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公开(公告)号：US20240198734A1
公开(公告)日：2024-06-20
申请号：US18286517
申请日：2022-04-04
发明人： GAEL ROTY , SOPHIE GANDER
CPC分类号： B60C15/0603 , B60C2001/0058 , B60C2015/061 , B60C2200/04
摘要： A tire (1) for a passenger vehicle exhibits improved performance in terms of rolling resistance without adversely affecting the transverse cornering stiffness. The bead (50) is made more flexible by the use of low-hysteresis materials. The transverse cornering stiffness is increased by managing the contact between the bead (50) and the mounting rim (100). In a first section located in the contact patch, in at least a first bead, the length of the rim contact curve, LADC, is measured. In a second section located opposite the contact patch in relation to the axis of rotation of the tire, in at least a second bead, the length of the rim contact curve, LCJ, is measured. The ratio of the difference in the lengths of the rim contact curves in the two sections, i.e. 100*(LADC−LCJ)/LCJ, is greater than or equal to 30.
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公开(公告)号：US12011957B2
公开(公告)日：2024-06-18
申请号：US17213863
申请日：2021-03-26
发明人： Tetsuya Yamamoto
CPC分类号： B60C9/0292 , B60C3/00 , B60C15/0607 , B60C15/0018 , B60C15/0036 , B60C2015/061 , B60C2015/0621 , Y10T152/10837
摘要： A pneumatic tire includes a tread portion, a pair of sidewall portions, a pair of bead cores, a carcass layer, a pair of first bead apex rubber components, and a belt layer disposed outward of the carcass layer. In an unloaded condition where the tire is mounted onto a standard rim and inflated with an internal pressure at 50 kPa, the carcass layer has a profile that includes an outer side portion extending from a position (A) where the carcass layer separates from the belt layer to a maximum width position (B) of the carcass layer, and the pair of outer side portion is located outside a virtual arc (C0) having a single radius (R0) of curvature passing through the position (A), the maximum width position (B), and an outermost ends in the tire radial direction of one of the pair of first bead apex rubber components.
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公开(公告)号：US20230302850A1
公开(公告)日：2023-09-28
申请号：US18124635
申请日：2023-03-22
发明人： Tadashi ITO , Tetsuya KITANO
CPC分类号： B60C3/04 , B60C15/0607 , B60C2015/061 , B29D30/0601
摘要： A contour CL of a carcass 12 includes a curved portion 44 and an inversely curved portion 46. A boundary between the curved portion 44 and the inversely curved portion 46 is an inflection point PV. A part or an entirety of the curved portion 44 is represented by a first arc. A part or an entirety of the inversely curved portion 46 is represented by a second arc. The first arc and the second arc are tangent to each other at the inflection point PV. A ratio (X/W) of a distance X in an axial direction to a distance W in the axial direction is not less than 70% and not greater than 85%. A ratio (Y/H) of a distance Y in a radial direction to a distance H in the radial direction is not less than 15% and not greater than 22%.
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公开(公告)号：US20230256779A1
公开(公告)日：2023-08-17
申请号：US18156121
申请日：2023-01-18
发明人： Shingo NOBUKUNI
IPC分类号： B60C15/06
CPC分类号： B60C15/0607 , B60C2015/061
摘要： Provided is a tire 2 that can achieve reduction of rolling resistance while reducing a decrease in durability to be small. An apex 32 of each bead 10 includes an apex body 48, a strip apex 50, and an intermediate apex 52. An inner end of the strip apex 50 is located between a ply body 38a of a carcass ply 38 and the apex body 48. An inner end of the intermediate apex 52 is located between the strip apex 50 and the apex body 48. An outer end of the apex body 48 is located between the inner and outer ends of the intermediate apex 52. The intermediate apex 52 is located between the inner and outer ends of the strip apex 50. The intermediate apex 52 is harder than the apex body 48, and the strip apex 50 is harder than the intermediate apex 52.
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公开(公告)号：US20180236822A1
公开(公告)日：2018-08-23
申请号：US15846948
申请日：2017-12-19
发明人： Masafumi OTANI
CPC分类号： B60C13/00 , B60C13/04 , B60C15/06 , B60C15/0603 , B60C2013/006 , B60C2015/061 , B60C2200/10
摘要： In a tire 2, each of sidewalls 6 includes a first layer 36 disposed axially outward of a corresponding one of beads 8, and a second layer 38 extending outward from the first layer 36 in a radial direction. When Pc represents a position of an axially outer end of an interface between a carcass 10 and the sidewall 6, an outer end 40 of the first layer 36 is disposed radially inward of the position Pc. A hardness H1 of the first layer 36 is greater than a hardness H2 of the second layer 38. A ratio (H2/H1) of the hardness H2 to the hardness H1 is preferably not less than 0.70 and preferably not greater than 0.95.
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公开(公告)号：US20170326922A1
公开(公告)日：2017-11-16
申请号：US15525973
申请日：2015-10-21
CPC分类号： B60C15/0603 , B60C13/00 , B60C15/0081 , B60C15/06 , B60C15/0607 , B60C2015/009 , B60C2015/061 , B60C2015/0614 , B60C2015/0621 , B60C2015/0625
摘要： A tire includes a bead portion with a bead core having a main bead filler and an auxiliary bead filler, and a carcass ply wrapped around a portion of the main bead filler. An end of the carcass ply is located axially outside the main bead filler and radially below an apex of the main bead filler. The auxiliary bead filler is located axially outside the carcass ply end, with an apex of the auxiliary bead filler being located above an apex of the main bead filler.
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公开(公告)号：US20170136818A1
公开(公告)日：2017-05-18
申请号：US15319746
申请日：2015-06-12
发明人： Yuji Minami
CPC分类号： B60C3/04 , B60C9/0042 , B60C11/0083 , B60C17/0009 , B60C2009/0071 , B60C2013/007 , B60C2015/061
摘要： Provided is a pneumatic tire where a total width (SW) and an outer diameter (OD) satisfy the relationship SW/OD≦0.3; an inner diameter (ID) and an outer diameter (OD) satisfy the relationship ID/OD≧0.7; as viewed in a tire meridional cross section, an area (X1) (mm2) of a first region (R1) and a periphery length (Y1) (mm) of an inner peripheral surface of the first region (R1) have a ratio X1/Y1 of 12 or greater and 30 or less; and an area X2 (mm2) of a second region (R2) and a periphery length (Y2) (mm) of an inner peripheral surface of the second region (R2) have a ratio X2/Y2 of 10 or greater and 15 or less.
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公开(公告)号：US20170057301A1
公开(公告)日：2017-03-02
申请号：US15201760
申请日：2016-07-05
发明人： Keisuke HASHIMOTO , Eisuke HIROSUE
CPC分类号： B60C17/0009 , B60C15/0045 , B60C15/0603 , B60C15/0607 , B60C2015/061 , B60C2015/0614 , B60C2015/0617 , B60C2015/0621 , B60C2015/0639 , B60C2015/0642 , B60C2015/0682 , B60C2017/0063
摘要： In an apex 34 of a tire 2, a reinforcing portion 48 is located inward of a main body 46 in an axial direction. When a position on an outer surface of the tire 2 at which position a height from a BBL is 14 mm is defined as a first point P1 and a position on the outer surface of the tire 2 at which position a height from the BBL is 20 mm is defined as a second point P2, the reinforcing portion 48 overlaps the first point P1 and the second point P2 in a radial direction. A loss tangent of the reinforcing portion 48 is equal to a loss tangent of the main body 46 or less than the loss tangent. A hardness of the reinforcing portion 48 is equal to a hardness of the main body 46 or greater than the hardness.
摘要翻译： 在轮胎2的顶点34中，加强部48沿轴向位于主体46的内侧。 将轮胎2的与BBL的高度成为14mm的位置的位置定义为第一点P1，在距离BBL的高度为20°的轮胎2的外表面上的位置 mm被定义为第二点P2，加强部分48在径向上与第一点P1和第二点P2重叠。 加强部分48的损耗角正切相当于主体46的损耗角正切或小于损耗角正切。 加强部分48的硬度等于主体46的硬度或大于硬度。
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公开(公告)号：US20170008352A1
公开(公告)日：2017-01-12
申请号：US15116218
申请日：2015-01-13
发明人： Gaku OGAWA
IPC分类号： B60C17/00
CPC分类号： B60C17/0036 , B60C9/2009 , B60C9/28 , B60C17/0009 , B60C2009/2038 , B60C2013/007 , B60C2015/009 , B60C2015/061
摘要： A run flat radial tire having a tire cross-section height of 115 mm or greater includes a carcass spanning between a pair of bead portions, a side reinforcing rubber layer that is provided to a tire side portion and that extends in a tire radial direction along an inner face of the carcass, and at least one inclined belt layer provided at a tire radial direction outside of the carcass and includes cord extending in a direction inclined to a tire circumferential direction. At least at one end portion side in the tire axial direction of a maximum width inclined belt layer having the largest width in the tire axial direction, the maximum width inclined belt layer and the side reinforcing rubber layer have an overlap width in the tire axial direction of 15% or greater of the tire axial direction width of the maximum width inclined belt layer.
摘要翻译： 轮胎横截面高度为115mm以上的扁平子午线轮胎包括跨越一对胎圈部之间的胎体，设置在轮胎侧部并且沿轮胎径向延伸的侧面增强橡胶层 胎体的内表面，以及设置在胎体外侧的轮胎径向的至少一个倾斜带层，并且包括沿与轮胎周向倾斜的方向延伸的绳索。 至少在轮胎轴向宽度最大的最大宽度的倾斜带束层的轮胎轴向的一个端部侧，最大宽度的倾斜带层和侧面增强橡胶层在轮胎轴向上具有重叠宽度 为最大宽度的倾斜带层的轮胎轴向宽度的15％以上。
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公开(公告)号：US20160325591A1
公开(公告)日：2016-11-10
申请号：US15111816
申请日：2015-01-07
发明人： Gaku OGAWA
CPC分类号： B60C17/0009 , B60C9/02 , B60C11/00 , B60C15/0603 , B60C17/0027 , B60C2013/007 , B60C2015/009 , B60C2015/061 , B60C2017/0072
摘要： A run-flat tire includes a carcass, a tire side portion and a side reinforcement layer. The carcass bridges between a pair of bead portions. The tire side portion links between a bead portion and a tread portion. A carcass maximum width position of the tire side portion, at which the width of the carcass is at a maximum, is provided at the tire radial direction outer side relative to a position that is at 40% of the tire section height. The side reinforcement layer is provided at the tire width direction inner side of the carcass. A thickness of the side reinforcement layer at the position that is at 40% of the tire section height is not more than 65% of a thickness of the side reinforcement layer at the carcass maximum width position.
摘要翻译： 漏气保用轮胎包括胎体，轮胎侧部和侧部加强层。 胎体在一对胎圈部之间桥接。 轮胎侧部分在胎圈部分和胎面部分之间连接。 在胎体宽度最大的轮胎侧部的胎体最大宽度位置相对于轮胎胎面高度的40％的位置设置在轮胎径向外侧。 侧部加强层设置在胎体的轮胎宽度方向内侧。 处于轮胎截面高度的40％的位置处的侧面加强层的厚度不大于胎体最大宽度位置处侧面加强层的厚度的65％。
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