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公开(公告)号:US20200156418A1
公开(公告)日:2020-05-21
申请号:US16478828
申请日:2018-01-11
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.
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公开(公告)号:US20180370295A1
公开(公告)日:2018-12-27
申请号:US16063634
申请日:2016-12-14
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.
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公开(公告)号:US20190241025A1
公开(公告)日:2019-08-08
申请号:US16345672
申请日:2017-10-24
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.
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公开(公告)号:US20230126372A1
公开(公告)日:2023-04-27
申请号:US18061768
申请日:2022-12-05
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.
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公开(公告)号:US11524525B2
公开(公告)日:2022-12-13
申请号:US17755572
申请日:2020-10-23
发明人: Koji Nishio
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.
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公开(公告)号:US11312190B2
公开(公告)日:2022-04-26
申请号:US16478828
申请日:2018-01-11
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.
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公开(公告)号:US11260704B2
公开(公告)日:2022-03-01
申请号:US16063634
申请日:2016-12-14
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.
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公开(公告)号:US11207929B2
公开(公告)日:2021-12-28
申请号:US16065035
申请日:2016-12-14
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.
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公开(公告)号:US20190054777A1
公开(公告)日:2019-02-21
申请号:US16065035
申请日:2016-12-14
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.
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