Radial tire having bead stiffener of crossed steel cords

Claim 2

A tire comprising a carcass and a pair of beads each formed with a heel and a toe edge and, in each bead, a single bead ring, said carcass being formed of at least one ply comprising cords arranged in radial planes of the tire and folded outwardly around the bead ring in each bead, further comprising a stiffener of steel cords in each bead arranged on the outside of the carcass, each stiffener comprising at least two layers of crossed cords, extending between a point located radially beyond the end of the carcass and a point located along the base of the bead, and being spaced apart from the carcass and bead ring a minimum distance in the region of the heel of the bead.

Claim 3

A tire according to claim 1 wherein the stiffener in at least one bead is formed of a single folded ply the fold of which is adjacent the toe edge of the bead.

Claim 4

A tire according to claim 2 wherein the cords of the stiffener in said one bead are inclined by an angle of 10* to 30* to the circumferential direction.

Claim 5

A tire according to claim 2 wherein the stiffener in said one bead is folded asymmetrically into two portions, both of said portions extending over the entire portion of the bead that comes into contact with the rim of a wheel on which the tire is mounted and being in spaced-apart relation to the rim-contacting surface of the bead.

Claim 6

A tire comprising a carcass and a pair of beads and, in each bead, a single bead ring, said carcass being formed of a small number of plies, said plies comprising cords arranged in radial planes of the tire, further comprising a stiffener of steel cords in each bead arranged on the outside of the carcass, each stiffener comprising at least two layers of crossed cords and extending between a point located radially beyond the end of the carcass and a point located along the base of the bead wherein the stiffener in at least one bead is formed of two separate plies respectively formed of cords of different diameter and different inclination to the circumferential direction of the tire.

Claim 7

A tire comprising a carcass and a pair of beads and, in each bead, a single bead ring, said carcass being formed of a small number of plies, said plies comprising cords arranged in radial planes of the tire, further comprising a stiffener of steel cords in each bead arranged on the outside of the carcass, each stiffener comprising at least two layers of crossed cords and extending between a point located radially beyond the end of the carcass and a point located along the base of the bead wherein the stiffener in at least one bead is formed of two separate plies respectively formed of cords of different diameter and different inclination to the circumferential direction of the tire.

Claim 8

A tire according to claim 5 wherein one of the two plies is formed of cords which, as compared to the cords of the other ply, are of larger diameter and inclined with respect to the circumferential direction of the tire by a smaller angle.

Claim 9

A tire according to claim 6 wherein the ply formed of the larger-diameter cords is closer to the bead ring than is the other ply, extends only over the portion of the bead that comes into contact with the rim of a wheel on which the tire is mounted, and is in spaced-apart relation to the rim-contacting surface of the bead.