公开(公告)号：US20200156418A1

公开(公告)日：2020-05-21

申请号：US16478828

申请日：2018-01-11

申请人： The Yokohama Rubber Co., LTD.

发明人： Koji Nishio

IPC分类号： B60C15/04

摘要： This pneumatic tire includes bead cores formed by winding a bead wire. In a cross-sectional view of the bead core, the bead core has a wire array structure of a hexagon formed by winding the bead wires in a close-packed manner. The hexagon is a projecting hexagon with an obtuse internal angle at every vertex. A layer number M of wire cross sections in a Y-axis direction and a maximum value N_max of an array number N of the wire cross sections in an X-axis direction satisfy 0.75≤M/N_max≤1.30. A distance A in a lateral direction from a vertex of the hexagon on the innermost side in the lateral direction to the centroid of the hexagon, and a distance B in the lateral direction from a vertex of the hexagon on the outermost side in the lateral direction to the centroid of the hexagon, satisfy 1.05≤B/A.

公开(公告)号：US20180370295A1

公开(公告)日：2018-12-27

申请号：US16063634

申请日：2016-12-14

申请人： The Yokohama Rubber Co., LTD.

发明人： Koji Nishio

IPC分类号： B60C15/06

摘要： A pneumatic tire mountable on a 15° tapered specified rim includes a bead core, a carcass, a steel cord reinforcing layer, a bead rubber layer, an organic fiber reinforced layer, and a first reinforcing rubber layer. A distance from a second line segment to a third line segment is from 4 mm to 12 mm, a complex modulus of the first reinforcing rubber layer is from 6 MPa to 10 MPa, an elongation at break of the first reinforcing rubber layer is from 300% to 450%, and a difference between a first height and a second height is from 3 mm to 15 mm.

公开(公告)号：US20190241025A1

公开(公告)日：2019-08-08

申请号：US16345672

申请日：2017-10-24

申请人： The Yokohama Rubber Co., LTD.

发明人： Koji Nishio

IPC分类号： B60C15/024 ,  B60C15/04 ,  B60C15/06

CPC分类号： B60C15/024 ,  B60C15/04 ,  B60C15/06 ,  B60C15/0635 ,  B60C2015/046 ,  B60C2015/0678 ,  B60C2015/0692

摘要： With a pneumatic tire not mounted on a rim, in a meridian cross-section a first line is parallel with an innermost bottom side of a bead core in a radial direction and passes through an outermost projection of the bead core in a lateral direction, a second line is orthogonal with the first line at the outermost projection, a third line is orthogonal with the first line and passes through an intersection of a rim cushion rubber, a distance between the second and third lines is 2.0 to 4.0 mm, a shortest distance between an innermost projection of the bead core in the lateral direction and a cord of a carcass layer is 0.6 to 1.4 mm, and a shortest distance between an innermost end of the bottom side of the bead core in the lateral direction and the cord of the carcass layer is 1.2 to 2.2 mm.

公开(公告)号：US20230126372A1

公开(公告)日：2023-04-27

申请号：US18061768

申请日：2022-12-05

申请人： The Yokohama Rubber Co., LTD.

发明人： Koji Nishio

IPC分类号： B60C15/024 ,  B60C15/04 ,  B60C15/06 ,  B60C15/02

摘要： With a pneumatic tire not mounted on a rim, in a meridian cross-section a first line is parallel with an innermost bottom side of a bead core in a radial direction and passes through an outermost projection of the bead core in a lateral direction, a second line is orthogonal with the first line at the outermost projection, a third line is orthogonal with the first line and passes through an intersection of a rim cushion rubber, a distance between the second and third lines is 2.0 to 4.0 mm, a shortest distance between an innermost projection of the bead core in the lateral direction and a cord of a carcass layer is 0.6 to 1.4 mm, and a shortest distance between an innermost end of the bottom side of the bead core in the lateral direction and the cord of the carcass layer is 1.2 to 2.2 mm.

公开(公告)号：US11524525B2

公开(公告)日：2022-12-13

申请号：US17755572

申请日：2020-10-23

申请人： The Yokohama Rubber Co., LTD.

发明人： Koji Nishio

IPC分类号： B60C9/02 ,  B60C15/04

摘要： Provided is a pneumatic tire. A carcass line when 10% of a regular internal pressure is applied is composed of a curved line (S) connecting arcs having different radii of curvature and curved to project outward in a tire width direction and a curved line (T) curved to project inward in the tire width direction. A radius of curvature (Ri) at a point on the curved line (S) and a radius of curvature (Ri+1) at an adjacent point satisfy |Ri+1−Ri|/|(Ri+1+Ri)/2|≤0.25. An inclination (θS) and an inclination (θT) at a connection point (Q) of the curved line (S) and the curved line (T) satisfy |θS−θT|≤8°. A ratio (Hβ/Hα) between a radial height (Hα) at a maximum outer diameter position of a carcass layer and a radial height (Hβ) at a tire maximum width position satisfies Hβ/Hα ≥0.58.

公开(公告)号：US11312190B2

公开(公告)日：2022-04-26

申请号：US16478828

申请日：2018-01-11

申请人： The Yokohama Rubber Co., LTD.

发明人： Koji Nishio

IPC分类号： B60C15/04

摘要： This pneumatic tire includes bead cores formed by winding a bead wire. In a cross-sectional view of the bead core, the bead core has a wire array structure of a hexagon formed by winding the bead wires in a close-packed manner. The hexagon is a projecting hexagon with an obtuse internal angle at every vertex. A layer number M of wire cross sections in a Y-axis direction and a maximum value N_max of an array number N of the wire cross sections in an X-axis direction satisfy 0.75≤M/N_max≤1.30. A distance A in a lateral direction from a vertex of the hexagon on the innermost side in the lateral direction to the centroid of the hexagon, and a distance B in the lateral direction from a vertex of the hexagon on the outermost side in the lateral direction to the centroid of the hexagon, satisfy 1.05≤B/A.

公开(公告)号：US11260704B2

公开(公告)日：2022-03-01

申请号：US16063634

申请日：2016-12-14

申请人： The Yokohama Rubber Co., LTD.

发明人： Koji Nishio

IPC分类号： B60C15/06

摘要： A pneumatic tire mountable on a 15° tapered specified rim includes a bead core, a carcass, a steel cord reinforcing layer, a bead rubber layer, an organic fiber reinforced layer, and a first reinforcing rubber layer. A distance from a second line segment to a third line segment is from 4 mm to 12 mm, a complex modulus of the first reinforcing rubber layer is from 6 MPa to 10 MPa, an elongation at break of the first reinforcing rubber layer is from 300% to 450%, and a difference between a first height and a second height is from 3 mm to 15 mm.

公开(公告)号：US11207929B2

公开(公告)日：2021-12-28

申请号：US16065035

申请日：2016-12-14

申请人： The Yokohama Rubber Co., LTD.

发明人： Koji Nishio

IPC分类号： B60C15/00 ,  B60C15/06 ,  B60C15/02 ,  B60C1/00 ,  B60C15/024 ,  B60C15/04 ,  B60C3/04 ,  B60C17/00

摘要： A pneumatic tire mountable on a 15° tapered specified rim includes a bead core, a carcass, a steel cord reinforcing layer, a bead rubber layer, and a first reinforcing rubber layer. A distance from a second line segment to a third line segment is from 4 mm to 12 mm, a complex modulus of the first reinforcing rubber layer is from 6 MPa to 10 MPa, an elongation at break of the first reinforcing rubber layer is from 300% to 450%, a complex modulus of the second reinforcing rubber layer is from 10 MPa to 15 MPa, and a complex modulus of a shock absorbing rubber layer is from 2 MPa to 6 MPa.

公开(公告)号：US20190054777A1

公开(公告)日：2019-02-21

申请号：US16065035

申请日：2016-12-14

申请人： The Yokohama Rubber Co., LTD

发明人： Koji Nishio

IPC分类号： B60C15/02 ,  B60C15/06 ,  B60C15/00 ,  B60C15/024 ,  B60C1/00

摘要： A pneumatic tire mountable on a 15° tapered specified rim includes a bead core, a carcass, a steel cord reinforcing layer, a bead rubber layer, and a first reinforcing rubber layer. A distance from a second line segment to a third line segment is from 4 mm to 12 mm, a complex modulus of the first reinforcing rubber layer is from 6 MPa to 10 MPa, an elongation at break of the first reinforcing rubber layer is from 300% to 450%, a complex modulus of the second reinforcing rubber layer is from 10 MPa to 15 MPa, and a complex modulus of a shock absorbing rubber layer is from 2 MPa to 6 MPa.