Patent ID: 8839833
Filing Date: 2014-09-23
Classification: B60C,Y10T

Abstract:
1. A tire for a heavy goods vehicle comprising two beads adapted to come into contact with a rim and connected respectively via two sidewalls to a tread strip, the tire comprising: a carcass reinforcement comprising a plurality of reinforcing elements and a main part wrapped within each of the two beads around a bead wire core to form a turned-back portion, wherein each of the two beads comprises an additional reinforcement and a filler profiled element extending said bead wire core radially outwards, wherein said filler profiled element has, in any meridian plane, three exterior sides including a radially inner side, an axially inner side and an axially outer side, with said axially inner and outer sides converging at a radially outermost point, wherein said filler profiled element is formed of a stack in the radial direction of at least three polymer materials in contact along a contact surface that intersects any meridian plane along a meridian line, wherein an axially outermost end of a meridian line of any contact surface for contact between any two of said three polymer materials of said filler profiled element is said radially outermost point on said meridian line, wherein an axially innermost end of said meridian line is a radially innermost point of said meridian line, wherein said meridian line is at least partially radially on an outside of a straight line that passes through said axially innermost end and said axially outermost end of said meridian line, and wherein a nominal secant elastic modulus at 10% elongation of a polymer material of said three polymer materials of said filler profiled element in contact with said bead wire core is greater than a nominal secant elastic modulus at 10% elongation of any other polymer material of said three polymer materials of said filler profiled element.