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1. 发明公开

EP2174805A1 PNEUMATIC TIRE 有权
标题翻译：充气轮胎
公开(公告)号：EP2174805A1
公开(公告)日：2010-04-14
申请号：EP08777010.3
申请日：2008-05-29
申请人： Bridgestone Corporation
发明人： KAJI, Yoshio , WATABE, Ryoichi , SAEKI, Kentaro , KUROKAWA, Makoto
IPC分类号： B60C11/12
CPC分类号： B60C11/12 , B60C11/1218 , B60C11/1263
摘要： A pneumatic tire having enhanced on-ice braking performance achieved by further increasing the amount of water that can be sucked up into sipes. In the pneumatic tire,blocks(26) partitioned by circumferential grooves and lateral grooves are formed in the tread. A sipe(28) is formed in a block(26), and a fine structure (32) having a height in the range of from 1/50 of the sipe width t to less than 1/10 of the sipe width t is formed on a sipe wall surface. This reduces fluid friction coefficient of water relative to the sipe wall surface to a lower level than conventional products. As a result, when water staying on ice comes into contact with the sipe wall surface, the water is more easily sucked up into the sipe. The construction increases the amount of water that can be sucked up into the sipe(28). or the removal amount of water that stays on ice etc., and this enhances braking performance(friction characteristics) on ice.
摘要翻译：通过进一步增加可被吸入刀槽花纹中的水量而实现的具有增强的冰上制动性能的充气轮胎。在充气轮胎中，在胎面中形成由周向槽和横向槽分隔的块（26）。在花纹块（26）上形成刀槽花纹（28），并且形成高度在刀槽花纹宽度t的1/50至小于刀槽花纹宽度t的1/10的范围内的精细结构（32）在刀槽花纹壁面上。这使水相对于刀槽花纹壁表面的流体摩擦系数降低到比常规产品更低的水平。结果，当冰上的水与刀槽花纹壁表面接触时，水更容易被吸入刀槽花纹中。该结构增加了可以吸入刀槽花纹（28）的水量。或停留在冰上的水的去除量等，并且这增强了冰上的制动性能（摩擦特性）。

2. 发明授权

EP3156259B1 TIRE 有权
公开(公告)号：EP3156259B1
公开(公告)日：2018-10-31
申请号：EP15807378.3
申请日：2015-05-25
申请人： Bridgestone Corporation
发明人： KATAYAMA, Shinsaku , KAJI, Yoshio , KURATA, Takayuki
IPC分类号： B60C11/03 , B60C11/12
CPC分类号： B60C11/0302 , B60C11/03 , B60C11/033 , B60C11/0332 , B60C11/12 , B60C11/1236 , B60C2011/0344 , B60C2011/0374
摘要： A tire having V-shaped lug grooves displays both improved grip performance on snow and anti-hydroplaning performance. To that end, an absolute value of difference between a lug groove diagonal angle ( ¸ LG ), which is an angle of diagonal lug grooves (13) in a tread (11) surface with respect to a tire axial direction, and a profile line diagonal angle ( ¸ FP ), which is an angle of a normal line of a leading-end profile line of a contact patch shape of the tire (10) with respect to the tire axial direction, is set to 0° or more and 60° or less at respective positions in the tire axial direction. And diagonal lug grooves (13) are formed such that absolute values of difference in a center portion, which is defined to be 20% in width of a contact patch width (W) with an equatorial plane at a center, and an intermediate portion, which is defined to be 20% of the contact patch width (W) on each axially outer side adjacent to the center portion, are larger than an absolute value of difference in a shoulder portion, which is defined to be 20% of the contact patch width (W) on each axially outer side adjacent to the intermediate portion.

3. 发明公开

EP2913205A1 PNEUMATIC TIRE 失效
标题翻译：充气轮胎
公开(公告)号：EP2913205A1
公开(公告)日：2015-09-02
申请号：EP13849621.1
申请日：2013-10-23
申请人： Bridgestone Corporation
发明人： KAJI, Yoshio , KATAYAMA, Shinsaku , SETA, Eisuke , KURATA, Takayuki
IPC分类号： B60C11/12
CPC分类号： B60C11/1218 , B60C11/124 , B60C11/1259 , B60C2011/1213
摘要： A pneumatic tire, having a plurality of sipes formed in land portions of a tread thereof so as to each extend in the tire width direction, characterized in that: in a cross section of the land portion orthogonal to the sipe extending direction, provided that an imaginary sipe main line links two ends in the tire radial direction of each sipe, at least two of the sipes are "inclined sipes" each having the sipe main line inclined with respect to the tire radial direction; each inclined sipe has inner bent portions each protruding with respect to the sipe main line with peaks positioned deeper than 20% of the sipe depth; and the sipe main line(s) of at least one of the inclined sipes are inclined in a direction opposite, with respect to the tire radial direction, to the sipe main line of any of the other inclined sipes.
摘要翻译： 1。一种充气轮胎，其特征在于，在胎肩部的与刀槽花纹延伸方向正交的剖面上，在轮胎宽度方向的胎面陆部形成有多条刀槽花纹，假想的刀槽花纹的主线连结各刀槽花纹的轮胎径向的两端，至少两条刀槽花纹是刀槽花纹的主线相对于轮胎径向倾斜的“倾斜刀槽花纹” 每个倾斜刀槽花纹具有内弯曲部分，每个内弯曲部分相对于刀槽花纹干线突出，并且峰值位于比刀槽花纹深度的20％更深; 并且至少一个所述倾斜刀槽花纹的所述刀槽花纹主干线相对于所述轮胎径向相对于所述其他倾斜刀槽花纹中的任一个的刀槽花纹主干线向相反方向倾斜。

4. 发明公开

EP2774782A1 PNEUMATIC TIRE 失效
标题翻译：充气轮胎
公开(公告)号：EP2774782A1
公开(公告)日：2014-09-10
申请号：EP12846769.3
申请日：2012-10-31
申请人： Bridgestone Corporation
发明人： KAJI, Yoshio
IPC分类号： B60C11/12
CPC分类号： B60C11/1218 , B60C11/0306 , B60C11/1263 , B60C2011/1213 , B60C2011/1227
摘要： Provided is a pneumatic tire including a land portion provided with a sipe, which is capable of simultaneously providing snow performance, dry performance, and wet performance all at high level in a single land portion. The pneumatic tire includes a land portion 2 on a tread portion. The land portion 2 is provided with a sipe 5 having amplitude in a tire circumferential direction and extending in a tire width direction. In a depth direction extending from a land portion surface S toward an inner side in a tire radial direction, sipe 5 includes: a land portion's surface-side part 5a 1 bent toward tire circumferential direction from land portion surface S; and a land portion's bottom-side part 5a 2 bent in a direction different from a direction of land portion's surface-side part 5a 1 or bent toward tire circumferential direction by a displacement different from a displacement of land portion's surface-side part 5a 1 .
摘要翻译：本发明提供一种充气轮胎，该充气轮胎包括设置有刀槽花纹的接地部，该接地部能够在单个接地部同时以高水平同时提供雪地性能，干燥性能和湿地性能。充气轮胎包括胎面部分上的陆部2。在陆部2上设置有在轮胎周向上具有振幅并且在轮胎宽度方向上延伸的刀槽花纹5。在从陆部表面S朝向轮胎径向内侧延伸的深度方向上，刀槽花纹5包括：从陆部表面S向轮胎周向弯曲的陆部表面侧部分5a1; 以及在与陆部表面侧部分5a1的方向不同的方向上弯曲或者朝向轮胎周向弯曲与陆部表面侧部分5a1的位移不同的位移的陆部的底侧部分5a2。

5. 发明公开

EP4424523A1 PNEUMATIC TIRE 审中-公开
公开(公告)号：EP4424523A1
公开(公告)日：2024-09-04
申请号：EP22886365.0
申请日：2022-05-12
申请人： BRIDGESTONE CORPORATION
发明人： MATSUMOTO, Hiroyuki , KAJI, Yoshio , NOMURA, Hiroshi
IPC分类号： B60C11/03 , B60C11/12
CPC分类号： B60C11/03 , B60C11/12
摘要： Provided is a pneumatic tire in which sipe units with minute sipes are repeatedly arranged in a land portion; at least one end in an extending direction of the minute sipe of at least one of the minute sipes terminates within the land portion; w1(w2) × h is 150 (mm2) or less, and a sipe density is 0.15 (1/mm) or more.

6. 发明授权

EP2774782B1 PNEUMATIC TIRE 失效
公开(公告)号：EP2774782B1
公开(公告)日：2018-06-06
申请号：EP12846769.3
申请日：2012-10-31
申请人： Bridgestone Corporation
发明人： KAJI, Yoshio
IPC分类号： B60C11/12
CPC分类号： B60C11/1218 , B60C11/0306 , B60C11/1263 , B60C2011/1213 , B60C2011/1227
摘要： Provided is a pneumatic tire including a land portion provided with a sipe, which is capable of simultaneously providing snow performance, dry performance, and wet performance all at high level in a single land portion. The pneumatic tire includes a land portion 2 on a tread portion. The land portion 2 is provided with a sipe 5 having amplitude in a tire circumferential direction and extending in a tire width direction. In a depth direction extending from a land portion surface S toward an inner side in a tire radial direction, sipe 5 includes: a land portion's surface-side part 5a 1 bent toward tire circumferential direction from land portion surface S; and a land portion's bottom-side part 5a 2 bent in a direction different from a direction of land portion's surface-side part 5a 1 or bent toward tire circumferential direction by a displacement different from a displacement of land portion's surface-side part 5a 1 .

7. 发明公开

EP2927025A1 PNEUMATIC TIRE 有权
标题翻译：充气轮胎
公开(公告)号：EP2927025A1
公开(公告)日：2015-10-07
申请号：EP13858626.8
申请日：2013-11-28
申请人： Bridgestone Corporation
发明人： KATAYAMA, Shinsaku , SETA, Eisuke , KAJI, Yoshio , KOIDE, Masafumi , KURATA, Takayuki , KATSUNO, Hiroyuki , AMANO, Masakazu , TAKEI, Ataka
IPC分类号： B60C11/11 , B60C11/04 , B60C11/113 , B60C11/12 , B60C11/13
CPC分类号： 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
摘要： 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.
摘要翻译：一种充气轮胎（10），其在胎面（11）的表面具有一侧的花纹槽（15），该花纹槽从一个轴向边缘向轮胎的轴向中心延伸，以便与轮胎轮胎的方向和在另一侧上从轮胎的轴向中心朝向另一轴向边缘在对称相反方向上延伸的横向花纹沟（15）具有围绕轮胎沿周向延伸的至少一个周向沟槽（12）。此外，圆周槽（12,13a，13b）形成为满足“1≤（S / L）≤3”的关系，其中L是中央区域的轴向长度，该中央区域是由两个直线每个平行线穿过接触宽度中心（CL）和接触边缘之间的中心，肩部区域是平行线轴向外侧的区域，S是圆周凹槽（12,13a）的凹槽面积的总和，13b）设置在中央区域中。因此，充气轮胎（10）不仅确保湿路面上的操纵稳定性能，而且还提高干路面上的操纵稳定性和耐磨性能。

8. 发明公开

EP3725828A1 TIRE 审中-公开
公开(公告)号：EP3725828A1
公开(公告)日：2020-10-21
申请号：EP18887321.0
申请日：2018-12-14
申请人： Bridgestone Corporation
发明人： OISHI, Shigeki , KAJI, Yoshio
IPC分类号： C08J9/06 , B60C11/00 , C08K3/04 , C08K3/36 , C08L21/00 , C08L61/04
摘要： In order to make it possible to maintain a low dynamic storage modulus at low temperatures in a tread rubber, which is the portion of a tyre to be in contact with a road surface, i.e., to allow the rubber to remain soft, without changing in the dynamic storage modulus at normal temperature of the tread rubber, provided is a tyre including a foamed rubber on a surface of a tread rubber, the foamed rubber being constituted from a rubber composition in which a phenol resin is blended.

9. 发明授权

EP2913205B1 PNEUMATIC TIRE 失效
公开(公告)号：EP2913205B1
公开(公告)日：2018-06-06
申请号：EP13849621.1
申请日：2013-10-23
申请人： Bridgestone Corporation
发明人： KAJI, Yoshio , KATAYAMA, Shinsaku , SETA, Eisuke , KURATA, Takayuki
IPC分类号： B60C11/12
CPC分类号： B60C11/1218 , B60C11/124 , B60C11/1259 , B60C2011/1213
摘要： A pneumatic tire, having a plurality of sipes formed in land portions of a tread thereof so as to each extend in the tire width direction, characterized in that: in a cross section of the land portion orthogonal to the sipe extending direction, provided that an imaginary sipe main line links two ends in the tire radial direction of each sipe, at least two of the sipes are "inclined sipes" each having the sipe main line inclined with respect to the tire radial direction; each inclined sipe has inner bent portions each protruding with respect to the sipe main line with peaks positioned deeper than 20% of the sipe depth; and the sipe main line(s) of at least one of the inclined sipes are inclined in a direction opposite, with respect to the tire radial direction, to the sipe main line of any of the other inclined sipes.

10. 发明公开

EP2930035A1 PNEUMATIC TIRE 有权
标题翻译：充气轮胎
公开(公告)号：EP2930035A1
公开(公告)日：2015-10-14
申请号：EP13859179.7
申请日：2013-10-25
申请人： Bridgestone Corporation
发明人： KATSUNO, Hiroyuki , ISHIKAWA, Satoshi , KATAYAMA, Shinsaku , SETA, Eisuke , KAJI, Yoshio , KURATA, Takayuki
IPC分类号： B60C11/11 , B60C11/04 , B60C11/13
CPC分类号： B60C11/11 , B60C5/00 , B60C11/0302 , B60C11/04 , B60C11/1236 , B60C11/13 , B60C11/1369 , B60C11/1384 , B60C2011/0344 , B60C2011/0346 , B60C2011/1213
摘要： A pneumatic tire, comprising: a tread surface; a plurality of grooves formed in the tread surface, including a plurality of widthwise grooves each extending from a corresponding tread end on the inner side in the tread width direction and a plurality of circumferential grooves each extending in the tread circumferential direction to intersect the widthwise grooves; blocks demarcated by the plurality of grooves; and a chamfered portion formed at a corner, on the trailing edge side and on the outer side in the tread width direction, of each block.
摘要翻译：一种充气轮胎，包括：胎面表面; 多个槽，其形成在胎面表面上，多个宽度方向槽分别从胎面宽度方向内侧的相应胎面端延伸，多个周向槽沿胎面周向方向延伸以与宽度方向槽相交 ; 由多个凹槽划分的块; 以及形成在每个花纹块的在胎面宽度方向上的后缘侧和外侧的拐角处的倒角部。

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