Radial tire with high angle, low elongation plies and low angle, high elongation plies in belt

摘要

A tire, in particular for heavy and very heavy off-road vehicles, with carcass armor formed by at least a strip of radial wires or cables anchored to at least one triangle on each bead and with crown armor arranged radially on the outside of the carcass reinforcement and formed by at least three overlapping strips of parallel wires or cables in each strip and crossed from one strip to the next, forming with the tire longitudinal direction different angles, less than 90º, having the carcass reinforcement an equatorial zone with little ribs spliced on either side to the flanks by a zone of high curvature, characterized in that the crown reinforcement is formed, on the one hand, by two superimposed bands of wires or cables with very little elongation, parallel in each belt and crossed from one belt to the next, forming angles between 50 and 70º with the longitudinal direction, and on the other hand you, by at least one strip of elastic wires or cables, parallel to each other in said strip and forming an angle between 5 and 15º with the longitudinal direction, said strip having a width at most equal to that of the tread, at least one of the two strings of very low elongation cables or strands being arranged radially inside the said strip of elastic strands or cables. (Machine-translation by Google Translate, not legally binding)