EP3083279A1 - Armature de sommet de pneumatique pour vehicule lourd de type genie civil - Google Patents
Armature de sommet de pneumatique pour vehicule lourd de type genie civilInfo
- Publication number
- EP3083279A1 EP3083279A1 EP14825127.5A EP14825127A EP3083279A1 EP 3083279 A1 EP3083279 A1 EP 3083279A1 EP 14825127 A EP14825127 A EP 14825127A EP 3083279 A1 EP3083279 A1 EP 3083279A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- reinforcement
- additional
- axial
- layer
- equal
- 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- Withdrawn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
- 230000002787 reinforcement Effects 0.000 title claims abstract description 174
- 230000001681 protective effect Effects 0.000 claims abstract description 15
- 239000010410 layer Substances 0.000 claims description 119
- 239000002184 metal Substances 0.000 claims description 57
- 239000011241 protective layer Substances 0.000 claims description 17
- 230000035939 shock Effects 0.000 abstract description 5
- 239000011324 bead Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000001012 protector Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000009827 uniform distribution Methods 0.000 description 2
- 206010001488 Aggression Diseases 0.000 description 1
- 230000005483 Hooke's law Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000016571 aggressive behavior Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000000586 desensitisation Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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
- B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
- B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
- B60C9/28—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers characterised by the belt or breaker dimensions or curvature relative to carcass
-
- 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
- B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
- B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
- B60C9/20—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
- B60C9/2003—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel characterised by the materials of the belt cords
- B60C9/2006—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel characterised by the materials of the belt cords consisting of steel cord plies only
-
- 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
- B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
- B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
- B60C9/20—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
- B60C2009/2012—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel with particular configuration of the belt cords in the respective belt layers
- B60C2009/2016—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel with particular configuration of the belt cords in the respective belt layers comprising cords at an angle of 10 to 30 degrees to the circumferential 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
- B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
- B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
- B60C9/20—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
- B60C2009/2012—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel with particular configuration of the belt cords in the respective belt layers
- B60C2009/2019—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel with particular configuration of the belt cords in the respective belt layers comprising cords at an angle of 30 to 60 degrees to the circumferential 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
- B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
- B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
- B60C9/20—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
- B60C2009/2041—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel with an interrupted belt ply, e.g. using two or more portions of the same ply
-
- 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
- B60C2200/00—Tyres specially adapted for particular applications
- B60C2200/06—Tyres specially adapted for particular applications for heavy duty vehicles
-
- 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
- B60C2200/00—Tyres specially adapted for particular applications
- B60C2200/06—Tyres specially adapted for particular applications for heavy duty vehicles
- B60C2200/065—Tyres specially adapted for particular applications for heavy duty vehicles for construction vehicles
Definitions
- the present invention relates to a radial tire intended to equip a heavy vehicle type civil engineering and, more particularly, the top of such a tire.
- a radial tire for a heavy vehicle of the civil engineering type within the meaning of the European Tire and Rim Technical Organization (ETRTO) standard, is intended to be mounted on a rim at least equal to 25 inches.
- ERRTO European Tire and Rim Technical Organization
- a tire having a geometry of revolution with respect to an axis of rotation the geometry of the tire is generally described in a meridian plane containing the axis of rotation of the tire.
- the radial, axial and circumferential directions respectively designate the directions perpendicular to the axis of rotation of the tire, parallel to the axis of rotation of the tire and perpendicular to the meridian plane.
- a radial tire comprises a reinforcing armature, consisting of a crown reinforcement, radially inner to the tread, and a carcass reinforcement, radially inner to the crown reinforcement.
- the carcass reinforcement of a radial tire for a heavy vehicle of the civil engineering type usually comprises at least one carcass layer consisting of reinforcements generally made of metal, coated with a polymeric material of elastomer type called coating mixture.
- a carcass layer comprises a main part, connecting the two beads together and generally wrapping, in each bead, from the inside to the outside of the tire around a circumferential reinforcing element, most often a metal called a bead wire, to form a reversal.
- the metal reinforcements of a carcass layer are substantially parallel to each other and form, with the circumferential direction, an angle of between 85 ° and 95 °.
- the protective layers constituting the protective armature and radially outermost
- the working layers constituting the armature and radially between the protective frame and the carcass reinforcement.
- the protective armature consisting of at least one protective layer, essentially protects the working layers from mechanical or physico-chemical aggressions, likely to propagate through the tread radially inwardly of the tire.
- the protective reinforcement often comprises two radially superimposed protective layers, formed of elastic metal reinforcements, parallel to one another in each layer and crossed from one layer to the next, forming angles with the circumferential direction. at least 10 ° and not more than 35 °, and preferably at least 15 ° and not more than 30 °.
- the reinforcement of work consisting of at least two working layers, has the function of belting the tire and to give rigidity and handling to the tire. It takes both mechanical loading of the tire, generated by the inflation pressure of the tire and transmitted by the carcass reinforcement, and mechanical stresses of rolling, generated by the rolling of the tire on a floor and transmitted by the tread . It must also withstand oxidation and shocks and perforations, thanks to its intrinsic design and that of the protective frame.
- the reinforcement usually comprises two radially superimposed working layers, formed of non-elastic metal reinforcements, parallel to one another in each layer and crossed from one layer to the next, forming, with the circumferential direction, angles not more than 60 °, and preferably not less than 15 ° and not more than 45 °.
- a metal reinforcement is mechanically characterized by a curve representing the tensile force (N), applied to the metal reinforcement, depending on the relative elongation (in%) of the metal reinforcement, said force-elongation curve. From this force-elongation curve are deduced the tensile mechanical characteristics of the metal reinforcement, such as the structural elongation A s (in%), the total elongation at break A t (in%), the breaking force F m (maximum load in N) and the breaking strength R m (in MPa), these characteristics being measured according to ISO 6892 of 1984.
- an extension module which represents the slope of the line tangent to the force-elongation curve at this point.
- the so-called elastic modulus in extension or Young's modulus the module in extension of the elastic linear part of the force-elongation curve.
- crown reinforcement radially inner to a tread and radially external to a carcass reinforcement
- the crown reinforcement comprising, radially from the outside towards the inside, a protective reinforcement, a reinforcement and an additional reinforcement, the protective reinforcement comprising at least one protective layer comprising elastic metal reinforcements; forming, with the circumferential direction, an angle of at least 10 °,
- the working armature comprising at least two working layers respectively having an axial width and comprising non-elastic metal reinforcements, crossed from one working layer to the next and forming, with the circumferential direction, an angle at most equal to 60 °,
- the width of the axial discontinuity being at least equal to 0.1 times the axial width of the at least one additional layer.
- a crown reinforcement of a reference tire of the state of the art comprising an additional reinforcement comprising at least one additional layer without axial discontinuity, that is to say a continuous additional layer
- a crown reinforcement of a tire according to the invention comprising an additional reinforcement comprising at least one additional layer with an axial discontinuity, that is to say an additional layer discontinuous or interrupted, has a reduced circumferential extension stiffness in its middle portion, centered on the equatorial plane.
- circumferential extension stiffness of the crown reinforcement is meant the extension force to be exerted on a unit width of the crown reinforcement to obtain an elongation of 1 mm of said crown reinforcement. It depends in particular on the module in extension of the metal reinforcements and the angles formed, with the circumferential direction, by said metal reinforcements of the different crown layers.
- the circumferential extension stiffness may be defined at the overall level of the crown reinforcement or at the level of the reinforcements constituting the crown reinforcement, such as the additional reinforcement or the working reinforcement.
- the axial discontinuity causes not only a reduction in the maximum circumferential extension stiffness of the crown reinforcement, but also a displacement of this maximum axially outside the middle portion.
- the distribution of the circumferential extension stiffness according to the width Axial of the crown reinforcement is more homogeneous, which implies that the impact resistance is relatively homogeneous over the entire width of the tread.
- a relatively uniform distribution of the circumferential extension stiffness of the crown reinforcement promotes a more even wear of the tread when the tire is strongly stressed in engine torque or braking, as in use in mines.
- the additional reinforcement comprises at least two additional layers.
- the presence of at least two additional layers makes it possible to have a significant contibution of the reinforcement additional to the circumferential extension stiffness of the crown reinforcement.
- the additional reinforcement comprising at least two additional layers
- the respective axial discontinuities of the at least two additional layers advantageously have respective two-by-two widths.
- the axial limits of the respective discontinuities of the two additional layers are not coincident, which makes it possible to distribute the mechanical stresses in this zone.
- the elastic metal reinforcements of each protective layer preferentially form, with the circumferential direction, an angle at least equal to 15 ° and at most equal to 30 °.
- the non-elastic metal reinforcements of each working layer form, with the circumferential direction, an angle at least equal to 15 ° and at most equal to 45 °.
- Figures 1 and 2 schematic and not shown in scale.
- Figure 1 there is shown a meridian half-section of the top of a tire 1 for a heavy vehicle type civil engineering comprising:
- the crown reinforcement 3 comprising, radially from the outside towards the inside, a protective reinforcement 5, a working reinforcement 6 and an additional reinforcement 7,
- the protective armature comprising two protective layers comprising elastic metal reinforcements forming, with the circumferential direction, an angle of at least 10 °,
- the additional layers (71, 72) have distinct axial widths (L 71 , L 72 ) and comprise axial discontinuities (81, 82) having respective widths (D ls D 2 ) separate
- FIG. 2 represents the respective distributions of the circumferential extension stiffness Rxx of the crown reinforcement for a reference tire of the state of the art, in solid lines, and for a tire according to the invention, in dotted lines.
- the circumferential extension stiffness Rxx expressed in daN / mm, is represented as a function of the curvilinear abscissa S, expressed in mm, of the average line of the crown reinforcement, between the equatorial plane and an axial end of the crown reinforcement, that is to say on a meridian half-section of the tire.
- the reference tire comprises an additional reinforcement comprising two additional layers without axial discontinuity, that is to say two additional continuous layers.
- the tire according to the invention comprises an additional reinforcement comprising two additional layers with an axial discontinuity, that is to say two additional discontinuous or interrupted layers.
- the invention has been more particularly studied in the case of a tire size 40.00R57.
- a protective armor 5 comprising two protective layers (51, 52), formed of elastic metal reinforcements, crossed from one protective layer to the next and forming, with the circumferential direction, an angle equal to 24.degree.
- radially outer protector 52 having an axial width equal to 315 mm and the radially inner protective layer 51 having an axial width equal to 444 mm,
- a working reinforcement 6 comprising two working layers (61, 62), formed of non-elastic metal reinforcements, crossed from one working layer to the next, the radially outer working layer (62) having an axial width L 62 equal to 377 mm and having reinforcements parallel to the reinforcements of the radially inner protective layer 51 and forming, with the circumferential direction, an angle equal to 19 °, and the radially inner working layer 61 having an axial width L 61 equal to 335 mm and having reinforcements forming, with the circumferential direction, an angle equal to 33 °, an additional reinforcement 7 comprising two additional continuous layers (71, 72), formed of non-elastic metal reinforcements, crossed from one additional layer to the next, the additional radially outer layer 72 having an axial width L 72 equal to 282 mm and having reinforcements crossed with respect to the reinforcements of the radially inner working layer 61 and forming, with the circumferential direction, an angle equal to 16 °, and the additional radially inner layer 71 having an axial width equal
- the additional layers (71, 72) comprise axial discontinuities (D ls D 2 ) identical equal to 32 mm. Vehicle crash tests or numerical simulations have shown a significant gain in the impact resistance of the crown of a tire according to the invention with respect to the reference tire.
- the invention is not limited to the characteristics described above and, for example, can be extended to other types of metal reinforcements guaranteeing the extension rigidity of the additional reinforcement referred to, such as, for example, and non-exhaustively, corrugated cables or split cables.
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 |
|---|---|---|---|
| FR1362848A FR3014745B1 (fr) | 2013-12-18 | 2013-12-18 | Armature de sommet de pneumatique pour vehicule lourd de type genie civil |
| PCT/EP2014/078157 WO2015091609A1 (fr) | 2013-12-18 | 2014-12-17 | Armature de sommet de pneumatique pour vehicule lourd de type genie civil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3083279A1 true EP3083279A1 (fr) | 2016-10-26 |
Family
ID=50780560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP14825127.5A Withdrawn EP3083279A1 (fr) | 2013-12-18 | 2014-12-17 | Armature de sommet de pneumatique pour vehicule lourd de type genie civil |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20160318345A1 (fr) |
| EP (1) | EP3083279A1 (fr) |
| JP (1) | JP2017500246A (fr) |
| CN (1) | CN105745091B (fr) |
| BR (1) | BR112016014281A8 (fr) |
| FR (1) | FR3014745B1 (fr) |
| WO (1) | WO2015091609A1 (fr) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019202239A1 (fr) * | 2018-04-17 | 2019-10-24 | Compagnie Generale Des Etablissements Michelin | Armature de protection a couches differenciees pour pneumatique pour vehicule lourd de type genie civil |
| JP7215071B2 (ja) | 2018-10-23 | 2023-01-31 | 横浜ゴム株式会社 | 空気入りタイヤ |
| JP2020066306A (ja) | 2018-10-23 | 2020-04-30 | 横浜ゴム株式会社 | 空気入りタイヤ |
| FR3099087B1 (fr) * | 2019-07-23 | 2021-07-02 | Michelin & Cie | Pneumatique pour vehicule lourd de type genie civil avec une armature sommet simplifiee |
| FR3106529B1 (fr) * | 2020-01-29 | 2022-01-07 | Michelin & Cie | architecture optimisée de pneumatique de type poids-lourd, agricole ou génie civil |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL130257C (fr) * | 1963-07-23 | Michelin & Cie | ||
| US3335777A (en) * | 1965-10-08 | 1967-08-15 | Gen Tire & Rubber Co | Breaker arrangement for pneumatic tires |
| FR2128158B1 (fr) * | 1971-03-08 | 1974-02-22 | Michelin & Cie | |
| JPS6144006A (ja) * | 1984-08-07 | 1986-03-03 | Bridgestone Corp | ラジアルタイヤのベルト構造 |
| JPH0367703A (ja) * | 1989-08-07 | 1991-03-22 | Bridgestone Corp | 重荷重用空気入リラジアルタイヤ |
| LU87862A1 (fr) * | 1990-12-18 | 1991-05-07 | Goodyear Tire & Rubber | Bandage pneumatique |
| JP4000214B2 (ja) * | 1998-02-06 | 2007-10-31 | 株式会社ブリヂストン | 重荷重用空気入りラジアル・タイヤ |
| FR2836655B1 (fr) * | 2002-03-04 | 2005-02-11 | Michelin Soc Tech | Armature de sommet avec nappe d'epaule |
| JP4373171B2 (ja) * | 2003-10-02 | 2009-11-25 | 株式会社ブリヂストン | 重荷重用空気入りラジアルタイヤ |
| US7267149B2 (en) * | 2003-12-22 | 2007-09-11 | The Goodyear Tire & Rubber Company | Pneumatic tire with improved crown durability |
| JP4628080B2 (ja) * | 2004-12-10 | 2011-02-09 | 株式会社ブリヂストン | 重荷重用空気入りラジアルタイヤ |
| JP4707105B2 (ja) * | 2005-11-15 | 2011-06-22 | 株式会社ブリヂストン | 空気入りタイヤ |
| FR2910379B1 (fr) * | 2006-12-21 | 2009-03-06 | Michelin Soc Tech | Pneumatique pour vehicule lourd. |
| BRPI0721789B1 (pt) * | 2007-06-22 | 2019-04-09 | Pirelli Tyre S.P.A | Pneu |
| JP2010120431A (ja) * | 2008-11-17 | 2010-06-03 | Toyo Tire & Rubber Co Ltd | 重荷重用空気入りタイヤ |
| JP5772254B2 (ja) * | 2011-06-07 | 2015-09-02 | 横浜ゴム株式会社 | 空気入りタイヤ |
-
2013
- 2013-12-18 FR FR1362848A patent/FR3014745B1/fr not_active Expired - Fee Related
-
2014
- 2014-12-17 BR BR112016014281A patent/BR112016014281A8/pt not_active IP Right Cessation
- 2014-12-17 CN CN201480062776.4A patent/CN105745091B/zh not_active Expired - Fee Related
- 2014-12-17 EP EP14825127.5A patent/EP3083279A1/fr not_active Withdrawn
- 2014-12-17 US US15/104,877 patent/US20160318345A1/en not_active Abandoned
- 2014-12-17 JP JP2016541559A patent/JP2017500246A/ja active Pending
- 2014-12-17 WO PCT/EP2014/078157 patent/WO2015091609A1/fr not_active Ceased
Non-Patent Citations (2)
| Title |
|---|
| None * |
| See also references of WO2015091609A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| US20160318345A1 (en) | 2016-11-03 |
| FR3014745B1 (fr) | 2017-02-10 |
| JP2017500246A (ja) | 2017-01-05 |
| BR112016014281A8 (pt) | 2018-01-02 |
| CN105745091A (zh) | 2016-07-06 |
| BR112016014281A2 (pt) | 2017-09-26 |
| FR3014745A1 (fr) | 2015-06-19 |
| CN105745091B (zh) | 2018-06-01 |
| WO2015091609A1 (fr) | 2015-06-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2900486B1 (fr) | Pneumatique pour vehicule lourd de type genie civil | |
| EP2934913B1 (fr) | Sommet de pneumatique pour vehicule lourd de type genie civil | |
| EP3083279A1 (fr) | Armature de sommet de pneumatique pour vehicule lourd de type genie civil | |
| EP3383667A1 (fr) | Armature de sommet de pneumatique pour véhicule lourd de type génie civil | |
| FR2976222A1 (fr) | Bourrelet de pneumatique pour vehicule lourd de type genie civil | |
| EP3849825A1 (fr) | Armature de frettage d'un pneumatique pour vehicule lourd de type genie civil | |
| WO2019058053A1 (fr) | Armature de sommet de pneumatique pour vehicule lourd de type genie civil | |
| WO2019202239A1 (fr) | Armature de protection a couches differenciees pour pneumatique pour vehicule lourd de type genie civil | |
| EP2934912B1 (fr) | Sommet de pneumatique pour vehicule lourd de type genie civil | |
| WO2020229543A1 (fr) | Pneumatique pour vehicule lourd de type genie civil dote d'une armature de protection a trois couches differenciees | |
| FR3020311A1 (fr) | Pneumatique comprenant une nappe de carcasse comprenant des elements de renfort de carcasse gaines | |
| EP3297856B1 (fr) | Pneumatique ayant une plus grande résistance au décoincement | |
| WO2019202240A1 (fr) | Armature de protection de pneumatique pour vehicule lourd de type genie civil | |
| WO2020053070A1 (fr) | Armature de frettage bi-module de pneumatique pour vehicule lourd de type genie civil | |
| WO2022129741A1 (fr) | Architecture optimisee d'un pneumatique de type genie civil | |
| EP4058303B1 (fr) | Armature de sommet de pneumatique pour vehicule lourd de genie civil | |
| FR3112717A1 (fr) | architecture optimisée de pneumatique de génie civil | |
| EP3551472B1 (fr) | Pneumatique comportant une armature de sommet allegee | |
| EP3898277A1 (fr) | Armature de carcasse d'un pneumatique pour vehicule lourd de type genie civil | |
| EP3551473B1 (fr) | Pneumatique comportant une armature de sommet allegee | |
| FR3143436A1 (fr) | architecture optimisée de pneumatique génie civil | |
| WO2023247256A1 (fr) | Architecture optimisée de pneumatique de type génie civil | |
| FR3136701A1 (fr) | architecture optimisée de pneumatique de type poids-lourd ou génie civil | |
| WO2021014065A1 (fr) | Pneumatique pour vehicule lourd de type genie civil avec une armature sommet simplifiee |
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: 20160718 |
|
| 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 |
|
| 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 |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN |
|
| GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
| INTG | Intention to grant announced |
Effective date: 20190318 |
|
| 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: 20190730 |