• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A tire (1) having a directional tread (2) comprising a plurality of blocks (5) extending continuously along an overall curvature C from one of the edges (3) to the center (4) of said tread rolling, all or part of the blocks (5) of the tread comprising a median incision (10) of length S extending along a curvature C 'substantially identical to the curvature C of the block, each block (5) comprising a zone center with an angle β1 such that 35 ° ≤β1≤65 °, an edge zone with an angle β3 such that 0 ° ≤β3≤10 °, and an intermediate zone between the central zone and the edge zone with an angle β2 allowing continuity between the three zones, at least a part of the blocks (5) being arranged with a block chamfer (15) provided at the trailing edge of the intermediate zone and / or the edge zone.
    公开号:FR3033145A1
    申请号:FR1500394
    申请日:2015-02-27
    公开日:2016-09-02
    发明作者:David Mosnier；Michel Montarras；Yann Hye
    申请人:Michelin Recherche et Technique SA Switzerland ；Compagnie Generale des Etablissements Michelin SCA；
    IPC主号:
    专利说明:

    [0001] FIELD OF THE INVENTION [0001] The present invention relates to a tire provided with a directional tread adapted for winter weather conditions involving, for example, highways. covered with ice and / or snow, the tread being provided with a plurality of curved blocks aligned along the tread.
    [0002] STATE OF THE PRIOR ART [0002] US4057089 discloses a tire comprising a tread provided with a plurality of blocks. Each of these blocks is arranged in the shape of a curve and extends from the center of the tread to one of the edges. Some blocks are arranged in the form of a parabolic curve of the second degree. The blocks are connected to a central band. The blocks being relatively wide, the rigidity of these same blocks is therefore important, resulting in rapid wear of the tread. The document W02013 / 048682 generally relates to tires whose treads have a configuration and / or properties adapted to snowy ground conditions, but also for a dry ground. More specifically, the document describes a tire having a tread with a high density of lamellae in the contact zone, a reliable density of lateral grooves and a minimum value of longitudinal contact surface ratio. These characteristics give the tire a good compromise between the braking characteristics on snowy ground and on dry ground. Nevertheless, in a perspective of continuous improvement of the performance levels of the pneumatic tires, the designers are looking for even more efficient solutions, in particular with regard to performance on snow-covered ground. [0004] In order to overcome these various drawbacks, the invention provides various technical means .. SUMMARY OF THE INVENTION [0005] First of all, a first object of the invention is to provide a tread for a tire enabling [0006] Another object of the invention is to provide a tread 15 making it possible to maintain an optimum balance between braking on dry ground and improving the durability of a tread provided with blocks configured according to curved profiles. Another object of the invention is to obtain an excellent compromise of adhesion on snow-covered ground / wet ground while preserving the performances on ground 20 sec. (0008) To do this, the invention provides a tire having a directional tread, said tread having two edges and a center, said tread comprising a plurality of blocks, each block 25 extending e continues along an overall curvature C of one of the edges towards the center of said tread forming a block central end, each block having a width WB and a length LB, this width increasing from the central end of the block to direction of the edge, all or part of the blocks of the tread comprising a median incision of length S, said median incision extending along a curvature C 'substantially identical to the curvature C of the block. According to the invention, each block comprises a central zone with an angle r31 relative to the transverse direction (Y) such that 35 ° E (3165 °) an edge zone with an angle (33 such that 0 ° E (33e10 °, and an intermediate zone P10-3548fr 303 between the central zone and the edge zone with an angle (32, and at least one block comprises a block chamfer provided at the leading edge and / or the trailing edge of the block of said intermediate zone and / or said edge zone, and in that said central zone is devoid of chamfer. [0009] According to an advantageous embodiment, the block chamfers are arranged on a trailing edge of the block The presence of a chamfer, in particular on the trailing edge of these zones, promotes braking on dry ground In order to maintain an optimal balance between the braking on dry ground and the transmission of the engine torque, it is desirable to limit reductions in the area of contact with the soil. well respected by omitting or removing the chamfer along the central zone. Thus, by providing chamfers only on the edge zone 15 of the block and the intermediate zone of the block, braking is improved on dry ground, without reducing the contact surface too much. Furthermore, since the intermediate zone is arranged with a large angle relative to the transverse direction (y), the presence of a chamfer along this zone would have a limited effect on the braking performance on dry ground. According to an advantageous embodiment, at least a portion of the median incisions comprise an incision chamfer. [0012] The incision chamfer is advantageously located in the intermediate zone. Advantageously, at least a portion of the middle incisions comprises stiffening means connecting, for each incision, the opposite faces of this incision. [0014] The stiffening means are preferably arranged in the incision at intervals of 5 to 20 mm. P10-3548en Advantageously, in at least one incision, the spacing between the stiffening means is variable. [0016] Also advantageously, the stiffening means are integral with the tread. With the stiffening means, the dry ground braking is once again improved. Indeed, this arrangement limits the tilting of the two half-blocks 10 separated by the median incision. According to one embodiment, the chamfers form a wall inclined at substantially 45 ° with respect to the tread surface. According to another embodiment, the chamfers are curved. Preferably these chamfers are at 45 °, with a section between 1x1 mm and 2x2 mm. Alternatively, they may also be constituted by a radius (for example 1 to 2 mm) connecting to the faces of the blocks. [0021] Advantageously, the curvature C 'of the median incision is determined so that the projection ratio Sx / Sy corresponds to 0.5 Sx / Sy 1.25, with Sx denoting the projection of the length S the incision along a circumferential axis X of the tread and Sy designating the projection of this length S along a transverse axis Y of the tread. Such an arrangement makes it possible to obtain an advantageous compromise between the grip characteristics on snow-covered ground / wet ground without loss of performance for braking on dry ground. This gain is due to the coupled effect of the edges 30 created by the incisions and their orientations which have a friction effect on the snow and thus improve the adhesion. The presence of the incision and the orientation of the latter make it possible to improve the grip on snow-covered ground because of the edges. In addition, the incision interruption zone makes it possible to increase the rigidity along the X axis and to improve braking on dry ground. This tire is advantageously intended for all-season use. According to an advantageous embodiment, all or part of the blocks of the tread comprise a generally circumferential incision arranged at the end of the middle incision opposite the central end of the block, said generally circumferential incision s' extending from one edge to the other of the block. This incision promotes the flattening of the tire by the decoupling created. The stiffness in the shoulder is however retained to allow a good cornering behavior. According to an advantageous embodiment, the circumferential incision is V-shaped whose tip forms an angle α of between 1000 and 170 ° and preferably between 150 ° and 170 °. In a variant, the circumferential incision is in the global form of "S". In another variation, this incision may comprise several small segments while maintaining a generally circumferential orientation. [0027] According to another advantageous embodiment, all or part of the blocks of the tread comprise a lateral incision arranged in the extension of the median incision and uncoupled from said median incision. lateral incision widens from a certain depth in the tread, forming an incision enlargement, said incision widening opening onto the shoulder of the tire, beyond the edge of the tread. 0029] This widening of the incision makes it possible to extend the favorable characteristics of adhesion on snow-covered ground despite the wear of the blocks, up to about 3 mm of block height. The water drop-shaped profile is used to store water and promotes wet performance. [0030] According to another advantageous embodiment, at least a portion of the median incisions comprise bridges of mixtures. lastomères along the incision. Bridges are particularly advantageous in the central zone, this zone having the greatest angle with respect to the transverse direction (Y). The bridges are preferably arranged at intervals of 15 to 20 mm. The height of these bridges is preferably between 40 and 80% of the maximum height of the incisions. [0032] Advantageously, the blocks consist of an elastomer composition based on a diene elastomer, a plasticizer system and an inter-linkage system, in which the elastomer composition has a glass transition temperature of between: 40 ° C and -15 ° C and a shear modulus G * measured at 60 ° C between 0.5 MPa and 1.1 MPa. Such a composition allows use in winter conditions with very cold temperatures without degradation of performance. [0034] In addition, the applicants have surprisingly found that the tread according to the invention, With a general appearance of the blocks evoking a summer-type tire, particularly advantageous behavioral characteristics on snow-covered and / or glazed ground, the limits of these performances are further favorably pushed back with the use of the previously described compositions.
    [0003] In addition, advantageous gains in performance are observed when the glass transition temperature of the elastomeric composition is between -20 ° C. and -30 ° C. [0036] The shear modulus G * is preferably between 0.9 MPa and 1 MPa DESCRIPTION OF THE FIGURES [0037] All the details of embodiment are given in the description which follows, supplemented by FIGS. 1 to 4, presented solely for the purposes of non-limiting examples, and in which: - Figure 1 is a schematic representation of a portion of a tread corresponding substantially to the contact area; - Figure 2 is a schematic representation of a block for a tread such as that of Figure 1 - Figure 3 shows an alternative embodiment of the block of Figure 2 - Figure 4 is a partial schematic representation of an alternative embodiment of the tread of Figure 1 with bridges arranged along the incisions. DETAILED DESCRIPTION OF THE INVENTION DEFINITIONS In this document, curvilinear length "L" or "S" means a measured length taking into account the curvature of the "L" or "S" element measured . By "directional sculpture" is meant a tread sculpture whose tread elements are specifically arranged to optimize the behavioral characteristics as a function of a predetermined direction of rotation. This direction of rotation is conventionally indicated by an arrow on the sidewall of the tire. In such an architecture, the edges of the tread elements that are toward the direction of travel are referred to as the leading edge, while the edges of the tread elements that are opposite the direction of travel are designated by the term "trailing edge". In addition, a "directional sculpture" is a sculpture involving a preferential direction of travel such that, when the tire is rotated in the said preferred direction, this tire offers better ground adhesion properties than those offered when rotates said tire in the other direction. A directional sculpture is, for example, a sculpture with generally V-shaped patterns. By "incision" is meant a slit or slit (between 0.1 and 2 mm) and elongated cut in a tape block. rolling. By "median incision in the block" is meant that this median incision separates this block into two generally identical block portions. The surface difference between these two block portions being less than 10%, by surface is meant that which can be in contact with the ground in the contact area. By "lateral incision" is meant an incision extending generally in the transverse direction Y, the angle formed by the direction of extension of this incision with the transverse direction Y being less than 15 degrees, in value. absolute. By "decoupled lateral incision of the median incision" is meant that there is a gum zone between the lateral incision and the medial incision. The length of this rubber zone is at least 2 mm. By "circumferential incision" is meant an incision extending generally in the circumferential direction X, the angle formed by the extension direction of this incision with the circumferential direction X being less than or equal to 20 degrees, in absolute value. By "globally circumferential arrangement" is meant an arrangement 5 such that the projection ratio Ry / Rx corresponds to 0 Ry / Rx 0.6. By "tread" is meant the area of the tire of which at least a portion is subjected to contact with the ground and is worn by this contact with the ground. By "each block extending continuously from an edge 3 to the center 4" is meant that the block is not interrupted by separating grooves separating this block into different sub-blocks. By groove means a cutout whose material faces do not touch in the usual conditions of rolling. The width of a groove is greater than or equal to 2 mm. Thus, the fact that these blocks are not interrupted by separating grooves makes it possible to improve the evacuation of water from the center 4 to the edge 3, the presence of such separating grooves being able to disturb the flow of the flow of water towards the outside of the tire. By "overall curvature C of the block" is meant that the block has a curved shape. This curvature can be constant or continuously variable. In another variant the curvature consists of a succession of segments. [0049] By "global curvature G" of the median incision "is meant that the median incision has a curved trace. This curvature can be constant or continuously variable. In another variant the curvature consists of a succession of segments. FIG. 1 substantially illustrates the contact area of a tire tread 2. The contact area has a maximum width WA defined by the ETRTO standard and illustrated in FIG. 1 between the dashed lines. delimited by the width WA. The ETRTO standard provides a width WA = (1.075-P10-3548fr 3033145 10 0.005arrSiml with "ar" the nominal aspect ratio and S the size of the theoretical flange on the measuring rim The side edges 3 of the tread are in correspondence with the dotted lines delimiting the width WA. [0051] According to the invention, the tread 2 comprises a plurality of blocks 5. Each of the blocks extends from an edge 3 of the tread to the tread. center axis 4 of the tread generally following a curvature C. The expression "towards the center" means here that the block ends at the center, or just before the center or just after the center. The center 4 is defined by a line extending in the circumferential direction and dividing the tread into two halves For the large tire dimensions, a longitudinal groove can be added at this center 4. [0052] Each of the blocks is of length LB and width WB, this width 15 increasing from the central end of block towards the edge 3. The blocks are advantageously configured in three zones, a central zone, an intermediate zone and an edge zone. The central zone forms an angle 131 with respect to the transverse direction (Y) of between 350 and 65 ° and more preferably of substantially 50 ° + -5 °. At the edge of the blocks, there is the edge zone with an angle p3 with respect to the transverse direction (Y) of between 0 ° and 10 °. In order to ensure a continuous connection between these two zones, the intermediate zone is provided. This intermediate zone makes it possible to ensure the connection between the central zone and the edge zone with an angle 132 allowing continuity between the three zones. Because of this three-zone arrangement, the blocks comprise a curvature C, progressive from the edge 3 towards the center 4. For the shaping of this curvature, the sides of the blocks form, as the case may be, either a continuous curved line from the edges 3 to the center 4, which curvature may be variable, or a plurality of angular segments, as represented in FIGS. 2 and 3. In the case where a block area is configured by a succession of 30 segments the angle p is the average angle. In the case where a block area is configured by a curvilinear segment, the angle p is the average of the angles along the curvature. At least a portion of the blocks 5 comprises a median incision 10 extending along the block following a curvature C 'similar to the curvature C of the block. This incision makes it possible to separate the block into two parts 8a and 8b, of 5 volumes that are preferentially substantially identical. Alternatively, only a portion of the blocks 5 comprises a median incision 10. The median incision 10 reduces the rigidity of the block 5 by separating it into two half-blocks. The rigidity of each half-block is substantially identical, contributing to uniform wear of these two half-blocks. The median incision 10 has a curvilinear length S. This length S of the median incision is preferably determined so that 0.51 S 0.8.L. According to the invention, at least part of the blocks 5 comprises a generally circumferential incision 11 arranged at the end of the median incision 10. By "generally circumferential" is meant an arrangement such as the projection ratio Ry / Rx is 0 É Ry / Rx É 0.6. This incision produces a decoupling effect favoring the flattening of the tire. [0056] The examples of FIGS. 1 and 2 illustrate generally V-shaped circumferential incisions whose point of the V forms an angle α of between 1000 and 170 ° and preferably between 150 ° and 170 °. According to the embodiments, the tip of the V may be oriented either towards the center of the tread, or towards the proximal edge of the tread. A V-shaped incision improves adhesion in the longitudinal and transverse directions. The embodiment of Figure 3 shows a block 5, the generally circumferential incision 11 is shaped "S". The shaped profile is sufficiently elongated for the incision to meet the criterion that the projection ratio Ry / Rx is between 0 and 0.6. Lastly, the blocks 5 provide at least one lateral incision 12, arranged at the level of the block edge zone. This incision is shifted transversely with respect to the medial incision 10 and the circumferential incision 11. The offset between this incision and the other incisions is preferably between 3 and 6 mm. This offset, by increasing the stiffness locally, contributes to improving the braking efficiency on dry ground. [0059] Preferably, this lateral incision 12 widens out from a certain depth of sculpture, forming an incision enlargement 13. This incision widening 13 opens on the shoulder of the tire and forms a shaped profile. Advantageously, the incisions 10 and 12 are arranged at the level of the neutral fiber of the blocks, that is to say so as to separate the blocks into two parts of volumes substantially. The depth of the incisions is preferably between 85% and 105% of the depth of the grooves delimiting the blocks. [0061] FIG. 3 also shows an incision chamfer 14, provided at the level of the incision. median 10. In the illustrated example, the incision chamfer 14 extends along the intermediate zone, then slightly beyond this zone on an adjoining portion of the edge zone, substantially until the incision 11 globally circumferentially. block chamfer 15, located at the trailing edge of the edge zone and the intermediate zone is also shown. The edge zone and the intermediate zone, because of their small inclination 30 with respect to the transverse direction Y, are the most sensitive to the tilting phenomenon during strong braking stresses. This bias induces an overpressure on the edge of the trailing edge which, under certain conditions, penalizes the braking action. The presence of the previously described chamfers makes it possible to attenuate or even eliminate this phenomenon. [0065] The presence of chamfers on too many edges has the effect of reducing the volume of material to be used and of increasing the rate of surface notching, with a negative impact on the noise emitted by the tire. To avoid these disadvantages, the central zone, more inclined, is devoid of chamfers. This judicious distribution of the chamfers makes it possible to restrict their use to the areas in which they are most effective. FIG. 4 illustrates an embodiment variant comprising stiffening means 16 such as bridges arranged at certain positions along the middle incision 10. These bridges make it possible to greatly reduce the retention of pebbles in the incisions. In addition, it has been found that a DP spacing between the bridges 16 of between 15 mm and 20 mm makes it possible to optimize this non-retention effect, without affecting the efficiency of the lamellae on snowy ground. According to the embodiments envisaged, this type of arrangement makes it possible to provide incisions of a length of the order of 70 mm. The tread blocks consist of an elastomer composition based on a diene elastomer, a plasticizer system and an inter-linkage system, wherein the elastomer composition has a glass transition temperature of between: 40 ° C and -15 ° C and a shear modulus G * measured at 60 ° C between 0.5 MPa and 1.1 MPa. [0068] The diene elastomer is selected from the group consisting of natural rubber, styrene-butadiene rubber, polyisoprene synthetic rubber, polybutadiene rubber and any combinations of these constituents. The plasticizer system comprises plasticizers selected from a plasticizing oil, a plasticizing resin or any combination thereof. P10-3548en 3033145 14 [0069] The plasticizing resin is a polylimonène resin. The plasticizing oil is selected from a petroleum-based oil, a vegetable oil, or any combination thereof. [0070] The figures and their descriptions made above illustrate the invention rather than limiting it. In particular, the invention and its various variants have just been described in connection with a particular example comprising identical blocks on the entire surface of the tread. Nevertheless, it is obvious to a person skilled in the art that the invention may be extended to other embodiments in which, in variant, non-identical blocks are provided either along the circumferential alignment, or both sides of the center line of the tread. It can also be provided that at least one of the ends of the median incisions 10 comprises a bridge in the central portion of the tread and / or between the medial incision and the circumferential incision. The reference signs in the claims are not limiting in nature. The verbs "to understand" and "to include" do not exclude the presence of elements other than those listed in the claims. P1O-3548en 3033145 15 Reference numbers used in Figures 1 Pneumatic 2 Tread 3 Tread Edge 4 Tread Center Axle 5 Block 6 Central End of Block 7 Central End Wall of Block 8a Edge Part block 8b trailing edge Block 10 trailing edge section Median incision 11 Globally circumferential incision 12 Lateral incision 13 Enlargement of incision in depth 14 Incision chamfer 15 Block chamfer 16 Means of stiffening P10-3548en
    权利要求:
    Claims (13)
    [0001]
    REVENDICATIONS1. A tire (1) comprising a tread (2) directional, said tread (2) having two edges (3) and a center (4), said tread comprising a plurality of blocks (5), each block continuously extending in an overall curvature C from one of the edges (3) to the center (4) of said tread forming a central end (6) of block, each block (5) having a width WB and a length LB, this width increasing from the central end (6) of block towards the edge (3), all or part of the blocks (5) of the tread comprising a median incision (10) of length S, said median incision (10) extending along a curvature C 'substantially identical to the curvature C of the block, characterized in that each block (5) comprises a central zone with an angle 131 with respect to the transverse direction (Y) such that 35'S (31565 °) an edge zone with an angle (33 such that 0 ° 513310 °, and an intermediate zone the area between the central zone and the edge zone at an angle 132, and in that at least one block (5) comprises a block chamfer (15) provided at the leading edge and / or the trailing edge of the block of said intermediate zone and / or said edge zone, and in that said central zone is devoid of chamfer.
    [0002]
    2. A tire according to claim 1, wherein the block chamfers are arranged on a trailing edge of the block.
    [0003]
    The tire of claim 1 or 2, wherein at least a portion of the middle incisions (10) has an incision chamfer (14).
    [0004]
    4. A tire according to claim 3, wherein the incision chamfer (14) is located in the intermediate zone.
    [0005]
    5. A tire according to one of the preceding claims, wherein at least a portion of the middle incisions (10) comprises stiffening means (16) connecting, for each incision, the opposite faces of this incision. P10-3548en 3033145 17
    [0006]
    6. The tire of claim 5, wherein the stiffening means (16) are arranged in the incision in intervals of 5 to 20 mm. 5
    [0007]
    7. A tire according to one of claims 5 or 6 wherein, in at least one incision, the spacing between the stiffening means (16) is variable.
    [0008]
    8. A tire according to one of claims 5 to 7, wherein the stiffening means (16) are integral with the tread. 10
    [0009]
    9. A tire according to one of claims 1 to 8, wherein the chamfers form a wall inclined at substantially 45 ° with respect to the tread surface. 15
    [0010]
    10. A tire according to one of claims 1 to 8, wherein the chamfers are curved.
    [0011]
    Tire according to one of the preceding claims, in which the blocks (7) consist of an elastomer composition based on a diene elastomer, a plasticizer system and an inter-linkage system, in which the elastomer composition comprises a glass transition temperature between -40 ° C and -15 ° C and a shear modulus G * measured at 60 ° C between 0.5 MPa and 1.1 MPa. 25
    [0012]
    The tire of claim 11, wherein the glass transition temperature of the elastomeric composition is from -20 ° C to -30 ° C.
    [0013]
    Tire according to claim 12, wherein the shear modulus G * is between 0.9 MPa and 1 MPa. P10-3548_en notif notif irreg_11052015_clean
    类似技术:
    公开号 | 公开日 | 专利标题
    EP3261857B1|2018-07-18|Tyre with a directional tread comprising curved blocks with chamfers
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    CA2055645C|1999-02-16|Tire casing tread for heavy vehicule
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    CA2383301C|2010-08-17|Tire tread consisting of ribs that are incised at variable angles
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    EP2661376B1|2016-09-28|Tire for heavy duty vehicle and arrangement of tires of a drive axle and a steering axle
    FR2993500A1|2014-01-24|TREAD TIRE FOR HEAVY-DUTY AND TIRE ENGINE AXLE TIRES
    FR2935296A1|2010-03-05|TIRE TREAD WITH DIRECTIONAL SCULPTURE.
    EP3126158B1|2019-11-20|Tread with channels on the edges of same
    EP2552715B1|2014-07-16|Tyre tread having incisions
    EP3377340B1|2020-07-01|Tire comprising a block with a tilted side wall
    EP1097826A1|2001-05-09|Tread pattern
    EP3261855A1|2018-01-03|Tyre with directional two-material tread, comprising an alternation of curved blocks
    FR2483332A1|1981-12-04|Tyre for touring vehicles - is of radial type with five circumferential row tread pattern and cross grooves
    同族专利:
    公开号 | 公开日
    EP3261857A1|2018-01-03|
    FR3033145B1|2017-02-24|
    CN107249905A|2017-10-13|
    CN107249905B|2019-08-27|
    US20180029423A1|2018-02-01|
    EP3261857B1|2018-07-18|
    WO2016134991A1|2016-09-01|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US1127517A|1912-02-15|1915-02-09|Fred E Hammond|Vehicle-tire.|
    FR2291879A1|1974-11-21|1976-06-18|Continental Gummi Werke Ag|MOTOR VEHICLE TIRES|
    GB2240522A|1990-01-10|1991-08-07|Uniroyal Englebert Gmbh|Tyre tread patterns|
    EP2769856A1|2013-02-25|2014-08-27|Sumitomo Rubber Industries, Ltd.|Pneumatic tire|
    DE9000203U1|1990-01-10|1991-02-21|Uniroyal Englebert Reifen Gmbh, 5100 Aachen, De|
    FR2692201A1|1992-06-11|1993-12-17|Michelin & Cie|Train with directional tread tires.|
    US5824169A|1995-01-20|1998-10-20|The Goodyear Tire & Rubber Company|Pneumatic tire having improved wear properties|
    US5733393A|1996-01-17|1998-03-31|The Goodyear Tire & Rubber Company|Tire having good diverse properties|
    JPH10151915A|1996-11-21|1998-06-09|Sumitomo Rubber Ind Ltd|Pneumatic tire|
    CN103826870B|2011-08-31|2016-10-19|米其林集团总公司|There is the tire tread of the snowfield/dry traction of improvement|
    RU2561149C1|2011-09-29|2015-08-27|Мишлен Решерш Э Текник С.А.|Tire with tread having improved adhesion with snow and dry pavement|
    USD718224S1|2013-01-07|2014-11-25|Compagnie Generale Des Etablissements Michelin|Tire tread|WO2019123277A1|2017-12-22|2019-06-27|Bridgestone Europe Nv/Sa|Tread for a pneumatic tyre|
    WO2021089960A1|2019-11-06|2021-05-14|Compagnie Generale Des Etablissements Michelin|Tire comprising a tread|
    WO2021089964A1|2019-11-06|2021-05-14|Compagnie Generale Des Etablissements Michelin|Tire comprising a tread|
    FR3108562A1|2020-03-26|2021-10-01|Compagnie Generale Des Etablissements Michelin|Tire with a tread optimized for grip on snow-covered ground|
    FR3108561A1|2020-03-26|2021-10-01|Compagnie Generale Des Etablissements Michelin|Tire with a tread optimized for dry grip|
    法律状态:
    2016-02-18| PLFP| Fee payment|Year of fee payment: 2 |
    2016-09-02| PLSC| Search report ready|Effective date: 20160902 |
    2017-02-17| PLFP| Fee payment|Year of fee payment: 3 |
    2018-02-23| PLFP| Fee payment|Year of fee payment: 4 |
    2019-10-25| ST| Notification of lapse|Effective date: 20191006 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1500394A|FR3033145B1|2015-02-27|2015-02-27|PNEUMATIC WITH DIRECTIONAL BEARING BAND HAVING CURVED BLOCKS WITH CHAMFERS|FR1500394A| FR3033145B1|2015-02-27|2015-02-27|PNEUMATIC WITH DIRECTIONAL BEARING BAND HAVING CURVED BLOCKS WITH CHAMFERS|
    US15/553,686| US20180029423A1|2015-02-27|2016-02-12|Tire With A Directional Tread Comprising Curved Blocks With Chamfers|
    PCT/EP2016/053049| WO2016134991A1|2015-02-27|2016-02-12|Tyre with a directional tread comprising curved blocks with chamfers|
    EP16704221.7A| EP3261857B1|2015-02-27|2016-02-12|Tyre with a directional tread comprising curved blocks with chamfers|
    CN201680011652.2A| CN107249905B|2015-02-27|2016-02-12|Tire with the directional tread for including the bending pattern block with chamfering|
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