公开(公告)号：US20150321518A1

公开(公告)日：2015-11-12

申请号：US14648563

申请日：2013-11-28

Applicant: BRIDGESTONE CORPORATION

Inventor： Shinsaku KATAYAMA ,  Eisuke SETA ,  Yoshio KAJI ,  Masafumi KOIDE ,  Takayuki KURATA ,  Hiroyuki KATSUNO ,  Masakazu AMANO ,  Ataka TAKEI

IPC: B60C11/04 ,  B60C11/12 ,  B60C11/13 ,  B60C11/03

CPC classification number: B60C11/04 ,  B60C11/0302 ,  B60C11/0309 ,  B60C11/0332 ,  B60C11/11 ,  B60C11/12 ,  B60C11/1236 ,  B60C11/13 ,  B60C11/1369 ,  B60C2011/0341 ,  B60C2011/0344 ,  B60C2011/0346 ,  B60C2011/0365 ,  B60C2011/0369 ,  B60C2011/0393 ,  B60C2011/1213 ,  B60C2011/1268

Abstract: A pneumatic tire (10) has, in the surface of the tread (11), a central circumferential groove (12) located at the center of the contact patch width and extending circumferentially around the tire, a plurality of longitudinal grooves (13 (13a, 13b)) formed on the axially outside of the central circumferential groove (12), lug grooves (15), and blocks (16 (16a to 16c)) defined by the central circumferential groove (12), the longitudinal grooves (13), and the lug grooves (15). Each of the lug grooves (15) is formed such that its width in the shoulder region is greater than its width in the central region, and the sum of the groove area of the central circumferential groove (12) and the groove area of the longitudinal grooves (13) is smaller than the area of the lug grooves (15). As a result, the pneumatic tire (10) not only secures the wet braking performance and wear resistance performance on paved roads, but also improves the acceleration performance and braking performance and the steering stability performance on snowy roads.

Abstract translation: 一种充气轮胎（10）在胎面（11）的表面具有位于接触片宽度的中心并沿轮胎周向延伸的中心圆周槽（12），多个纵向槽（13（13a） ，13b）），形成在中心周向槽（12）的轴向外侧，横向槽（15）和由中心周向槽（12）限定的块（16（16a至16c）），纵向槽（13） ，和横向花纹槽（15）。 每个横向花纹沟（15）形成为使得其肩部区域中的宽度大于其在中心区域中的宽度，并且中央圆周凹槽（12）的沟槽面积与纵向 槽（13）小于横向花纹沟（15）的面积。 因此，充气轮胎（10）不仅可以确保铺路的湿式制动性能和耐磨性，而且可以提高雪道上的加速性能，制动性能和操纵稳定性。

公开(公告)号：US20150298506A1

公开(公告)日：2015-10-22

申请号：US14648304

申请日：2013-11-28

Applicant: BRIDGESTONE CORPORATION

Inventor： Shinsaku KATAYAMA ,  Eisuke SETA ,  Yoshio KAJI ,  Masafumi KOIDE ,  Takayuki KURATA ,  Hiroyuki KATSUNO ,  Masakazu AMANO ,  Ataka TAKEI

IPC: B60C11/03 ,  B60C5/00 ,  B60C11/12

CPC classification number: B60C11/0311 ,  B60C5/00 ,  B60C11/0302 ,  B60C11/0306 ,  B60C11/033 ,  B60C11/0332 ,  B60C11/1236 ,  B60C11/1263 ,  B60C11/1369 ,  B60C2011/0313 ,  B60C2011/0341 ,  B60C2011/0344 ,  B60C2011/0369 ,  B60C2011/0374 ,  B60C2011/1209

Abstract: A pneumatic tire (10), which has, in the surface of the tread (11), lug grooves (15) on one side extending from one axial edge towards the axial center of the tire in such a manner as to intersect with the circumferential direction of the tire and lug grooves (15) on the other side extending in a symmetrically opposite direction from the axial center towards the other axial edge of the tire, has at least one circumferential groove (12) extending circumferentially around the tire. Also, circumferential grooves (12, 13a, 13b) are so formed as to satisfy a relationship of “1≦(S/L)≦3” where L is the axial length of the central region, which is the region enclosed by two straight parallel lines each passing through the center between the contact width center (CL) and the contact edge with the shoulder regions being the regions axially outside of the parallel lines, and S is the total of the groove areas of the circumferential grooves (12, 13a, 13b) disposed in the central region. Therefore, the pneumatic tire (10) not only secures the steering stability performance on wet road surfaces, but also improves the steering stability and wear resistance performance on dry road surfaces.

Abstract translation: 一种充气轮胎（10），其在所述胎面（11）的表面具有从一个轴向边缘朝向所述轮胎的轴向中心延伸的一侧的横向槽（15），以与所述周向 在轮胎的轴向中心朝向轮胎的另一个轴向边缘的对称相反方向延伸的另一侧的轮胎和横向花纹槽（15）的方向具有沿轮胎周向延伸的至少一个周向槽（12）。 此外，周向槽（12,13a，13b）形成为满足“1＆nlE;（S / L）＆nlE; 3”的关系，其中L是中心区域的轴向长度，其是由两个 每个穿过接触宽度中心（CL）和与胎肩区域的接触边缘之间的中心的平行线是位于平行线的轴向外侧的区域，S是周向槽（12， 13a，13b）。 因此，充气轮胎（10）不仅可以确保湿路面的操纵稳定性，而且可以提高干路面上的操纵稳定性和耐磨性能。