Patent ID: 6834699
Filing Date: 2004-12-28
Classification: B60C,Y10T

Abstract:
A tire designed to carry heavy loads, comprising at least one radial carcass reinforcement formed of at least one ply of inelastic reinforcement elements anchored in each bead to a bead wire and forming a turn-up whose end is located a distance HRNC away from the base of the bead, each bead being reinforced by at least two additional reinforcement armatures comprising at least one first bead reinforcing armature and at least one second bead reinforcement armature, the at least one first bead reinforcement armature formed of at least one ply of radial reinforcement elements wrapped around the anchoring bead wire of the carcass reinforcement outside the said carcass reinforcement, and forming two parts such that the radially upper end of the axially outer part is radially located a distance HLE from the base of the bead equal to at least 65% of the distance HRNC, the at least one second bead reinforcement armature formed of textile elements and being arranged axially inside a non turned up part of the carcass reinforcements wherein when viewed in median section, the second bead reinforcement armature, which is not wrapped around the anchoring bead wire, is formed of two plies of reinforcement elements parallel to one another within each ply, crossed from one ply to the next and forming with the circumferential direction an angle of 45Â°, and having a radially upper end closer to the rotation axis than is the upper end of the axially inner part of the at least one first bead reinforcement armature and a radially lower end close to the base of the bead.