WO2019058053A1 - 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 civil Download PDFInfo
- Publication number
- WO2019058053A1 WO2019058053A1 PCT/FR2018/052286 FR2018052286W WO2019058053A1 WO 2019058053 A1 WO2019058053 A1 WO 2019058053A1 FR 2018052286 W FR2018052286 W FR 2018052286W WO 2019058053 A1 WO2019058053 A1 WO 2019058053A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- reinforcement
- equal
- heavy vehicle
- layer
- protective
- Prior art date
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
- B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
- B60C9/0007—Reinforcements made of metallic elements, e.g. cords, yarns, filaments or fibres made from metal
-
- 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
-
- 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
- B60C2009/0071—Reinforcements or ply arrangement of pneumatic tyres characterised by special physical properties of the reinforcements
- B60C2009/0078—Modulus
-
- 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
- B60C2009/0071—Reinforcements or ply arrangement of pneumatic tyres characterised by special physical properties of the reinforcements
- B60C2009/0085—Tensile strength
-
- 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
- B60C2009/0071—Reinforcements or ply arrangement of pneumatic tyres characterised by special physical properties of the reinforcements
- B60C2009/0092—Twist structure
-
- 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
- B60C2009/2074—Physical properties or dimension of the belt cord
- B60C2009/2077—Diameters of the cords; Linear density thereof
-
- 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
- B60C2009/2074—Physical properties or dimension of the belt cord
- B60C2009/2083—Density in width 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
- B60C2009/2074—Physical properties or dimension of the belt cord
- B60C2009/209—Tensile strength
-
- 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 crown reinforcement of such a tire.
- a radial tire for heavy vehicle type civil engineering within the meaning of the standard of the European Tire and Rim Technical Organization or ETRTO, is intended to be mounted on a rim whose diameter is at least equal to 25 inches.
- the invention is described for a radial tire of large size, intended to be mounted on a dumper, vehicle for transporting materials extracted from quarries or surface mines, via a rim with a diameter of at least 49 inches and up to 57 inches or 63 inches.
- 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.
- the circumferential direction is tangent to the circumference of the tire.
- radially inner means “closer”, respectively “further from the axis of rotation of the tire”.
- axially inner means “closer” or “furthest from the equatorial plane of the tire” respectively, the equatorial plane of the tire being the plane passing through the middle of the running surface and perpendicular to the axis of rotation.
- a tire comprises a tread intended to come into contact with a ground via a rolling surface, the two axial ends of which are connected by means of two sidewalls with two beads. providing the mechanical connection between the tire and the rim on which it is intended to be mounted.
- a radial tire further comprises a reinforcing reinforcement, 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 comprising reinforcements generally made of metal, coated with an elastomeric or elastomeric type polymeric material called a coating mixture.
- a carcass layer comprises a main portion, connecting the two beads together and generally wound 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 crown reinforcement of a radial tire for a heavy vehicle of the civil engineering type comprises a superposition of crown layers extending circumferentially, radially outwardly of the carcass reinforcement.
- Each crown layer consists of generally metallic reinforcements parallel to each other and coated with an elastomeric-type polymeric material or coating mixture.
- the protective armor comprising at least one protective layer, essentially protects the working layers of mechanical or physicochemical attacks, likely to propagate through the tread radially inwardly of the tire.
- the protective armor often comprises two radially superimposed protective layers, formed of elastic metal reinforcements, parallel to each other in each layer and crossed from one layer to the next, forming, with the circumferential direction, angles at least equal to 10 ° and at most equal to 35 °, and preferably at least 15 ° and at least more equal to 30 °.
- the reinforcement comprising at least two working layers, has the function of belt the tire and give it rigidity and handling. 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 superposed working layers, formed of non-extensible 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 °.
- the hooping reinforcement whose function is to take up at least part of the mechanical loading of the tire, improves the endurance of the crown reinforcement by stiffening the crown reinforcement.
- the hooping frame can also be radially positioned between two working layers of the working frame, or radially outside the working frame.
- the hooping reinforcement usually comprises two radially superimposed hooping layers, formed of metal reinforcements, parallel to each other in each layer and crossed from one layer to the next, forming, with the circumferential direction, angles at more than 10 °, and preferably at least 6 ° and not more than 8 °.
- a metal reinforcement is mechanically characterized by a curve representing the tensile force (in N), applied to the metallic reinforcement, according to its relative elongation (in%), called the force-elongation curve.
- the structural elongation As results from the relative positioning of the constituent metal son of the metal reinforcement under a low tensile force.
- the elastic elongation Ae results from the elasticity of the metal of the metal wires, constituting the metal reinforcement, taken individually, the behavior of the metal according to a Hooke law.
- the plastic elongation Ap results from the plasticity, that is to say the irreversible deformation, beyond the elastic limit, of the metal of these individual metal wires.
- an extension module expressed in GPa, which represents the slope of the line tangent to the force-elongation curve at this point.
- GPa the so-called elastic modulus in extension or Young's modulus
- metal reinforcements there are usually elastic metal reinforcements, such as those used in the protective layers, and non-extensible or inextensible metal reinforcements, such as those used in the working layers.
- An elastic metal reinforcement is characterized by a structural elongation As at least equal to 1% and a total elongation at break At at least equal to 4%.
- an elastic metal reinforcement has an elastic modulus in extension at most equal to 150 GPa, and usually between 40 GPa and 150 GPa.
- a non-extensible metal reinforcement is characterized by a total elongation At, under a tensile force equal to 10% of the breaking force Fm, at most equal to 0.2%.
- a non-extensible metal reinforcement has an elastic modulus in extension usually between 150 GPa and 200 GPa.
- the inventors When driving on more or less sharp stones present on the tracks on which the dumpers circulate, the inventors have observed that the tread of a tire is frequently subjected to cuts likely to cross radially to the inside up to the protective frame. These cuts in the tread generate localized corrosion of the metal reinforcements of the radially outer protective layer, which is able to propagate in said protective layer, to generate detachments of the tread and to cause tearing of portions of the tread rolling.
- the inventors have set themselves the objective of increasing the resistance to attack at the top of a radial tire for a heavy vehicle of the civil engineering type, such as cuts in the tread, by a suitable choice of the design parameters. protective layers.
- a tire for a heavy vehicle of the civil engineering type comprising a 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 and a working reinforcement
- the protective armature comprising at least one protective layer comprising metal reinforcements embedded in an elastomeric material, parallel to one another and forming an angle at least equal to 10 °, with a circumferential direction tangent to the circumference of the tire,
- the protective layer metal reinforcements each having a section of diameter D and being two by two spaced apart by a pitch P at least equal to the diameter D,
- the protective layer metal reinforcements being elastic and having a breaking strength Fm
- the ratio A (PD) / D being at least equal to 0.25 and at most equal to 1
- the ratio B (Fm / P) / 1000 being at least equal to 1.1 and at most equal to 2
- Fm being expressed in N and P being expressed in mm
- the protective layer elastic metal reinforcements being multi-structure cables of IxN structure comprising a single layer of N helically wound strands, each strand comprising an inner layer of M helically wound inner wires and an outer layer of K outer coiled wires. in a helix around the inner layer.
- the diameter D of the section of a reinforcement is the diameter of the circle circumscribed in the section of the reinforcement, measured in a meridian section of the tire, that is to say a tire section by a meridian plane.
- the pitch P between two consecutive reinforcements is the distance measured between the centers of the circles circumscribed to the respective sections of two consecutive reinforcements, measured in a meridian section of the tire.
- the distance (P-D) is, therefore, the distance between two consecutive reinforcements, or, more precisely, the distance between the circles circumscribed to the respective sections of two consecutive reinforcements.
- the distance (P-D) is called interrenorth distance.
- the distance (P-D) corresponds to the portion of elastomeric material between two consecutive reinforcements, sometimes called rubber bridge.
- This second condition aims at not having a distance. between two consecutive reinforcements too high. Beyond this value, the risk of having cracks crossing the protective reinforcement, between two consecutive reinforcements, radially inwards up to the frame of work is high. In addition, the density of reinforcements then becomes too low to guarantee the breaking force required for a protective layer.
- the ratio Fm / P represents the breaking force of a unitary portion of protective layer, comprising metal reinforcements having a breaking force Fm and being spaced apart by a pitch P. If Fm is expressed in N and P in mm, the ratio Fm / P in N / mm is the breaking force of a unitary portion of protective layer of width equal to 1 mm.
- the ratio B (Fm / P) / 1000, equal to the ratio Fm / P divided by 1000, is therefore a coefficient of breaking strength of a unit portion of protective layer. Such a ratio B is defined conventionally so as to have ratios A and B of the same order of magnitude.
- a ratio B (Fm / P) / 1000, at least equal to 1.1 and at most equal to 2, means that the breaking force of a unit portion of the protective layer must be between 1100 N / mm. and 2000 N / mm.
- the inventors have observed that the propagation of corrosion of the metal reinforcements of the radially outer protective layer, resulting from the cracking of the tread after cuts, is even more important than the inter-reinforcement distance. is close to 0, that is to say that these reinforcements are almost contiguous. To limit the propagation of corrosion, it is therefore advantageous to increase the inter-reinforcement distance.
- Another advantage of an increased inter-reinforcement distance is to have a wider rubber bridge, thus to improve the connection between the tread and the radially outer protective layer and, consequently, to reduce the risk of cracking at this interface and the risk of tearing tread portions.
- the inter-reinforcement distance must not be too important not to increase the risk of propagation of the through-cracks, initiated in the tread, through the protective reinforcement to the reinforcement of work, and correspondingly, so as not to increase the risk of perforation or cutting of the working layers.
- an increased inter-reinforcement distance implies a reduction in the density of reinforcements, and therefore a decrease in the breaking force of a unitary portion. protective layer.
- the protective layer elastic metal reinforcements are multi-structure cables of IxN structure comprising a single layer of N helically wound strands, each strand comprising an inner layer of M internal helical wires wound and a outer layer of K outer threads spirally wound around the inner layer.
- the diameter D is at least 3 mm
- the breaking force Fm is at least 5900 N
- the pitch P is at least 4 mm.
- a preferred example of a multistrand cable for a protective layer according to the invention has the structure 4 * (3 + 8) .35 or 44.35.
- the protective layer of metal reinforcements form, with the circumferential direction, an angle at least equal to 15 ° and at most equal to 35 °.
- the protective reinforcement comprises two protective layers whose respective metal reinforcements are crossed from one protective layer to the next.
- the working reinforcement comprises two working layers, the respective non-extensible metallic reinforcements, embedded in an elastomeric material, parallel to each other and forming, with the circumferential direction, an angle at least equal to 15 ° and more equal to 45 °, are crossed from one working layer to the next.
- the crown reinforcement advantageously comprises, radially inside the working frame, a hooping reinforcement comprising two hooping layers whose respective metal reinforcements, embedded in an elastomeric material, parallel to each other and forming, with the circumferential direction, an angle at most equal to 10 °, are crossed from one hooping layer to the next.
- FIG. 1 meridian section of a tire-type heavy vehicle tire top according to the invention
- FIG. 2 meridian section of a protective layer portion according to the invention
- FIG. 1 there is shown a meridian section of a tire 1 for a heavy vehicle civil engineering type 40.00R57 comprising a crown reinforcement 3, radially inner to a tread 2 and radially external to a frame 4.
- the crown reinforcement 3 comprises, radially from the outside towards the inside, a protective reinforcement 5, a working reinforcement 6 and a hooping reinforcement 7.
- the protective reinforcement 5 comprises two layers of protection device (51, 52) comprising metal reinforcements embedded in an elastomeric material, parallel to one another and forming an angle equal to 24 °, with a circumferential direction XX 'tangent to the circumference of the tire, the respective metal reinforcements of each protective layer being crossed from one layer of protection to the next.
- the working reinforcement 6 comprises two working layers (61, 62), the respective non-extensible metal reinforcements, embedded in an elastomeric material, parallel to each other and forming, with the circumferential direction XX ', angles respectively equal to 33 °. and 19 °, are crossed from one working layer to the next.
- the hooping frame 7 comprises two hooping layers (71, 72) whose respective metal reinforcements, coated in an elastomeric material, parallel to each other and forming, with the circumferential direction XX ', an angle of between 6 ° and 8 °, are crossed from one hooping layer to the next.
- FIG. 2 represents a meridian section of a protective layer portion (51, 52).
- the protective layer metal reinforcements (51, 52) each have a diameter section D and are two by two spaced apart by a pitch P at least equal to the diameter D.
- the inter-reinforcement distance between two consecutive reinforcements is P-D.
- the protective layer metal reinforcements (51, 52) are elastic and have a breaking strength Fm.
- Two types of protective layer metal reinforcements (51, 52) have been more precisely studied: a structure 52.26 multitoron cable and a structure 44.35 multi-structure cable.
- pitch values P between 4.8 mm and 6.5 mm ensure compliance with the essential features of the invention. .
- the inventors have made comparative analyzes of the state of the interface between the protective reinforcement and the tread, for tires according to the invention and for tires of the state of the art having rolled into customers. They were able to observe that the extent of the corrosion zones, in particular perpendicularly to the elastic metal layers of the protective layer, was significantly lower for the tires according to the invention compared to the tires of the state of the art. where a significant gain in terms of resistance to attacks from the summit.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
- Ropes Or Cables (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR112020004931-0A BR112020004931A2 (pt) | 2017-09-22 | 2018-09-19 | cinta de topo de pneu para veículo pesado do tipo para construção civil |
US16/648,969 US20200282773A1 (en) | 2017-09-22 | 2018-09-19 | Crown Reinforcement for a Tire for a Heavy Vehicle of Construction Plant Type |
CN201880060910.5A CN111132854B (zh) | 2017-09-22 | 2018-09-19 | 用于施工场地类型的重型车辆的轮胎的胎冠增强件 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1758770 | 2017-09-22 | ||
FR1758770 | 2017-09-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2019058053A1 true WO2019058053A1 (fr) | 2019-03-28 |
Family
ID=60450846
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2018/052286 WO2019058053A1 (fr) | 2017-09-22 | 2018-09-19 | Armature de sommet de pneumatique pour vehicule lourd de type genie civil |
Country Status (4)
Country | Link |
---|---|
US (1) | US20200282773A1 (fr) |
CN (1) | CN111132854B (fr) |
BR (1) | BR112020004931A2 (fr) |
WO (1) | WO2019058053A1 (fr) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020229543A1 (fr) * | 2019-05-14 | 2020-11-19 | Compagnie Generale Des Etablissements Michelin | Pneumatique pour vehicule lourd de type genie civil dote d'une armature de protection a trois couches differenciees |
FR3106530A1 (fr) * | 2020-01-29 | 2021-07-30 | Compagnie Generale Des Etablissements Michelin | architecture optimisée de pneumatique de type poids-lourd, agricole ou génie civil |
FR3106529A1 (fr) * | 2020-01-29 | 2021-07-30 | Compagnie Generale Des Etablissements Michelin | architecture optimisée de pneumatique de type poids-lourd, agricole ou génie civil |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019202240A1 (fr) * | 2018-04-17 | 2019-10-24 | Compagnie Generale Des Etablissements Michelin | Armature de protection de pneumatique pour vehicule lourd de type genie civil |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5843583A (en) | 1996-02-15 | 1998-12-01 | N.V. Bekaert S.A. | Cord with high non-structural elongation |
WO2005014925A1 (fr) | 2003-07-22 | 2005-02-17 | N.V. Bekaert S.A. | Corde hybride a fort coefficient d'elongation |
WO2007090603A1 (fr) | 2006-02-09 | 2007-08-16 | Societe De Technologie Michelin | Cable composite elastique pour pneumatique |
WO2011134900A1 (fr) * | 2010-04-28 | 2011-11-03 | Societe De Technologie Michelin | Câble métallique à torons multiples élastique à haute perméabilité |
WO2015162174A1 (fr) * | 2014-04-22 | 2015-10-29 | Compagnie Generale Des Etablissements Michelin | Pneumatique pour véhicule industriel lourd |
WO2015162176A1 (fr) * | 2014-04-22 | 2015-10-29 | Compagnie Generale Des Etablissements Michelin | Pneumatique pour véhicule de génie civil |
WO2017103478A1 (fr) * | 2015-12-15 | 2017-06-22 | Compagnie Générale Des Établissements Michelin | Sommet de pneumatique pour véhicule lourd de type génie civil |
WO2018091837A1 (fr) * | 2016-11-21 | 2018-05-24 | Compagnie Generale Des Etablissements Michelin | Sommet de pneumatique pour vehicule lourd de type genie civil |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
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NL6717027A (fr) * | 1967-02-08 | 1968-08-09 | ||
JPH11200264A (ja) * | 1998-01-20 | 1999-07-27 | Bridgestone Metalpha Kk | ゴム物品補強用スチールコードおよび空気入りタイヤ |
FR2947575B1 (fr) * | 2009-07-03 | 2011-08-19 | Michelin Soc Tech | Cable multitorons dont les torons elementaires sont des cables a deux couches gommes in situ. |
FR3044593B1 (fr) * | 2015-12-04 | 2017-12-08 | Michelin & Cie | Armature de sommet de pneumatique pour vehicule lourd de type genie civil |
-
2018
- 2018-09-19 US US16/648,969 patent/US20200282773A1/en not_active Abandoned
- 2018-09-19 CN CN201880060910.5A patent/CN111132854B/zh active Active
- 2018-09-19 BR BR112020004931-0A patent/BR112020004931A2/pt not_active Application Discontinuation
- 2018-09-19 WO PCT/FR2018/052286 patent/WO2019058053A1/fr active Application Filing
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5843583A (en) | 1996-02-15 | 1998-12-01 | N.V. Bekaert S.A. | Cord with high non-structural elongation |
WO2005014925A1 (fr) | 2003-07-22 | 2005-02-17 | N.V. Bekaert S.A. | Corde hybride a fort coefficient d'elongation |
WO2007090603A1 (fr) | 2006-02-09 | 2007-08-16 | Societe De Technologie Michelin | Cable composite elastique pour pneumatique |
WO2011134900A1 (fr) * | 2010-04-28 | 2011-11-03 | Societe De Technologie Michelin | Câble métallique à torons multiples élastique à haute perméabilité |
WO2015162174A1 (fr) * | 2014-04-22 | 2015-10-29 | Compagnie Generale Des Etablissements Michelin | Pneumatique pour véhicule industriel lourd |
WO2015162176A1 (fr) * | 2014-04-22 | 2015-10-29 | Compagnie Generale Des Etablissements Michelin | Pneumatique pour véhicule de génie civil |
WO2017103478A1 (fr) * | 2015-12-15 | 2017-06-22 | Compagnie Générale Des Établissements Michelin | Sommet de pneumatique pour véhicule lourd de type génie civil |
WO2018091837A1 (fr) * | 2016-11-21 | 2018-05-24 | Compagnie Generale Des Etablissements Michelin | Sommet de pneumatique pour vehicule lourd de type genie civil |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2020229543A1 (fr) * | 2019-05-14 | 2020-11-19 | Compagnie Generale Des Etablissements Michelin | Pneumatique pour vehicule lourd de type genie civil dote d'une armature de protection a trois couches differenciees |
US11878557B2 (en) | 2019-05-14 | 2024-01-23 | Compagnie Generale Des Etablissements Michelin | Tire for a heavy-duty vehicle of construction plant type, provided with a protective reinforcement having three differentiated layers |
FR3106530A1 (fr) * | 2020-01-29 | 2021-07-30 | Compagnie Generale Des Etablissements Michelin | architecture optimisée de pneumatique de type poids-lourd, agricole ou génie civil |
FR3106529A1 (fr) * | 2020-01-29 | 2021-07-30 | Compagnie Generale Des Etablissements Michelin | architecture optimisée de pneumatique de type poids-lourd, agricole ou génie civil |
WO2021152231A1 (fr) | 2020-01-29 | 2021-08-05 | Compagnie Generale Des Etablissements Michelin | Architecture optimisée de pneumatique de type poids-lourd, agricole ou génie civil |
WO2021152232A1 (fr) * | 2020-01-29 | 2021-08-05 | Compagnie Generale Des Etablissements Michelin | Architecture optimisée de pneumatique de type poids-lourd, agricole ou génie civil |
CN115003522A (zh) * | 2020-01-29 | 2022-09-02 | 米其林集团总公司 | 农业或土木工程类型的重型轮胎的优化结构 |
CN115003522B (zh) * | 2020-01-29 | 2023-08-29 | 米其林集团总公司 | 农业或土木工程类型的重型轮胎的优化结构 |
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BR112020004931A2 (pt) | 2020-09-15 |
CN111132854A (zh) | 2020-05-08 |
CN111132854B (zh) | 2021-10-22 |
US20200282773A1 (en) | 2020-09-10 |
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