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1. 发明公开

EP4282668A1 PNEUMATIC TIRE 审中-公开
公开(公告)号：EP4282668A1
公开(公告)日：2023-11-29
申请号：EP21921189.3
申请日：2021-11-05
申请人： BRIDGESTONE CORPORATION
发明人： HATANAKA, Shintaro , KUWAYAMA, Isao
IPC分类号： B60C15/06
摘要： Provided is a pneumatic tire including: a pair of bead cores embedded in a pair of bead portions; and a carcass including one or more carcass plies extending in a toroidal form between the pair of bead cores, wherein bead fillers are disposed on an outer side in a tire radial direction of the bead cores, rubber chafers are provided on an outer side in a tire width direction of the bead fillers, and when a storage modulus of the bead fillers is E1', and a storage modulus of the rubber chafers is E2', the ratio E2'/E1' satisfies 0.4 ≤ E2'/E1'

2. 发明授权

EP3205515B1 PNEUMATIC RADIAL TIRE FOR PASSENGER VEHICLE 失效
公开(公告)号：EP3205515B1
公开(公告)日：2018-08-15
申请号：EP15848807.2
申请日：2015-09-08
申请人： Bridgestone Corporation
发明人： HATANAKA, Shintaro , KUWAYAMA, Isao
IPC分类号： B60C11/12 , B60C9/08 , B60C11/00 , B60C11/03 , B60C3/04
CPC分类号： B60C11/0332 , B60C3/04 , B60C11/0008 , B60C11/03 , B60C11/0306 , B60C11/032 , B60C11/1236 , B60C2011/0016 , B60C2011/0025 , B60C2011/0341 , B60C2011/0353 , Y02T10/862
摘要： A passenger vehicle pneumatic radial tire that achieves improved wet performance and rolling resistance performance in a narrow-width, large-diameter radial tire is provided. When the tire is attached to a rim and set to an internal pressure of 250 kPa or more, a ratio SW/OD between a sectional width SW and an outer diameter OD (mm) of the tire is 0.26 or less in the case where the sectional width SW of the tire is less than 165 (mm), and SW and OD satisfy a relationship 2.135 × SW + 282.3 ‰¤ OD in the case where SW is 165 (mm) or more. The tread rubber has dynamic storage modulus E' of 6.0 MPa to 12.0 MPa, and loss tangent tan´ of 0.05 to 0.15. In at least one land portion, a plurality of sipes are arranged with a predetermined pitch length L, and a land portion width W, a tire widthwise sipe component total length Ws ‰¤ of the sipes within one pitch area of the pitch length L, the pitch length L, and a tire circumferential sipe component total length Ls of the sipes within one pitch area of the pitch length L satisfy relationships 0.4W ‰¤ Ws ‰¤ 1.2W and 0.6L ‰¤ Ls ‰¤ 3L.

3. 发明公开

EP3202598A1 RUN-FLAT TIRE 有权
标题翻译： RUN-FLAT轮胎
公开(公告)号：EP3202598A1
公开(公告)日：2017-08-09
申请号：EP15847494.0
申请日：2015-08-21
申请人： Bridgestone Corporation
发明人： KUWAYAMA, Isao , HATANAKA, Shintaro
IPC分类号： B60C17/00 , B60C3/04
CPC分类号： B60C3/04 , B60C17/0009 , B60C2015/061 , B60C2017/0054 , B60C2017/0072
摘要： The run-flat tire of this disclosure includes a tread portion, a pair of sidewall portions continuous, bead portions, side reinforcing rubbers with crescent-like cross section, and a carcass, wherein: when the tire is mounted to a rim, and an internal pressure of 250 kPa or more is applied to the tire, in a case where a sectional width SW of the tire is less than 165 mm, a ratio of the sectional width SW to an outer diameter OD of the tire, SW/OD, is 0.26 or less; and in a case where the sectional width SW of the tire is 165 mm or more, the sectional width SW and the outer diameter OD of the tire satisfy a relation expression OD≥2.135×SW+282.3 (mm); and when H1 is a tire radial maximum length of the side reinforcing rubber in a tire widthwise cross section in a reference state where the tire is mounted to a rim, applied a predetermined internal pressure and applied no load, a relation expression 10(mm)≤(SW/OD)×H1≤20(mm) is satisfied.
摘要翻译：本公开的泄气保用轮胎包括胎面部，连续的一对胎侧部，胎圈部，具有月牙状横截面的胎侧增强橡胶以及胎体，其中：当轮胎安装至轮辋时，以及对轮胎施加250kPa以上的内压，在轮胎的截面宽度SW小于165mm的情况下，轮胎的截面宽度SW与轮胎的外径OD之比SW / OD，是0.26或更小; 在轮胎的截面宽度SW为165mm以上的情况下，轮胎的截面宽度SW和外径OD满足关系式OD≥2.135×SW + 282.3（mm）。在轮胎安装于轮辋的基准状态下的轮胎宽度方向截面中的H1为轮胎径向最大长度的情况下，施加规定的内压而不施加负荷时，将关系式10（mm） ≤（SW / OD）×H1≤20（mm）。

4. 发明公开

EP3202592A1 PNEUMATIC RADIAL TIRE FOR PASSENGER VEHICLE AND METHOD FOR USING THE SAME 有权
标题翻译：客运车辆的气动径向轮胎及其使用方法
公开(公告)号：EP3202592A1
公开(公告)日：2017-08-09
申请号：EP17160842.5
申请日：2012-11-02
申请人： Bridgestone Corporation
发明人： HATANAKA, Shintaro , MATSUMOTO, Hiroyuki , KUWAYAMA, Isao
IPC分类号： B60C11/03 , B60C3/04 , B60C11/04
CPC分类号： B60C3/04 , B60C11/0306 , B60C11/032 , B60C11/033 , B60C11/04 , B60C11/12 , B60C11/1236 , B60C2011/0341 , B60C2011/0344 , B60C2011/0381 , B60C2011/1209
摘要： An object of the present invention is to adequately control relationship between a cross sectional width SW and an outer diameter OD of a pneumatic radial tire for a passenger vehicle. Specifically, a ground contact surface 1 of the tread of the pneumatic radial tire for a passenger car of the present invention is provided with either, as a groove, only at least one main groove 2a extending in the tread circumferential direction or, as grooves, only the main groove 2a and at least one auxiliary groove 2b other than the main groove, wherein the auxiliary groove has a groove width ≤ 2 mm in a tread widthwise region and a negative ratio of the main groove 2a is in the range of 12% to 20% (inclusive of 12% and 20%).
摘要翻译：本发明的目的在于充分控制乘用车用充气子午线轮胎的横截面宽度SW和外径OD之间的关系。具体而言，本发明的乘用车用充气子午线轮胎的胎面的接地面1，作为槽设置有至少一个沿胎面周向延伸的主槽2a，或者作为槽，只有主槽2a和除主槽之外的至少一个辅助槽2b，其中辅助槽在胎面宽度方向区域具有≤2mm的槽宽度，并且主槽2a的负比率在12％到20％（包括12％和20％）。

5. 发明公开

EP3064373A1 PNEUMATIC TIRE 有权
标题翻译：充气轮胎
公开(公告)号：EP3064373A1
公开(公告)日：2016-09-07
申请号：EP14857635.8
申请日：2014-07-01
申请人： Bridgestone Corporation
发明人： HATANAKA, Shintaro , KUWAYAMA, Isao
IPC分类号： B60C9/18 , B60C9/22
CPC分类号： B60C9/20 , B60C9/02 , B60C9/2009 , B60C9/22 , B60C9/28 , B60C11/02 , B60C11/03 , B60C11/04 , B60C15/00 , B60C15/0036 , B60C15/0045 , B60C2009/2016 , B60C2009/2019 , B60C2009/2022 , B60C2009/2233 , B60C2009/2261 , B60C2009/2266 , B60C2011/0353
摘要： A pneumatic tire (10) is formed to include a tread portion (11). The pneumatic tire (10) includes a carcass (15), an inclined belt (16), and a circumferential belt (17). The inclined belt (16) is formed by one or more inclined belt layers (16a, 16b) including cords inclined relative to the tire circumferential direction. A circumferential main groove (14) is provided in the tread portion (11). The inclined belt (16) includes a high-angle inclined belt layer (16a) in which the cords are at an inclination angle of 35° or more to 90° or less relative to the tire circumferential direction. In at least one tread half portion, an edge of the high-angle inclined belt layer (16a) in the tire width direction is positioned further outward in the tire width direction than the circumferential main groove (14) disposed furthest outward in the tire width direction. The interval in the tire width direction from the edge to the center of the circumferential main groove (14) is 0.2W 1 or more to 0.35W 1 or less, where W 1 is the width of the high-angle inclined belt layer (16a) in the tire width direction.
摘要翻译：充气轮胎（10）形成为包括胎面部（11）。充气轮胎（10）包括胎体（15），倾斜带（16）和周向带（17）。倾斜带（16）由包括相对于轮胎周向倾斜的帘线的一个或多个倾斜带束层（16a，16b）形成。在胎面部（11）设有周向主槽（14）。倾斜带（16）具有相对于轮胎周向的倾斜角度为35°以上且90°以下的高角度倾斜带束层（16a）。在至少一个胎面半部中，高角度倾斜带束层（16a）的轮胎宽度方向上的边缘位于比在轮胎宽度最外侧设置的周向主槽（14）更靠轮胎宽度方向外侧方向。从周向主槽（14）的边缘到中心的轮胎宽度方向上的间隔为0.2W1以上且0.35W1以下，其中，W1是高角度倾斜带束层（16a）的宽度轮胎宽度方向。

6. 发明公开

EP2738015A1 PNEUMATIC RADIAL TIRE FOR PASSENGER VEHICLE AND METHOD FOR USING SAME 审中-公开
标题翻译：的乘用车用子午线轮胎以及其使用方法
公开(公告)号：EP2738015A1
公开(公告)日：2014-06-04
申请号：EP12817199.8
申请日：2012-07-27
申请人： Bridgestone Corporation
发明人： HATANAKA, Shintaro , MATSUMOTO, Hiroyuki , KUWAYAMA, Isao , WATANABE, Jun , HIURA, Shingo
IPC分类号： B60C3/04 , B60C11/03
CPC分类号： B60C3/00 , B60C3/04 , B60C9/28 , B60C11/03 , B60C11/033 , B60C2011/0033 , B60C2011/0355 , Y02T10/862
摘要： Provided is a pneumatic radial tire for a passenger vehicle, having a carcass constituted of plies as radially-disposed cords and toroidally provided across a pair of bead portions, and including: a belt constituted of one or more belt layers; and a tread, which are disposed in this order on the outside in the radial direction of the carcass, in which: a section width SW and an outer diameter OD of the tire have a ratio of SW/OD≤0.26 when SW

7. 发明授权

EP3064373B1 PNEUMATIC TIRE 有权
公开(公告)号：EP3064373B1
公开(公告)日：2019-04-10
申请号：EP14857635.8
申请日：2014-07-01
申请人： Bridgestone Corporation
发明人： HATANAKA, Shintaro , KUWAYAMA, Isao
IPC分类号： B60C9/22 , B60C9/20 , B60C9/28 , B60C11/02 , B60C15/00

8. 发明授权

EP3115227B1 PNEUMATIC TIRE 有权
公开(公告)号：EP3115227B1
公开(公告)日：2019-02-20
申请号：EP15776203.0
申请日：2015-04-08
申请人： Bridgestone Corporation
发明人： KUWAYAMA, Isao , HATANAKA, Shintaro , KOZUKI, Kentaro
IPC分类号： B60C5/14 , B60C9/06 , B60C19/00

9. 发明授权

EP3202596B1 RUN-FLAT TIRE 有权
公开(公告)号：EP3202596B1
公开(公告)日：2018-10-10
申请号：EP15847158.1
申请日：2015-08-21
申请人： Bridgestone Corporation
发明人： HATANAKA, Shintaro , KUWAYAMA, Isao
IPC分类号： B60C17/00 , B60C3/04 , B60C15/06 , B60C9/28 , B60C11/03
CPC分类号： B60C17/0009 , B60C3/04 , B60C9/28 , B60C2011/0341 , B60C2011/0353 , B60C2015/061 , B60C2017/0054 , B60C2017/0072
摘要： The run-flat tire of this disclosure includes a tread portion, a pair of sidewall portions, bead portions, side reinforcing rubbers with crescent-like cross section, and a carcass formed of plies of radially arranged cords, wherein: when the tire is mounted to a rim, and an internal pressure of 250 kPa or more is applied to the tire, in a case where a sectional width SW of the tire is less than 165 mm, a ratio of the sectional width SW to an outer diameter OD of the tire, SW/OD, is 0.26 or less; in a case where the sectional width SW of the tire is 165 mm or more, the sectional width SW and the outer diameter OD of the tire satisfy a relation expression OD‰¥2.135×SW+282.3 (mm); and the relation expression 0.5‰¤WG/WB‰¤0.8 is satisfied.

10. 发明公开

EP3305557A1 PNEUMATIC TIRE 有权
标题翻译：充气轮胎
公开(公告)号：EP3305557A1
公开(公告)日：2018-04-11
申请号：EP16799511.7
申请日：2016-04-14
申请人： Bridgestone Corporation
发明人： HATANAKA, Shintaro
IPC分类号： B60C11/12 , B60C11/03
CPC分类号： B60C11/04 , B60C11/03 , B60C11/12 , B60C11/1259 , B60C2011/0341 , B60C2011/0355 , B60C2011/0386 , B60C2011/0388 , B60C2011/1227 , B60C2011/1254
摘要： Provided is a pneumatic tire that improves tire circumferential rigidity of a land portion in a tread portion and that also improves wet performance. The pneumatic tire includes, on a tread surface, at least two circumferential main grooves and at least one rib-like land portion defined by two of the circumferential main grooves. The rib-like land portion includes neither grooves nor sipes that extend to include a widthwise center line of the rib-like land portion. The rib-like land portion includes a one-end-open sipe and a both-end-closed sipe, the one-end-open sipe having one end open to one of the circumferential main grooves and another end closed within the rib-like land portion, and the both-end-closed sipe being arranged in the rib-like land portion. The one-end-open sipe has a widthwise sipe portion and a circumferential sipe portion, the widthwise sipe portion extending in tire width direction from one end of the one-end-open sipe and being terminated within the rib-like land portion, and the circumferential sipe portion being located closer to the widthwise center line than the both-end-closed sipe, extending in tire circumferential direction from the widthwise sipe portion, and being terminated at another end of the one-end-open sipe.
摘要翻译：本发明提供提高胎面部的接地部的轮胎周向刚性并提高湿路性能的充气轮胎。充气轮胎在胎面表面上包括至少两个周向主槽和由两个周向主槽限定的至少一个肋状陆部。肋状陆部既不包括凹槽也不包括延伸成包括肋状陆部的宽度方向中心线的沟槽。肋状陆部包括一端开放刀槽花纹和两端封闭刀槽花纹，一端开放刀槽花纹的一端向周向主槽中的一个开口，另一端封闭在肋状内并且两端封闭的刀槽花纹布置在肋状陆部中。所述一端开放刀槽花纹具有宽度方向刀槽花纹部和周向刀槽花纹部，所述宽度方向刀槽花纹部从所述一端开放刀槽花纹的一端沿轮胎宽度方向延伸并终止于所述肋状陆部内，以及所述周向刀槽花纹部分比所述两端封闭式刀槽花纹更靠近所述宽度方向中心线，所述周向刀槽花纹部分从所述宽度方向刀槽花纹部分沿轮胎周向延伸，并终止于所述一端开放式刀槽花纹的另一端。

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