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公开(公告)号：US20170326921A1
公开(公告)日：2017-11-16
申请号：US15533849
申请日：2015-12-04
Inventor： Marc FRANCIA , Yves POTIN , Florian VILCOT , Stephane LE CAM
CPC classification number: B60C15/0054 , B60C9/0238 , B60C15/0018 , B60C15/0603 , B60C15/0635 , B60C2009/0246 , B60C2009/0253 , B60C2009/0276 , B60C2015/044 , B60C2015/0621
Abstract: Each of at least two layers of a carcass reinforcement has a breaking force per unit width higher than 2250 daN/dm. The minimum strength per unit width, measured for an elongation of less than 10%, of a second layer of carcass reinforcement is strictly greater than a value equal to 20% of the minimum strength per unit width, measured for an elongation of less than 10%, of a first layer of carcass reinforcement. The reinforcing elements of the two layers of carcass reinforcement have a thread count of less than 750 tex. The elongation of the reinforcing elements of the second layer of carcass reinforcement is greater than 4% under a force of 20 daN, and the secant elastic modulus values under tension at 10% elongation, Mt, Mj, satisfy the relationship Mt/Mj≧1.
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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：US20170305204A1
公开(公告)日：2017-10-26
申请号：US15517970
申请日：2015-07-01
Applicant: Continental Reifen Deutschland GmbH
Inventor： Julian De Riva-Perez , Peter Voelsen
CPC classification number: B60C15/0018 , B60C9/0207 , B60C9/0238 , B60C2009/0246 , B60C2009/0253 , B60C2009/0416 , B60C2009/0425 , B60C2009/0441
Abstract: Pneumatic vehicle tyre comprising a carcass (3), wherein the carcass (3) has two carcass plies (31, 32), wherein each carcass ply (31, 32) has reinforcements which are arranged inside the carcass ply (31, 32) substantially parallel to each other. The problem addressed by the invention is to provide a pneumatic vehicle tyre which likewise creates a high quality impression of sufficient robustness to a viewer and, in the process, is cheaper to produce and has a reduced rolling resistance. The invention is characterised in that the product EF1 of the average modulus of elasticity of the reinforcements, as measured with an extension of 2%, of the first carcass ply (31) and the thread density of the reinforcements of the first carcass ply (31), and the product EF2 of the average modulus of elasticity of the reinforcements of the second carcass ply (32) and the thread density of reinforcements of the second carcass ply (32), satisfy the relationship EF1>EF2.
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公开(公告)号：US20150144246A1
公开(公告)日：2015-05-28
申请号：US14406174
申请日：2013-07-26
Applicant: The Yokohama Rubber Co., LTD.
Inventor： Jun Matsuda , Yuji Satoh , Masayuki Watanabe , Hirokazu Shibata
CPC classification number: B60C9/14 , B60C1/0008 , B60C1/0041 , B60C15/0009 , B60C15/0045 , B60C2005/145 , B60C2009/0246
Abstract: A pneumatic tire is configured in such a manner that at least two carcass layers each have both end portions in the tire width direction extending to bead cores disposed in both bead portions, and the both end portions are wound up from the inner side in the tire width direction of the bead cores to the outer side in the tire width direction, and extend outward in the tire radial direction. In such a pneumatic tire, the carcass layers are formed by thermoplastic sheets, and a rubber layer is disposed at least between adjacent sheets of the thermoplastic sheets.
Abstract translation: 一种充气轮胎，其特征在于，至少两个胎体层的轮胎宽度方向上的两端部延伸到设置在两个胎圈部的胎圈芯，两端部从轮胎的内侧卷起 胎圈芯的宽度方向在轮胎宽度方向上的外侧，并且在轮胎径向向外延伸。 在这种充气轮胎中，胎体层由热塑性片材形成，橡胶层至少设置在相邻的热塑性片材片之间。
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公开(公告)号：US20130025761A1
公开(公告)日：2013-01-31
申请号：US13640983
申请日：2011-04-15
Applicant: Takuya Yoshimi
Inventor： Takuya Yoshimi
CPC classification number: B60C9/08 , B60C15/0027 , B60C17/0009 , B60C2009/0246 , B60C2009/0425 , B60C2009/0433 , B60C2009/0466 , B60C2009/0475 , B60C2015/009
Abstract: Provided is a pneumatic tire in which the driving stability is improved without compromising durability.Provided is a pneumatic tire composed of tread portions, a pair of side wall portions extending from side portions of the tread portions to inward in the tire radial direction, and bead portions connected to the inner end in the tire radial direction of the side wall portions, which are reinforced by a carcass composed of one or more carcass plies composed of cellulose fiber cord covered with a coating rubber. The tensile modulus of elasticity of the cellulose fiber cord under a stress load of 29.4N per cord at a temperature of 180° C. is 40 cN/dtex or higher, and all of the carcass cords are turned up around each bead core embedded at the pair of bead portions from the inside toward the outside of the tire.
Abstract translation: 提供一种充气轮胎，其中在不损害耐久性的情况下提高驾驶稳定性。 提供一种充气轮胎，其由胎面部，从胎面部的侧部向轮胎径向延伸的一对侧壁部和与侧壁部的轮胎径向的内端连接的胎圈部， ，其由由覆盖有涂层橡胶的纤维素纤维帘线构成的一个或多个胎体帘布层构成的胎体增强。 纤维素纤维帘线在温度为180℃的条件下在每条帘线29.4N的应力负荷下的拉伸弹性模量为40cN / dtex或更高，并且所有的胎体帘线都围绕埋在 一对胎圈部分从轮胎的内侧朝向外侧。
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公开(公告)号：US20180354306A1
公开(公告)日：2018-12-13
申请号：US15535908
申请日：2015-12-04
Inventor： Marc FRANCIA , Yves POTIN , Florian VILCOT
CPC classification number: B60C9/0238 , B60C15/0018 , B60C15/0054 , B60C15/0603 , B60C15/0635 , B60C2009/0246 , B60C2009/0253 , B60C2009/0276 , B60C2015/044 , B60C2015/0621
Abstract: The tire has a load index that is at least 118 and two layers of reinforcing elements. Each of the layers has a breaking force per unit width that is higher than 2900 daN/dm. A minimum strength per unit width, measured for an elongation of less than 10%, of the second layer is greater than 20% of the minimum strength per unit width, measured for an elongation of less than 10%, of the first layer. The reinforcing elements of the first layer have a thread count that is higher than 300 tex. The reinforcing elements of the two layers have a thread count of less than 750 tex. The elongation of the reinforcing elements of the second layer are greater than 8% under a force of 20 daN and the secant elastic modulus values under tension at 10% elongation, Mt, Mj, satisfy the relationship Mt/Mj≥1.
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公开(公告)号：US10017012B2
公开(公告)日：2018-07-10
申请号：US14406174
申请日：2013-07-26
Applicant: The Yokohama Rubber Co., LTD.
Inventor： Jun Matsuda , Yuji Satoh , Masayuki Watanabe , Hirokazu Shibata
CPC classification number: B60C9/14 , B60C1/0008 , B60C1/0041 , B60C15/0009 , B60C15/0045 , B60C2005/145 , B60C2009/0246
Abstract: A pneumatic tire is configured in such a manner that at least two carcass layers each have both end portions in the tire width direction extending to bead cores disposed in both bead portions, and the both end portions are wound up from the inner side in the tire width direction of the bead cores to the outer side in the tire width direction, and extend outward in the tire radial direction. In such a pneumatic tire, the carcass layers are formed by thermoplastic sheets, and a rubber layer is disposed at least between adjacent sheets of the thermoplastic sheets.
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