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    Pneumatic tire
    42.
    发明授权
    Pneumatic tire 有权

    公开(公告)号：US11554615B2

    公开(公告)日：2023-01-17

    申请号：US16768643

    申请日：2018-11-21

    Applicant: The Yokohama Rubber Co., LTD.

    Inventor： Atsushi Tanno ,  Hiraku Koda ,  Jun Matsuda

    IPC: B60C15/00 ,  B60C15/04 ,  B60C15/06

    Abstract: In a pneumatic tire, bead cores have a wire arrangement. In a cross-sectional view in a tire meridian direction, a tangential line and a contact point are defined. The tangential line contacts an innermost layer in a radial direction and the wire cross sections innermost and outermost in a lateral direction in the wire arrangement from a rim fitting surface side. The contact point of the tangent line is on the wire cross section on the outermost side. A gauge Wh in the lateral direction from the contact point to the rim fitting surface and an outer diameter φ of the bead wire have a relationship 2.0≤Wh/φ≤15.0. A radial height H2 of a contact portion between a body portion and a turned back portion of a carcass layer has a relationship 0.80≤H2/H1≤3.00 to a radial height H1 of the bead cores.

    Pneumatic tire
    43.
    发明授权
    Pneumatic tire 有权

    公开(公告)号：US11427038B2

    公开(公告)日：2022-08-30

    申请号：US15038021

    申请日：2014-11-21

    Applicant: The Yokohama Rubber Co., LTD.

    Inventor： Atsushi Tanno ,  Yousuke Sakamoto

    IPC: B60C19/00 ,  B60C1/00 ,  B60C5/00 ,  B60C9/02 ,  B60C9/18 ,  B60C11/03 ,  B60C13/00 ,  B60C15/00 ,  B32B5/18 ,  B32B7/12

    Abstract: A pneumatic tire of the present technology is a pneumatic tire provided with a tread portion, side wall portions and bead portions, a plurality of circumferential grooves extending in the tire circumferential direction being provided in the tread portion, and a belt-shaped sound-absorbing member being bonded via an adhesive layer to the tire inner surface in a region corresponding to the tread portion along the tire circumferential direction, wherein the width W of the sound-absorbing member is from 70% to 95% of the tire ground contact width TCW, and the total width of the circumferential grooves included in the region in the tire width direction in which the sound-absorbing member is disposed is from 25% to 40% of the width W of the sound-absorbing member.

    Pneumatic tire
    45.
    发明授权
    Pneumatic tire 有权

    公开(公告)号：US11260702B2

    公开(公告)日：2022-03-01

    申请号：US16768625

    申请日：2018-11-19

    Applicant: The Yokohama Rubber Co., LTD.

    Inventor： Yuki Sasaya ,  Masaaki Nagayasu ,  Ryohei Takemori ,  Atsushi Tanno ,  Hiraku Kouda ,  Jun Matsuda

    IPC: B60C15/024 ,  B60C15/04 ,  B60C17/00 ,  B60C9/08 ,  B60C15/00

    Abstract: In a cross-section of a pneumatic tire, a contour of the bead core is a polygon formed by tangent lines of circumferential portions of a bead wire, the contour includes a vertex with an acute angle and a bottom side opposite the vertex, the carcass layer is folded back along a circumference of the bead core in a bead portion, a folded back portion of the carcass layer from an outer end of the bead core extends in the radial direction, and a distance in the radial direction between a center of an arc profile of a tire outer surface and a straight line extending in the lateral direction through the vertex is within 20% of a radius r of the arc, and a distance in the lateral direction between the center of the arc and a straight line extending in the radial direction through the vertex is within 2r±0.4r.

    Pneumatic Tire
    48.
    发明申请
    Pneumatic Tire 审中-公开

    公开(公告)号：US20200376903A1

    公开(公告)日：2020-12-03

    申请号：US16770571

    申请日：2018-12-04

    Applicant: The Yokohama Rubber Co., LTD.

    Inventor： Hiraku Kouda ,  Jun Matsuda ,  Atsushi Tanno ,  Masaaki Nagayasu ,  Ryohei Takemori ,  Yuki Sasaya

    IPC: B60C15/04 ,  B60C15/06

    Abstract: In a pneumatic tire including a side reinforcing layer, the maximum width W0of a bead core and the widths W1, W2 of the bead core at innermost and outermost sides in the radial direction, respectively, satisfy W1>W2 and W2≤0.5×W0. W0 is toward the inside of the center of the bead core in the radial direction. A carcass is folded and curved along the bead core, and a folded back portion of the carcass extends toward the sidewalls while contacting a body of the carcass. A rubber occupancy ratio in a region formed by the body and the folded back portion of the carcass is 0.1% to 15%. The cross-sectional area S2 of a filler toward the outside of the carcass in the lateral direction, the hardness H2 of the filler, the cross-sectional area S1of a side reinforcing layer and the hardness H1 of the side reinforcing layer satisfy 0.15≤(S2×H2)/(S1×H1)≤0.60.

    Pneumatic tire
    49.
    发明授权
    Pneumatic tire 有权

    公开(公告)号：US10286737B2

    公开(公告)日：2019-05-14

    申请号：US15038331

    申请日：2014-11-21

    Applicant: The Yokohama Rubber Co., LTD.

    Inventor： Atsushi Tanno

    IPC: B60C19/00 ,  B60C23/04 ,  B60C13/00 ,  B60C15/00 ,  B60C11/00 ,  B60C1/00

    Abstract: A pneumatic tire of the present technology includes a tread portion, sidewall portions, bead portions, and a belt-shaped sound-absorbing member bonded to a region on a tire inner surface corresponding to the tread portion along the tire circumferential direction with an adhesive layer disposed between the tire inner surface and the sound-absorbing member. In such a pneumatic tire, an air agitation portion formed by an interruption in the sound-absorbing member is disposed in at least one location on the tire circumference.

    Pneumatic Tire
    50.
    发明申请
    Pneumatic Tire 审中-公开
    气动轮胎

    公开(公告)号：US20170008354A1

    公开(公告)日：2017-01-12

    申请号：US15113412

    申请日：2014-12-09

    Applicant: THE YOKOHAMA RUBBER CO., LTD.

    Inventor： Yousuke Sakamoto ,  Atsushi Tanno

    IPC: B60C19/00 ,  B60C11/03

    CPC classification number: B60C19/002 ,  B60C9/2204 ,  B60C11/0304 ,  B60C11/0306 ,  B60C2009/2228

    Abstract: The pneumatic tire of the present technology includes: a tread portion; sidewall portions; and bead portions. A pattern of grooves is formed on the tread portion, and a strip-shaped sound-absorbing member is bonded along the tire circumferential direction to a region of the tire inner surface corresponding to the tread portion via an adhesive layer. A first ground contact region is defined between the tire ground contact edge on one side in the tire width direction and the tire equatorial plane, and a second ground contact region is defined between the tire ground contact edge on the other side in the tire width direction and the tire equatorial plane. The sound-absorbing member is offset with respect to the tire width direction so that the centroid of a cross-section of the sound-absorbing member in a plane that includes a tire axis is located within the first ground contact region.

    Abstract translation: 本技术的充气轮胎包括：胎面部; 侧壁部分; 和胎圈部分。 在胎面部分上形成有凹槽的图形，并且沿着轮胎周向将条形吸音构件经由粘合层与轮胎内表面的与胎面部对应的区域接合。 在轮胎宽度方向上的一侧的轮胎接地边缘与轮胎赤道面之间限定第一接地区域，并且在轮胎宽度方向另一侧的轮胎接地边界之间限定第二接地区域 和轮胎赤道平面。 吸声构件相对于轮胎宽度方向偏移，使得在包括轮胎轴线的平面中的吸音构件的横截面的重心位于第一接地区域内。

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