Patent ID: 8499808
Filing Date: 2013-08-06
Classification: B60C,Y10T

Abstract:
1. A tire comprising a carcass-type reinforcement structure formed from reinforcing elements anchored on each side of the tire to a bead, the base of which is intended to be mounted on a rim seat, each bead being extended radially outwards by a sidewall, the sidewalls joining, radially outwards, a tread and having, beneath the tread, a crown reinforcement structure comprised of two layers of reinforcing elements called working layers, said reinforcing elements of the working layers being of identical nature, wherein, in a given circumferential plane, the extensional stiffness per unit width of a first working layer measured along the principal direction of the reinforcing elements of said first layer is strictly higher than the extensional stiffness per unit width of a second working layer measured along the principal direction of the reinforcing elements of said second working layer and wherein the second working layer is radially further away from the carcass structure than said first working layer.