Tire crown reinforcement with specified rubber decoupling layers
AssigneeMichelin Recherche et Technique S.A.
InventorsPedro Costa Pereira, Yves Herbelleau
Life of this patent
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Abstract
A tire having a crown, two sidewalls and two beads, a carcass reinforcement anchored in the two tire beads and a belt reinforcement, the belt reinforcement including at least two superposed reinforcing plies formed by cords parallel in each ply and criss-crossed from one to the other forming with the circumferential direction angles (α, β) ranging between 10° and 70° and characterized in that, there is provided, between the two superposed reinforcing plies, at least two axially adjacent rubber decoupling layers with different mechanical properties and in that each of the two rubber decoupling layers is in contact with the cords of the two superposed reinforcing layers.
Claims4
A tire comprising a crown, two sidewalls and two beads, a carcass reinforcement anchored in the two beads and a belt reinforcement, said carcass reinforcement comprising at least one reinforcing ply made up of parallel cords forming an angles roughly equal to 90° with the circumferential direction and said belt reinforcement comprising at least one reinforcing ply made up of parallel cords forming angles α with the circumferential direction ranging between 10° and 70°, characterized in that, between said crown reinforcing ply and said carcass reinforcing ply, at least two rubber decoupling layers of different mechanical properties are placed axially adjacent, and in that each of said two rubber decoupling layers is in contact with the cords of said two superposed reinforcing plies.
Dependencies are inferred from the claim text.