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公开(公告)号：US11890898B2
公开(公告)日：2024-02-06
申请号：US17283173
申请日：2019-10-10
Applicant: The Yokohama Rubber Co., LTD.
Inventor： Ryohei Takemori
CPC classification number: B60C17/0009 , B60C15/0036 , B60C15/0603 , B60C2009/2016 , B60C2009/2019 , B60C2015/061 , B60C2015/0621 , B60C2017/0054 , B60C2017/0063 , B60C2017/0072
Abstract: A pneumatic tire is provided. A bead filler is disposed on an outer circumferential side of each bead core in bead portions, a side reinforcing layer having a crescent-shaped cross-section is disposed on an inner side in a tire width direction of a carcass layer in a sidewall portion, and as physical properties of a rubber that constitutes the side reinforcing layer and a rubber that constitutes the bead filler, a modulus at 100% elongation is in a range from 8.4 MPa to 10.2 MPa, a tan δ at 60° C. is in a range from 0.04 to 0.08, and JIS hardness at 20° C. is in the range from 75 to 79.
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公开(公告)号：US11794529B2
公开(公告)日：2023-10-24
申请号：US16470163
申请日：2017-10-31
Applicant: The Yokohama Rubber Co., LTD.
Inventor： Norifumi Kameda
CPC classification number: B60C15/0607 , B60C15/0603 , B60C17/0009 , B60C2015/061 , B60C2015/0621 , B60C2017/0054 , B60C2017/0063 , B60C2017/0072 , Y10T152/10837 , Y10T152/10846
Abstract: A run-flat tire includes side reinforcing rubber between a carcass layer and an innerliner layer in sidewall portions, first bead filler rubber arranged inside folded back portions of the carcass layer, and second bead filler rubber arranged outward of the folded back portions of the carcass layer in a lateral direction and along the carcass layer. In a meridian cross-section, a radial-direction height of the first bead filler rubber is 15% or greater and 40% or less of a cross-sectional height, a radial-direction height of the second bead filler rubber is 35% or greater and 55% or less of the cross-sectional height, a linear distance from a radial-direction outer end to a radial-direction inner end of the second bead filler rubber is 20% or greater and 45% or less of the cross-sectional height, and the second bead filler rubber has a larger cross-sectional area than the first bead filler rubber.
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33.发明申请公开(公告)号：US20190248184A1
公开(公告)日：2019-08-15
申请号：US16333332
申请日：2017-09-15
Inventor： JÉRÉMY GUILLAUMAIN , GUILLAUME ANDRE , SOLENNE VALLET , JULIEN VENUAT
CPC classification number: B60C9/005 , B60C3/04 , B60C9/0042 , B60C17/0009 , B60C2009/0078 , B60C2009/0092 , B60C2009/0425 , B60C2009/0433 , B60C2009/0441 , B60C2009/0466 , B60C2009/0475 , B60C2013/007 , B60C2017/0072 , D02G3/02 , D02G3/26 , D02G3/48 , D10B2331/021 , D10B2331/04 , D10B2505/022
Abstract: The reinforcing element (45) comprises an assembly (49) made up: of a multifilament strand made of aromatic polyamide or aromatic copolyamide (46) and of a multifilament strand made of polyester (48). The two strands (46, 48) are wound in a helix around one another, and the reinforcing element (45) is twist-balanced. The twist factor K of the reinforcing element (45) ranges from 5.5 to 6.5 where K is defined by the formula: K=(R×Ti1/2)/957 in which R is the twist of the reinforcing element (45) expressed in twists per metre and Ti is the sum of the counts of the multifilament strands of the reinforcing element (45) in tex.
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公开(公告)号：US20180244113A1
公开(公告)日：2018-08-30
申请号：US15889541
申请日：2018-02-06
Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
Inventor： Hiroaki KAJITA
CPC classification number: B60C17/0009 , B29D30/72 , B29D2030/724 , B60C15/0018 , B60C15/05 , B60C15/0603 , B60C17/0018 , B60C17/0027 , B60C2017/0063 , B60C2017/0072
Abstract: A side reinforcing rubber layer includes a second rubber portion having a modulus constant between a boundary surface and a bead portion and larger than a first rubber portion arranged on a tread-portion-2 side. The boundary surface intersects outer and inner surfaces of the side reinforcing rubber layer at first and third points, respectively. The first and third points are arranged on the bead-portion side of second and fourth points, respectively, which are closest points to an outer end of a belt layer of the outer and inner surfaces, respectively. A distance between an inner end of the first rubber portion and the second point is larger than a distance between the second point and the first point.
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公开(公告)号：US20180170121A1
公开(公告)日：2018-06-21
申请号：US15127772
申请日：2015-12-24
Applicant: Hiraku Kouda
Inventor： Hiraku Kouda
CPC classification number: B60C17/0009 , B60C1/0041 , B60C9/0042 , B60C9/0238 , B60C9/0292 , B60C13/003 , B60C2009/0246 , B60C2017/0072
Abstract: A pneumatic tire includes a reinforcing rubber layer disposed in the sidewall portions, the reinforcing rubber layer having a crescent-like meridian cross-section. When the tire is assembled on a regular rim and in an unloaded state with an internal pressure of 0 kPa, a radius of curvature (RP) is smaller than a radius of curvature (RO), an arc of the radius of curvature (RP) joining an intersection (Pa) of a carcass layer and a straight line (La), an intersection (Pb) of the carcass layer and a straight line (Lb), and an intersection (Pc) of the carcass layer and a straight line (Lc), and an arc of the radius of curvature (RO) joining an intersection (Oa) of the straight line (La) and a tire external contour, an intersection (Ob) of the straight line (Lb) and the tire external contour, and an intersection (Oc) of the straight line (Lc) and the tire external contour.
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Patent Agency Ranking
公开(公告)号：US20170225523A1
公开(公告)日：2017-08-10
申请号：US15423971
申请日：2017-02-03
Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
Inventor： Atsushi KAMIGORI
IPC: B60C17/00
CPC classification number: B60C17/0036 , B60C17/0009 , B60C17/0018 , B60C2013/006 , B60C2013/007 , B60C2017/0054 , B60C2017/0063 , B60C2017/0072
Abstract: In a tire 2, load support layers 20 extend, in portions inward of a carcass 10, from portions inward of beads 8, respectively, in the axial direction to portions inward of a tread in the radial direction. When a reference point P represents a point, on an outer surface of the tire 2, which is distant from a bead base line by 25 mm in the radial direction, a distance D1, at the reference point P, from the outer surface of the tire 2 to an outer side surface of a main portion 36 of a carcass ply 34 is greater than or equal to 3 mm and not greater than 10 mm.
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公开(公告)号：US20160263948A1
公开(公告)日：2016-09-15
申请号：US15032637
申请日：2014-06-02
Applicant: BRIDGESTONE CORPORATION
Inventor： Gaku OGAWA
CPC classification number: B60C17/0036 , B60C9/0042 , B60C9/08 , B60C9/20 , B60C9/2009 , B60C9/28 , B60C15/00 , B60C17/0009 , B60C2009/0035 , B60C2009/2016 , B60C2009/2219 , B60C2017/0072
Abstract: A run-flat radial tire includes: a carcass spanning between a pair of bead portions; a side reinforcement layer disposed at tire side portions; and a reinforcement cord layer that is disposed at a tire radial direction outside of the carcass, that comprises cord inclined to a tire circumferential direction at an angle of inclination of from 60 degrees to 90 degrees, and that is disposed such that, when the side reinforcement layer is projected along a tire radial direction, the reinforcement cord layer overlaps with a projected length of the side reinforcement layer in a region of 6% of a tread width of a tread portion, or greater.
Abstract translation: 扁平的子午线轮胎包括：跨越一对胎圈部分之间的胎体; 设置在轮胎侧部的侧面加强层; 以及加强帘线层，其设置在所述胎体的轮胎径向外侧，所述加强帘线层包括以60度〜90度的倾斜角度倾斜于轮胎周向的绳索，并且被配置为使得当所述侧面 加强层沿着轮胎径向突出，加强帘线层与胎面部的胎面宽度的6％以上的区域与侧面加强层的突出长度重叠。
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公开(公告)号：US09242515B2
公开(公告)日：2016-01-26
申请号：US13760136
申请日：2013-02-06
Applicant: The Yokohama Rubber Co., LTD.
Inventor： Keisuke Nakazaki
CPC classification number: B60C17/00 , B60C3/04 , B60C9/28 , B60C11/0083 , B60C13/003 , B60C17/0009 , B60C2015/061 , B60C2017/0072 , Y02T10/862
Abstract: A pneumatic tire has a belt cross-sectional width BW as a total width in a tire width direction of a belt layer and a distance Wl as a distance in the tire width direction from an edge on the tread portion side of a run flat liner to an edge of the belt layer. The belt cross-sectional width BW and the distance Wl are such that 0.25≦Wl/(BW/2)≦0.45 is satisfied. A thickness Wr in each of the side wall portions of the pneumatic tire is a thickness in the tire width direction of the run flat liner at a maximum width position, a thickness Ws is a thickness in the tire width direction of a rubber layer at the maximum width position, and the thickness Wr and the thickness Ws are such that 1.2≦Wr/Ws≦1.9 is satisfied.
Abstract translation: 充气轮胎具有作为带束层的轮胎宽度方向的总宽度的带横截面宽度BW和从跑式平坦衬里的胎面部侧的边缘到轮胎宽度方向上距离的距离W1 皮带层的边缘。 带横截面宽度BW和距离W1使得满足0.25＆nlE; Wl /（BW / 2）＆nlE; 0.45。 充气轮胎的每个侧壁部分中的厚度Wr是在最大宽度位置处的跑式平板衬套的轮胎宽度方向上的厚度，厚度Ws是橡胶层的轮胎宽度方向上的厚度 最大宽度位置，并且厚度Wr和厚度Ws使得满足1.2＆nlE; Wr / Ws＆nlE; 1.9。
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公开(公告)号：US09102201B2
公开(公告)日：2015-08-11
申请号：US13906388
申请日：2013-05-31
Applicant: SUMITOMO RUBBER INDUSTRIES, LTD.
Inventor： Naoki Yukawa
CPC classification number: B60C17/0009 , B60C2015/061 , B60C2017/0063 , B60C2017/0072 , Y02T10/862
Abstract: A run-flat tire with an aspect ratio of 50% to 60%, which comprises a carcass consisting of a single ply of cords extending between bead cores through a tread portion and sidewall portions, a pair of sidewall reinforcing layers each with a crescent cross-sectional shape and disposed axially inwardly of the carcass in each sidewall portion, the sidewall reinforcing layers made of rubber having a complex elastic modulus of from 6 to 12 MPa, and a pair of bead apex elements which extending radially outwardly of the tire from bead cores, each bead apex element having a height of from 0.30 to 0.48 times a tire section height from a bead base-line, wherein the tire has certain relations with respect to thicknesses of sidewall reinforcing layers and sidewall rubber elements.
Abstract translation: 一种纵横比为50％至60％的耐气候轮胎，其包括由胎冠芯通过胎面部分和侧壁部分延伸的单层绳索组成的胎体，一对侧壁增强层，每个侧壁增强层均具有新月形十字形 并且在每个侧壁部分中轴向向内设置胎体，由具有6至12MPa的复弹性模量的橡胶制成的侧壁增强层以及从胎圈径向向外延伸的一对胎圈三角形元件 芯部，每个胎圈三角形元件具有从胎圈基线的轮胎截面高度的0.30至0.48倍的高度，其中轮胎相对于侧壁增强层和侧壁橡胶元件的厚度具有一定关系。
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公开(公告)号：US08905101B2
公开(公告)日：2014-12-09
申请号：US13298201
申请日：2011-11-16
Applicant: Kenji Horiuchi
Inventor： Kenji Horiuchi
CPC classification number: B60C17/0009 , B60C3/04 , B60C15/0607 , B60C2009/2252 , B60C2013/006 , B60C2013/007 , B60C2017/0063 , B60C2017/0072 , Y10T152/10819 , Y10T152/10837
Abstract: A run flat tire where: the ratio of the cross-sectional height on the inner side in the radial direction to the cross-sectional height on the outer side in the radial direction, having the maximum tire width in a state inflated to an air pressure as a boundary; the inclination angle of the outer wall in the upper region of the side wall portion; the curving form of the tread surface; the position of the carcass folded over end; the height of the bead filler; the relationship between the thickness of the outer side rubber taken on a line normal to the rim line and the maximum thickness of the outer side rubber in an upper region of the bead portion; and the relationship of the thickness of the inner side rubber and the thickness of the outer side rubber taken on a line normal to the rim line are stipulated.
Abstract translation: 一种低压轮胎，其特征在于：径向内侧的横截面高度与径向外侧的横截面高度的比例，其具有膨胀至空气压力的状态下的最大轮胎宽度 作为边界; 侧壁部分的上部区域中的外壁的倾斜角度; 胎面表面的弯曲形式; 胴体折叠的位置; 珠填料的高度; 在胎圈部的上部区域中，与在边缘线垂直的线上取得的外侧橡胶的厚度与外侧橡胶的最大厚度之间的关系; 并且规定内侧橡胶的厚度与外侧橡胶的厚度在与轮辋线垂直的线上取下的关系。
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