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1. 发明申请

US20200055338A1 TWO-WHEEL VEHICLE TIRE 审中-公开
公开(公告)号：US20200055338A1
公开(公告)日：2020-02-20
申请号：US16609783
申请日：2018-05-01
申请人： BRIDGESTONE CORPORATION
发明人： Yukari MIYAMOTO
IPC分类号： B60C1/00 , B60C11/01
摘要： An object of the present invention is to provide a tire for two-wheel vehicle in which both the wet grip performance and the abrasion resistance of the tread are made compatible with each other. The tire for two-wheel vehicle of the present invention includes a pair of bead sections, a pair of side wall sections, and a tread section continuing to the both sidewall sections, the tread section being divided into three by a center section including a tire equatorial plane and a pair of shoulder sections including a tread end in the tire width direction, wherein a tread rubber of the center section and a tread rubber of the shoulder sections each contain a rubber component and satisfy the following formula (1): (Peak temperature of loss tangent tan δ of tread rubber of the center section)

2. 发明申请

US20190202236A1 TIRE FOR TWO-WHEEL VEHICLES 审中-公开
公开(公告)号：US20190202236A1
公开(公告)日：2019-07-04
申请号：US16302801
申请日：2017-05-24
申请人： BRIDGESTONE CORPORATION
发明人： Yukari MIYAMOTO
IPC分类号： B60C1/00 , B60C11/00 , C08C19/25 , C08L9/06
CPC分类号： B60C1/0016 , B60C1/00 , B60C11/00 , B60C11/0008 , B60C11/0058 , B60C2011/0025 , B60C2200/10 , C08C19/25 , C08K3/36 , C08L9/06 , C08L15/00
摘要： There are provided a tire for two-wheel vehicles that comprises a pair of bead sections, a pair of side wall sections, and a tread section continuing to both sidewall sections, wherein the tread section is divided into three by the center section and the shoulder sections, both the tread rubber of the center section and the tread rubber of the shoulder sections comprise a rubber component comprising a styrene-butadiene rubber and a modified conjugated diene polymer and silica, and the tread rubber includes 40 to 120 parts by mass of a filler based on 100 parts by mass of the rubber component, the silica content in the filler is 80% by mass or more. The tire for two-wheel vehicles are achieved compatible the wet grip performance and the abrasion resistance in a tread.

3. 发明申请

US20210213784A1 TIRE FOR TWO-WHEEL VEHICLE 有权
公开(公告)号：US20210213784A1
公开(公告)日：2021-07-15
申请号：US16771964
申请日：2018-12-11
申请人： BRIDGESTONE CORPORATION
发明人： Yukari MIYAMOTO
IPC分类号： B60C11/00
摘要： To provide a tire for a two-wheel vehicle in which wear resistance performance, dry gripping performance, and wet gripping performance are highly balanced. A tire for a two-wheel vehicle including a pair of bead portions, a pair of sidewall portions, and a tread portion continuous with the both sidewall portions, with the tread portion being divided into five portions in a surface of the tread portion by a central portion including a tire equatorial plane, a pair of edge portions including respective tread edges, and a pair of shoulder portions lying between the central portion and the respective edge portions in a tire width direction, wherein each of rubber of the central portion, rubber of the shoulder portions, and rubber of the edge portions contains a rubber component, and when a peak temperature of a loss tangent tan δ of the central portion is represented by Tp-C, a peak temperature of a loss tangent tan δ of the shoulder portions is represented by Tp-S, and a peak temperature of a loss tangent tan δ of the edge portions is represented by Tp-E, Tp-C, Tp-S, and Tp-E satisfy the formula (1): Tp-S>Tp-E>Tp-C.

4. 发明申请

US20200055337A1 TIRE FOR TWO-WHEELED VEHICLE 审中-公开
公开(公告)号：US20200055337A1
公开(公告)日：2020-02-20
申请号：US16609286
申请日：2018-05-01
申请人： BRIDGESTONE CORPORATION
发明人： Yukari MIYAMOTO
IPC分类号： B60C1/00 , B60C11/01
摘要： The tire for two-wheel vehicles of the present invention includes a pair of bead sections, a pair of side wall sections, and a tread section continuing to both the side wall sections, the tread section being divided into three by a center section and shoulder sections, wherein a tread rubber of the center section and a tread rubber of the shoulder sections each contain a rubber component and satisfy formula (1) shown below. The tire for two-wheel vehicles of the present invention achieves both wet grip performance and abrasion resistance of the tread. (Dynamic modulus E′ at 0° C. of tread rubber of center section)/(Dynamic modulus E′ at 0° C. of tread rubber of shoulder sections)

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