Patent ID: 11951784
Assignee: COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A tire comprising a carcass ply connecting two beads via two sidewalls, the carcass ply being surmounted radially toward an outside of the tire by a crown reinforcing zone which is surmounted radially toward the outside of the tire by a tread, the crown reinforcing zone comprising a plurality of reinforcing strips arranged over at least two plies of reinforcing strips, a first ply of reinforcing strips radially on an inside and a second ply of reinforcing strips radially on the outside, and the reinforcing strips being arranged so that they are juxtaposed and at an angle less than or equal to 15° with respect to a circumferential direction,
wherein each reinforcing strip is made up of a laminate of at least three composite layers, each composite layer containing oriented fibers having a tensile modulus less than or equal to 30 GPa, which are parallel to one another and coated in a polymer matrix,
wherein each laminate comprises n interior composite layers, each having fibers of which the angle with the circumferential direction is, in terms of absolute value, less than or equal to 10°, n being a number greater than or equal to 1, and when n>1, interior composite layers being juxtaposed with one another and flanked on each side respectively by m exterior composite layers, and
wherein each exterior composite layer has fibers that make, with the circumferential direction, an angle distinct from 0°, m ranging from 1 to 8 and, when m>1, the angle of the fibers of successive exterior composite layers positioned on a same side of an interior composite layer being identical or different.