Title:
空気入りタイヤ
Document Type and Number:
Japanese Patent JP5351905
Kind Code:
B2
Abstract:
To improve water evacuation property while preventing uneven wear, as well as to significantly improve the on-ice/snow performances by optimizing a tread pattern. This pneumatic tire has, in at least a part of a tread portion 1, a small block group G B , the small block group including a plurality of small blocks 3 arranged close together. The small block group G B comprises at least one circumferential main groove positioned 4 including see-through groove portion which linearly extends in the tread circumferential direction and at least one rib-like land portion 6 provided adjacently to the circumferential main groove and forming a groove side face 5 of the circumferential main groove 4 and continuously extending in the circumferential direction. A number density D of the small blocks is set within a range of 0.003 to 0.04 (pieces/mm 2 ), the number density D representing the number of the small blocks per unit of an actual ground contact area of the small block group.
Inventors:
Naoya Ochi
Application Number:
JP2010550427A
Publication Date:
November 27, 2013
Filing Date:
January 15, 2010
Export Citation:
Assignee:
Bridgestone Corporation
International Classes:
B60C11/03; B60C11/11; B60C11/12
Domestic Patent References:
| JPH08318710A | 1996-12-03 | |||
| JP2000264019A | 2000-09-26 |
Attorney, Agent or Firm:
Kenji Sugimura
Kazuyuki Tomita
Takahiro Yamazaki
Kazuyuki Tomita
Takahiro Yamazaki