Tire with an improved interface
AssigneeCompagnie Generale Des Etablissements Michelin
InventorsSABRINA SCHMITT, AYMERIC BONNET
Life of this patent
Estimating the term…
Abstract
The tire for a passenger vehicle comprises a reinforced layer (36) and a stiffening layer (44) extending radially from the beads (32) into the sidewalls (30). The stiffening layer (44) is arranged axially between the reinforced layer (36) and the external layer (42) of the sidewall (30), in contact with the reinforced layer (36) and in contact with a part of the external layer (42) of the sidewall (30). The ratio R of the modulus MA100R at 100% elongation of the polymeric matrix of the reinforced layer (36) to the modulus MA10B at 10% elongation of the stiffening layer (44) is such that R× 1000≥(0.011×MA10B×MA10B)−1.71×MA10B+86.70.
Claims14
-13. (canceled)
A tire for a passenger vehicle, comprising:
- a crown, two beads, two sidewalls connecting each bead to the crown, each sidewall comprising an external layer of the sidewall bearing an external surface of the sidewall;
- a reinforced layer extending radially in at least one of the sidewalls and comprising filamentary reinforcing elements embedded in a polymeric matrix;
- a stiffening layer extending radially from one of the beads into the sidewall adjacent to the one of the beads, the stiffening layer being arranged, in the sidewall:
- axially between the reinforced layer and the external layer of the sidewall, and
- in contact with at least a part of the reinforced layer and in contact with at least a part of the external layer of the sidewall,
- wherein a ratio R of a modulus MA100R at 100% elongation of the polymeric matrix of the reinforced layer to a modulus MA10B at 10% elongation of the stiffening layer is such that R×1000≥(0.011×MA10B×MA10B)−1.71×MA10B+86.70.
Dependencies are inferred from the claim text.