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    Tire with improved tread
    1.
    发明授权
    Tire with improved tread 有权

    公开(公告)号：US10029516B2

    公开(公告)日：2018-07-24

    申请号：US15106822

    申请日：2014-12-04

    Applicant: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN ,  MICHELIN RECHERCHE ET TECHNIQUE S.A.

    Inventor： Frédéric Bourgeois ,  François-Xavier Bruneau ,  Patrice Fraysse ,  Emmanuel Igier

    IPC: B60C11/00 ,  B60C1/00 ,  B60C11/03

    Abstract: Tire comprising a tread which has at least one central rib (411-413) and two lateral ribs (421-422) which are separated by circumferential grooves (141-144), in which tire a first lateral rib (421) adjacent to the outer axial edge of the tread and at least one (and preferably each) of the central ribs have a first portion (4211, 4111, 4121, 4131) the axial width of which exceeds 2 % of the axial width of the relevant rib made and the depth of which is less than that of the relevant rib, from a rubber composition containing an elastomer and a reinforcing filler consisting predominantly of carbon black, and an axially adjacent second portion (4212, 4112, 4122, 4132) made of a rubber composition containing an elastomer and a reinforcing filler a minority proportion of which consists of carbon black, in which the rubber compositions that make up the second portion of the first lateral rib and the second portion of the central rib all have a tan 50 value which is higher than the tan 50 value of the rubber compositions that form the first portion of the first lateral rib and the first portion of the central rib, the tan 50 values being measured at a temperature of 0° C. and under a stress of 0.7 MPa.

    TIRE WITH IMPROVED BEADS
    2.
    发明申请
    TIRE WITH IMPROVED BEADS 有权
    轮胎与改进的珠子

    公开(公告)号：US20140360647A1

    公开(公告)日：2014-12-11

    申请号：US14361498

    申请日：2012-11-28

    Applicant: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN ,  MICHELIN RECHERCHE ET TECHNIQUE S.A.

    Inventor： Frédéric Bourgeois ,  François-Xavier Bruneau

    IPC: B60C15/06

    CPC classification number: B60C15/0628 ,  B60C1/0025 ,  B60C15/06 ,  B60C2015/009 ,  B60C2015/061 ,  B60C2015/0621 ,  B60C2015/065 ,  B60C2015/0678 ,  B60C2015/0682

    Abstract: Tire having two beads each comprising an annular reinforcing structure and a carcass reinforcement which is anchored in the two beads by being wrapped around the annular reinforcing structure so as to form, in each bead, a main portion and a wrapped-around portion, wherein each bead comprises an apex situated between the main portion and the wrapped-around portion of the carcass reinforcement, and an outer strip positioned axially on the outside of the carcass reinforcement and of the apex, the apex and the outer strip being made of a rubber compound that has an elastic modulus G′ less than or equal to 15 MPa and a viscous modulus G″ such that: G″ [MPa]≦0.2·G′ [MPa]−0.2 MPa, the elastic and viscous moduli being measured at 23° C.; wherein the entity formed by the apex and the outer strip has a thickness E(r), the thickness E(r) varying such that, in the range of distances r comprised between 25 and 45% of the height H of the tire, the variation in thickness ∂ E  ( r ) ∂ r is less than or equal to −0.25 mm/mm over at least 4% of the height H of the tire, that, in the range of distances r comprised between 15 and 35% of the height H, the variation in thickness ∂ E  ( r ) ∂ r is greater than or equal to 0.20 mm/mm over at least 2% of the height H of the tire, and that, in the range of distances r comprised between 10 and 20% of the height H of the tire, the variation in thickness ∂ E  ( r ) ∂ r is greater than or equal to −0.10 mm/mm and less than or equal to 0.0 mm/mm over at least 5% of the height H of the tire.

    Abstract translation: 轮胎具有两个胎圈，每个胎圈均包括环形加强结构，胎体加强件通过围绕环形加强结构缠绕在两个胎圈中，从而在每个胎圈中形成主体部分和卷绕部分， 胎圈包括位于胎体增强件的主要部分和缠绕部分之间的顶点，以及轴向位于胎体增强件的外侧和顶点的外条，顶点和外条由橡胶组合物制成 其弹性模量G'小于或等于15MPa，粘度模量G“使得：G”[MPa]＆nlE; 0.2·G'[MPa] -0.2MPa，弹性和粘度模量在23 C。; 其中由顶点和外条形成的实体具有厚度E（r），厚度E（r）变化，使得在距离r的范围内包括轮胎高度H的25％至45％之间， 在轮胎的高度H的至少4％的范围内，厚度的变化∂E（r）∂r小于或等于-0.25mm / mm，在距离r的范围内包括15至35％ 在轮胎的高度H的至少2％上，高度H，厚度变化∂E（r）∂r大于或等于0.20mm / mm，并且在距离r的范围内， 10％和20％的轮胎高度H，厚度的变化∂E（r）∂r大于或等于-0.10 mm / mm，小于或等于0.0 mm / mm至少5％ 的轮胎的高度H。

    TREAD WITH ARIABLE CHAMFERS
    3.
    发明申请
    TREAD WITH ARIABLE CHAMFERS 有权
    与有争议的角色

    公开(公告)号：US20140345764A1

    公开(公告)日：2014-11-27

    申请号：US14363625

    申请日：2012-11-27

    Applicant: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN ,  MICHELIN RECHERCHE ET TECHNIQUE S.A.

    Inventor： Frédéric Bourgeois ,  François-Xavier Bruneau

    IPC: B60C11/13 ,  B60C11/03

    CPC classification number: B60C11/1392 ,  B60C11/0302 ,  B60C11/0304 ,  B60C11/0306 ,  B60C11/0332 ,  B60C11/11 ,  B60C11/12 ,  B60C11/1384

    Abstract: Tread having a plurality of generally circumferentially orientated grooves delimiting a plurality of relief elements, this tread further comprising a plurality of cut-outs in the form of transversely orientated grooves and/or slits, each relief element comprising a contact face intended to come into contact with the road and lateral faces cutting this contact face along edges intended to come into contact with a road during running, this tread having chamfers on at least a plurality of transverse edges of the relief elements, this tread having, in straight-line running, a total contact surface S comprising a part Sc in which all the transverse edges have chamfers and a part Snc in which all the transverse edges are free of chamfers, this tread having, in a cornering manoeuvre corresponding to a transverse acceleration of 0.3 g (where g is the acceleration due to gravity), a total footprint surface S* formed by a part Sc* comprising chamfers on all the transverse edges of its relief elements and a part Snc* free of any chamfer, this tread being such that the ratio Snc/Sc is equal to not more than 2% and that the ratio Snc*/Sc* is equal to or greater than 10%.

    Abstract translation: 踏板具有限定多个凸出元件的多个大致周向定向的凹槽，该胎面还包括呈横向定向的凹槽和/或狭缝形式的多个切口，每个浮雕元件包括用于接触的接触面 道路和侧面在运行期间沿着旨在与道路接触的边缘切割该接触面，该胎面在减震元件的至少多个横向边缘上具有倒角，该胎面具有直线运行， 总接触表面S包括其中所有横向边缘都具有倒角的部分Sc和其中所有横向边缘都没有倒角的部分Snc，该胎面在对应于0.3g的横向加速度的转弯机动中（其中 g是由于重力引起的加速度），由其部分Sc *形成的总占地面积S *包括在其浮雕的所有横向边缘上的倒角 并且部分Snc *没有任何倒角，该胎面使得Snc / Sc的比率等于不大于2％，并且Snc * / Sc *的比率等于或大于10％。

    Tire with improved beads
    5.
    发明授权
    Tire with improved beads 有权
    轮胎改良珠

    公开(公告)号：US09499014B2

    公开(公告)日：2016-11-22

    申请号：US14361498

    申请日：2012-11-28

    Applicant: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN ,  MICHELIN RECHERCHE ET TECHNIQUE S.A.

    Inventor： Frédéric Bourgeois ,  François-Xavier Bruneau

    IPC: B60C15/00 ,  B60C15/06 ,  B60C1/00

    CPC classification number: B60C15/0628 ,  B60C1/0025 ,  B60C15/06 ,  B60C2015/009 ,  B60C2015/061 ,  B60C2015/0621 ,  B60C2015/065 ,  B60C2015/0678 ,  B60C2015/0682

    Abstract: Tire having two beads each comprising an annular reinforcing structure and a carcass reinforcement which is anchored in the two beads by being wrapped around the annular reinforcing structure so as to form, in each bead, a main portion and a wrapped-around portion, wherein each bead comprises an apex situated between the main portion and the wrapped-around portion of the carcass reinforcement, and an outer strip positioned axially on the outside of the carcass reinforcement and of the apex, the apex and the outer strip being made of a rubber compound that has an elastic modulus G′ less than or equal to 15 MPa and a viscous modulus G″ such that: G″[MPa]≦0.2·G′[MPa]−0.2 MPa, the elastic and viscous moduli being measured at 23° C.; wherein the entity formed by the apex and the outer strip has a thickness E(r), the thickness E(r) varying such that, in the range of distances r comprised between 25 and 45% of the height H of the tire, the variation in thickness ∂ E ⁡ ( r ) ∂ r is less than or equal to −0.25 mm/mm over at least 4% of the height H of the tire, that, in the range of distances r comprised between 15 and 35% of the height H, the variation in thickness ∂ E ⁡ ( r ) ∂ r is greater than or equal to 0.20 mm/mm over at least 2% of the height H of the tire, and that, in the range of distances r comprised between 10 and 20% of the height H of the tire, the variation in thickness ∂ E ⁡ ( r ) ∂ r is greater than or equal to −0.10 mm/mm and less than or equal to 0.0 mm/mm over at least 5% of the height H of the tire.

    Tread with variable chamfers
    9.
    发明授权
    Tread with variable chamfers 有权

    公开(公告)号：US09789737B2

    公开(公告)日：2017-10-17

    申请号：US14363625

    申请日：2012-11-27

    Applicant: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN ,  MICHELIN RECHERCHE ET TECHNIQUE S.A.

    Inventor： Frédéric Bourgeois ,  François-Xavier Bruneau

    IPC: B60C11/13 ,  B60C11/11 ,  B60C11/12 ,  B60C11/03

    CPC classification number: B60C11/1392 ,  B60C11/0302 ,  B60C11/0304 ,  B60C11/0306 ,  B60C11/0332 ,  B60C11/11 ,  B60C11/12 ,  B60C11/1384

    Abstract: Tread having a plurality of generally circumferentially orientated grooves delimiting a plurality of relief elements, this tread further comprising a plurality of cut-outs in the form of transversely orientated grooves and/or slits, each relief element comprising a contact face intended to come into contact with the road and lateral faces cutting this contact face along edges intended to come into contact with a road during running, this tread having chamfers on at least a plurality of transverse edges of the relief elements, this tread having, in straight-line running, a total contact surface S comprising a part Sc in which all the transverse edges have chamfers and a part Snc in which all the transverse edges are free of chamfers, this tread having, in a cornering maneuver corresponding to a transverse acceleration of 0.3 g (where g is the acceleration due to gravity), a total footprint surface S* formed by a part Sc* comprising chamfers on all the transverse edges of its relief elements and a part Snc* free of any chamfer, this tread being such that the ratio Snc/Sc is equal to not more than 2% and that the ratio Snc*/Sc* is equal to or greater than 10%.

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