Patent ID: 7000662
Filing Date: 2006-02-21
Classification: B60C,Y10T

Abstract:
1. A tire, comprising a crown, two sidewalls and two beads, a carcass reinforcement anchored in each of the beads and a crown reinforcement, wherein the carcass reinforcement comprises at least two circumferential alignments of first reinforcing threads of high elasticity modulus, each circumferential alignment of said first reinforcing threads being, within each bead, bordered axially inwardly and outwardly by windings of second reinforcing threads oriented substantially circumferentially of a modulus greater than or equal to that of said first reinforcing threads, said first reinforcing threads and said windings of second reinforcing threads being separated by a layer of rubber mix of very high elasticity modulus, and wherein, where ΣR 1 is the total of the rigidities of extension of the windings of second reinforcing threads arranged axially inwardly relative to the carcass reinforcement and ΣR E is the total of the rigidities of extension of the windings of second reinforcing threads arranged axially on either side of the carcass reinforcement: