EP3261855A1 - Pneumatique avec bande de roulement directionnelle et bi-matiere comportant une alternance de blocs incurves - Google Patents
Pneumatique avec bande de roulement directionnelle et bi-matiere comportant une alternance de blocs incurvesInfo
- Publication number
- EP3261855A1 EP3261855A1 EP16704218.3A EP16704218A EP3261855A1 EP 3261855 A1 EP3261855 A1 EP 3261855A1 EP 16704218 A EP16704218 A EP 16704218A EP 3261855 A1 EP3261855 A1 EP 3261855A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tread
- tire
- incision
- intermediate layer
- block
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/0041—Tyre tread bands; Tread patterns; Anti-skid inserts comprising different tread rubber layers
- B60C11/005—Tyre tread bands; Tread patterns; Anti-skid inserts comprising different tread rubber layers with cap and base layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/03—Tread patterns
- B60C11/0302—Tread patterns directional pattern, i.e. with main rolling direction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/03—Tread patterns
- B60C11/0306—Patterns comprising block rows or discontinuous ribs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/03—Tread patterns
- B60C11/0306—Patterns comprising block rows or discontinuous ribs
- B60C11/0309—Patterns comprising block rows or discontinuous ribs further characterised by the groove cross-section
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/03—Tread patterns
- B60C11/11—Tread patterns in which the raised area of the pattern consists only of isolated elements, e.g. blocks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/0008—Tyre tread bands; Tread patterns; Anti-skid inserts characterised by the tread rubber
- B60C2011/0016—Physical properties or dimensions
- B60C2011/0025—Modulus or tan delta
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/03—Tread patterns
- B60C2011/0337—Tread patterns characterised by particular design features of the pattern
- B60C2011/0339—Grooves
- B60C2011/0374—Slant grooves, i.e. having an angle of about 5 to 35 degrees to the equatorial plane
Definitions
- the present invention relates to a tire provided with a directional tread adapted for winter weather conditions involving for example roads covered with ice and / or snow, the tread being provided with a plurality of blocks in shaped curves aligned along the tread.
- US4057089 discloses a tire having 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 invention provides different technical means.
- a first object of the invention is to provide a tire tread for improving durability.
- Another object of the invention is to provide a tire whose tread can reduce rolling resistance.
- Another object of the invention to provide a tread to obtain an excellent compromise grip on snowy ground / wet soil preserving performance on dry ground.
- the invention provides a tire comprising a directional tread, said tread having two edges and a center, said tread comprising a plurality of blocks, each block extending continuously according to 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 towards the edge , all or part of the blocks of the tread comprising a median incision of length S, said median incision extending from the central end of the block according to a curvature C substantially identical to the curvature C of the block, the bearing consisting of a first rubber composition based on a diene elastomer, a reinforcing inorganic filler and a plasticizer system, wherein The first rubber composition has a glass transition temperature of between -40 ° C.
- the tire comprising a layer intermediate located under the tread and in contact with a radially inner face of this tread, the intermediate layer comprising a second rubber composition having:
- Such an architecture in particular thanks to the presence of the intermediate layer and its composition, makes it possible to reduce the rolling resistance.
- Such a composition also allows use in winter conditions with very cold temperatures without degradation of performance.
- the applicants have found, surprisingly, that the tread according to the invention, with a general appearance of the blocks evoking a summer-type tire, has particularly advantageous behavioral characteristics on snow-covered ground and / or ice cream. The limits of these performances are still favorably repelled with the use of the previously described compositions.
- the glass transition temperature of the elastomeric composition is between -20 ° C and -30 ° C.
- the second rubber composition comprises a nominal secant modulus at 10% elongation (MA10) of between 4 and 6 MPa.
- the second rubber composition comprises a P60 between 9 and 15, and a shore hardness A between 61 and 65.
- the tread having an average thickness E and the intermediate layer having an average thickness e has a value of between 25% and 60% of the average thickness E of the tread.
- the tire comprising at least one groove in the tread and at least one wear indicator of height T protruding from the groove, the intermediate layer extends, seen in cut in the tire, up to a level corresponding to the maximum height T of the wear indicator.
- the tire comprises, under the intermediate layer, a hooping layer in contact with this intermediate layer, the hooping layer comprising parallel reinforcements embedded in a third rubber composition, said parallel reinforcements forming a an angle at most equal to 10 ° with a circumferential direction of the tire and the intermediate layer protrudes laterally the shrink layer.
- This layer provides protection of the crown area and also reduces the risk of cracking. Any crack initiators can not propagate in the rest of the tire. Summit plies are thus protected from any infiltration of water likely to degrade the tire.
- the tire comprises electrically conductive means extending in the tread from the surface of said tread to the hooping layer.
- the length S of the median incision is determined so that 0.5. LB ⁇ S ⁇ 0.8.LB and 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.
- This effect is due to the coupled effect of the edges created by the incisions and their orientations that have a rubbing effect on the snow and thus improve the grip.
- the presence of the incision as well as the orientation of the latter make it possible to improve the grip on snowy ground because of the edges.
- 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.
- all or part of the blocks of the tread comprises 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.
- the circumferential incision is V-shaped whose tip forms an angle ⁇ between 100 ° and 170 ° and preferably between 150 ° and 170 °.
- the circumferential incision is in the global form of "S".
- this incision may comprise several small segments while maintaining a generally circumferential orientation.
- all or part of the blocks of the tread further comprises at least one lateral incision arranged in the extension of the central incision and decoupled from the latter and the transverse incision. This incision allows an increase in the number of ridges in the shoulder area and consequently improves braking and traction on snowy roads. Decoupling makes it possible to maintain a certain rigidity in the block.
- the lateral incision widens from a certain depth of sculpture, forming a widening of incision, the widening of the incision opening onto the shoulder of the tire, beyond the edge of the tread.
- the teardrop shaped profile stores water and promotes wet performance.
- At least a portion of the middle incisions comprises an incision chamfer.
- the incision chamfer is advantageously located in the intermediate zone. Alternatively, it extends to the generally circumferential incision.
- At least a portion of the blocks are arranged with a block chamfer provided at the trailing edge of the intermediate zone and / or the edge zone.
- these chamfers are at 45 °, with a section between 1 x1 mm and 2x2 mm. They can also be constituted by a radius (1 to 2 mm) connecting to the faces of the blocks.
- At least a portion of the middle incisions comprises stiffening means connecting, for each incision, the opposite faces of this incision.
- the stiffening means are particularly advantageous in the central zone, this zone having the largest angle relative to the transverse direction (Y).
- the stiffening means are preferably arranged in the incision in intervals of 5 to 20 mm.
- the height of stiffening means is preferably between 40 and 80% of the maximum height of the incisions. Thus, these stiffening means do not extend to the surface of the tread when the tire is new.
- the spacing between the stiffening means is variable.
- the stiffening means are integral with the tread. DESCRIPTION OF THE FIGURES
- FIG. 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;
- FIG. 3 is a diagrammatic representation in section of a crown zone portion of a tire according to the invention.
- curvilinear length "L” or “S” means a measured length taking into account the curvature of the element "L” or “S” measured.
- directional sculpture is meant a tread sculpture whose sculpture elements are specifically arranged for optimize the behavioral characteristics according to a predetermined direction of rotation. This direction of rotation is conventionally indicated by an arrow on the sidewall of the tire.
- leading edge the edges of the carving elements which are towards the rolling direction
- the edges of the carving elements which are opposite to the rolling direction are designated by the term “trailing edge”.
- 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 a sculpture with generally V-shaped patterns.
- cision means a cut or slit thin (between 0.1 and 2 mm) and elongate made in a tread block.
- 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.
- 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.
- decoupled lateral incision of the median incision is meant that there is a zone of gum between the lateral incision and the median incision.
- the length of this rubber zone is at least 2 mm.
- circumferential incision is meant an incision extending generally in the circumferential direction X, the angle formed by the direction extending this incision with the circumferential direction X being less than or equal to 20 degrees, in absolute value.
- 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.
- 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.
- all 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.
- global curvature C 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.
- read 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.
- “Shore A hardness” means the hardness of the compositions after cooking, evaluated according to ASTM D 2240-86. Measuring in second elongation (ie, after an accommodation cycle at the extension rate provided for the measurement itself) the nominal secant moduli (or apparent stress, in MPa) at 10% elongation (noted MA 10) and at 100% elongation (denoted MA 100) at 23 ° C ⁇ 2 ° C, and under normal humidity conditions (50 ⁇ 5% relative humidity) according to ASTM D-412 .
- FIG. 1 illustrates the contact area of a tread 2 of tire 1.
- the contact area has a maximum width WA defined by the ETRTO standard and illustrated in Figure 1 between the dotted lines delimited by the width WA.
- the edges 3 of the tread are in correspondence with the dotted lines delimiting the width WA.
- the tread 2 comprises a plurality of blocks 5.
- Each of the blocks extends from an edge 3 of the tread towards the center axis 4 of the tread while following globally 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 wide tire dimensions, a longitudinal groove can be added to this center 4.
- Each of the blocks has a length LB and a width WB, this width increasing from the central end of the block towards the edge 3.
- the blocks are advantageously configured in three zones, namely a central zone, an intermediate zone and a edge area.
- the central zone forms an angle ⁇ with respect to the transverse direction (Y) of between 35 ° and 65 ° and more preferably of substantially 50 ° + -5 °.
- At the edges of the blocks there is an edge zone with an angle ⁇ 3 with respect to the transverse direction (Y) of between 0 ° and 10 °.
- an 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 ⁇ 2 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.
- the sides of the blocks form, depending on the case, either a curved line continues from the edges 3 towards the center 4, which curvature may be variable, ie a plurality of angular segments, as represented in FIG. 2.
- the angle ⁇ is the average angle.
- the angle ⁇ corresponds to 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, with preferentially substantially identical surfaces. As a variant, only a part of the blocks 5 comprises a median incision 10.
- the middle 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 preferentially determined so that 0.5. L ⁇ S ⁇ 0.8. L.
- at least part of the blocks 5 comprises a generally circumferential incision 1 1 arranged at the end of the median incision 10.
- generally circumferential is meant an arrangement such as the projection ratio. Ry / Rx corresponds to 0 ⁇ Ry / Rx ⁇ 0.6. This incision produces a decoupling effect favoring the flattening of the tire.
- Figures 1 and 2 illustrate generally circumferential incisions 1 1 V-shaped, the tip of the V forms an angle between 100 ° and 170 ° and preferably between 150 ° and 170 °.
- 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 blocks 5 provide at least one lateral incision 12, arranged at the level of the block edge area. This incision is shifted transversely 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.
- this lateral incision 12 widens from a certain depth of sculpture, forming a widening 13 incision.
- This widening 13 incision opens on the shoulder of the tire and forms a teardrop-shaped profile.
- 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 substantially identical volumes.
- FIG. 3 shows a section of a portion of an apex of a tire according to the invention in which an intermediate layer 18 is provided under the tread and in contact with a radially inner face of the tire strip. rolling.
- a shrinking layer 19 is disposed under the intermediate layer 18 and is in contact with this intermediate layer.
- the hooping layer 19 provides parallel reinforcements embedded in an elastomeric mixture.
- the reinforcements are substantially aligned in the circumferential direction, that is to say they form with this direction an angle at most equal to 10 °.
- the tread consists of a first rubber composition based on a diene elastomer, a reinforcing inorganic filler and a plasticizer system.
- This first rubber composition has a glass transition temperature of between -40 ° C. and -15 ° C. and a shear modulus G * measured at 60 ° C. of between 0.5 MPa and 1.1 MPa.
- the diene elastomer is selected from the group comprising natural rubber, styrene-butadiene rubber, polyisoprene synthetic rubber, polybutadiene rubber and any combination of these constituents.
- the plasticizer system comprises plasticizers selected from a plasticizing oil, a plasticizing resin or any combination thereof.
- the plasticizing resin is a polylimonene resin.
- the plasticizing oil is selected from a petroleum-based oil, a vegetable oil, or any combination thereof.
- the intermediate layer 18 comprises a second rubber composition having hysteretic losses (P60) of between 9 and 20 and a A shore hardness A of between 60 and 68. Furthermore, the second rubber composition comprises a nominal secant modulus at 10% elongation (MA10) of between 4 and 6 MPa. The second rubber composition comprises a MA10 of 4.4, a P60 of 12.5 and a Shore A hardness of 63.
- P60 hysteretic losses
- MA10 nominal secant modulus at 10% elongation
- the reinforcements of the hooping layer 19 are embedded in a third rubber composition.
- the intermediate layer 18 surrounds the hooping layer 19.
- the tread having an average thickness E and the intermediate layer having an average thickness e, the average thickness e of the intermediate layer 18 has a value of between 25% and 60% of the average thickness E of the tread.
- the tire according to the invention comprises a wear indicator of height T protruding from the groove 9.
- the intermediate layer 18 extends , seen in section in the tire, towards the tread to a level corresponding at most to the height T of the wear indicator. Locally, overruns inherent in the manufacturing process can be tolerated.
- the tire comprises electrically conductive means 20 extending in the tread from the surface of said tread to the shrinking layer 19.
- the conducting means take the form a circumferential insert.
- the mixture constituting this insert is provided so as to ensure a good level of electrical conductivity.
- the insert makes it possible to ensure good electrical conductivity between the hooping layer 19 and the ground in the case where the elastomer mixture of the tread does not provide sufficient electrical conductivity.
- non-identical blocks are provided either along the circumferential alignment or on the one hand. and other 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 median incision and the circumferential incision.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1500392A FR3033143B1 (fr) | 2015-02-27 | 2015-02-27 | Pneumatique avec bande de roulement directionnelle et bi-matiere comportant une alternance de blocs incurves |
PCT/EP2016/053042 WO2016134989A1 (fr) | 2015-02-27 | 2016-02-12 | Pneumatique avec bande de roulement directionnelle et bi-matiere comportant une alternance de blocs incurves |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3261855A1 true EP3261855A1 (fr) | 2018-01-03 |
Family
ID=53514233
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16704218.3A Withdrawn EP3261855A1 (fr) | 2015-02-27 | 2016-02-12 | Pneumatique avec bande de roulement directionnelle et bi-matiere comportant une alternance de blocs incurves |
Country Status (5)
Country | Link |
---|---|
US (1) | US20180022161A1 (fr) |
EP (1) | EP3261855A1 (fr) |
CN (1) | CN107257743A (fr) |
FR (1) | FR3033143B1 (fr) |
WO (1) | WO2016134989A1 (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11084329B2 (en) * | 2016-10-31 | 2021-08-10 | Compagnie Generale Des Etablissements Michelin | Tread made from multi compounds |
DE102018205257A1 (de) | 2018-04-09 | 2019-10-10 | Schott Ag | Verfahren zum herstellen eines glasartikels |
JP7211014B2 (ja) * | 2018-11-01 | 2023-01-24 | 横浜ゴム株式会社 | 空気入りタイヤ |
CN112248719B (zh) * | 2020-10-26 | 2022-08-16 | 吉林工程技术师范学院 | 一种多层仿生结构自行车防爆轮胎及其制备方法 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1127517A (en) * | 1912-02-15 | 1915-02-09 | Fred E Hammond | Vehicle-tire. |
DE2455130A1 (de) * | 1974-11-21 | 1976-05-26 | Continental Gummi Werke Ag | Luftreifen fuer kraftfahrzeuge |
JPS5639904A (en) * | 1979-09-01 | 1981-04-15 | Bridgestone Corp | Radial tire for passenger car with low rolling resistance |
IT1248635B (it) * | 1990-01-10 | 1995-01-21 | Uniroyal Englebert Gmbh | Pneumatico radiale per veicoli,con estremita'degli_elementi del profi lo,nella zona cinturata del battistrada,sviluppati a forma di forcella |
JPH1142910A (ja) * | 1997-07-30 | 1999-02-16 | Bridgestone Corp | 空気入りタイヤ |
US7810534B2 (en) * | 2003-04-04 | 2010-10-12 | The Yokohama Rubber Co., Ltd. | Pneumatic tire |
US7784510B2 (en) * | 2005-10-17 | 2010-08-31 | Sumitomo Rubber Industries, Ltd. | Heavy duty tire having cap and base rubber layers, belt cushion rubber and sidewall rubber |
BRPI1106827A2 (pt) * | 2010-11-10 | 2014-08-19 | Goodyear Tire & Rubber | Pneumático de passageiros tendo baixa resistência ao rolamento com tração molhada e desgaste de banda de rodagem |
US20140251519A1 (en) * | 2011-08-31 | 2014-09-11 | Compagnie Generale Des Etablissements Michelin | Tire tread with improved snow/dry traction |
JP5944734B2 (ja) * | 2012-04-27 | 2016-07-05 | 株式会社ブリヂストン | タイヤ |
JP5890790B2 (ja) * | 2013-02-25 | 2016-03-22 | 住友ゴム工業株式会社 | 空気入りタイヤ |
-
2015
- 2015-02-27 FR FR1500392A patent/FR3033143B1/fr not_active Expired - Fee Related
-
2016
- 2016-02-12 US US15/551,668 patent/US20180022161A1/en not_active Abandoned
- 2016-02-12 CN CN201680011673.4A patent/CN107257743A/zh active Pending
- 2016-02-12 EP EP16704218.3A patent/EP3261855A1/fr not_active Withdrawn
- 2016-02-12 WO PCT/EP2016/053042 patent/WO2016134989A1/fr active Application Filing
Also Published As
Publication number | Publication date |
---|---|
CN107257743A (zh) | 2017-10-17 |
FR3033143A1 (fr) | 2016-09-02 |
FR3033143B1 (fr) | 2017-02-24 |
WO2016134989A1 (fr) | 2016-09-01 |
US20180022161A1 (en) | 2018-01-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP3261854B1 (fr) | Pneumatique avec bande de roulement directionnelle comportant une alternance de blocs et rainures incurves | |
EP3261856B1 (fr) | Pneumatique avec bande de roulement directionnelle comportant des blocs incurves pourvus d'incisions | |
EP3261857B1 (fr) | Pneumatique avec bande de roulement directionnelle comportant des blocs incurves pourvus de chanfreins | |
EP0378090B1 (fr) | Bande de roulement pour pneumatique destiné à des roulages hivernaux | |
EP2834089B1 (fr) | Bande de roulement de pneu pour essieu moteur de poids lourd | |
EP3010730B1 (fr) | Pneumatique comportant un marquage a fort contraste | |
CA2569568C (fr) | Bande de roulement pour pneumatique poids lourd | |
EP2925542B1 (fr) | Bande de roulement pour pneumatique neige comportant des incisions et des cavites | |
EP2731811B1 (fr) | Pneu comprenant une bande de roulement porvue d'incisions comprenant des parties larges et des parties etroites | |
EP1499507A1 (fr) | Bande de roulement ayant des elements de sculpture formes d au moins deux melanges de caoutchouc | |
FR2931729A1 (fr) | Pneumatique pour roulage sur glace | |
EP3261855A1 (fr) | Pneumatique avec bande de roulement directionnelle et bi-matiere comportant une alternance de blocs incurves | |
EP2552715B1 (fr) | Bande roulement de pneu comportant des incisions | |
CA2190881A1 (fr) | Bande de roulement pour pneumatiques hivernaux | |
EP3853044B1 (fr) | Bande de roulement de pneumatique comprenant des rainures complexes et des incisions | |
EP1207057A1 (fr) | Sculpture de bande de roulement de pneumatique pour poids lourd | |
EP3658390A1 (fr) | Pneumatique avec bande de roulement comportant une sculpture évolutive avec incisions | |
EP3377340B1 (fr) | Pneumatique comportant un bloc avec une paroi laterale inclinee |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20170927 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN |
|
17Q | First examination report despatched |
Effective date: 20181023 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20190503 |