is terminated by the penetration portion (12a). The cushion rubber (13) extends from a side surface of the tread rubber (10) toward the center region along the base rubber (11), and bends to an outer peripheral side from a portion near a terminating portion (11 a) of the base rubber (11) so as to reach the contact surface.",
  "title": "Pneumatic tire"
}