A tyre of which the internal surface is covered with a sealed layer, which is itself covered with a layer of self-sealing product, comprising a radial carcass reinforcement (60) consisting of reinforcing elements (61) having an elongation at break ARc and a breaking force FRc, laid at a laying pitch PC and coated with a rubber composition, dimensioned so as to satisfy the inequality: (Formula I) in which FRc is expressed in Newtons, Rs is the radial distance between the rotational axis of the tyre and the radially outermost point (360) of the carcass reinforcement, RE is the radial distance between the rotational axis and the axial position where the tyre reaches the maximum axial width of same, and Rt is the radial distance between the rotational axis and the radially innermost point of the bead core, laying pitch Pc and radial distances Rd, RE and Rt being expressed in metres; each sidewall of the tyre further comprising an additional reinforcement (120) consisting of wire reinforcing elements having an elongation at break ARS and a breaking force FRs, laid at a laying pitch Ps and coated with a rubber composition, in which each of the two additional reinforcements is dimensioned such that (Formula II), ARC>=ARS, breaking forces FRs and FRc, and elongations at break ARc andARs being determined on the reinforcing elements before incorporation into the tyre.
Self-sealing tyre comprising an additional sidewall reinforcement
2015-11-04
Patent
Electronic Resource
English
IPC: | B60C VEHICLE TYRES , Fahrzeugreifen |
Self-sealing tyre comprising additional sidewall reinforcement
European Patent Office | 2015
|SELF-SEALING TYRE COMPRISING AN ADDITIONAL SIDEWALL REINFORCEMENT
European Patent Office | 2015
|SELF-SEALING TYRE COMPRISING AN ADDITIONAL SIDEWALL REINFORCEMENT
European Patent Office | 2015
|