Patent ID: 9649891
Date: 2017-05-16
CPC Classifications: B60C,Y10T

Claim:
1. A tire comprising: two beads shaped and positioned to come into contact with a standard mounting rim, each bead comprising at least one annular reinforcing structure; two sidewalls extending from the beads radially outward, the two sidewalls joining in a crown comprising a crown reinforcement, surmounted by a tread; and a carcass reinforcement extending from the beads through the sidewalls to the crown, the carcass reinforcement comprising a plurality of carcass reinforcing elements and being anchored in the two beads by a turn-up around the at least one annular reinforcing structure in such a way as to form in each bead a main portion and a wrapped-around portion, each wrapped-around portion extending radially outward to an end located at a radial distance DRE from a radially innermost point of the at least one annular reinforcing structure of the bead, the radial distance DRE being greater than or equal to 5% and less than or equal to 20% of a radial height H of the tire, wherein the radial height H of the tire is a radial distance from the radially innermost point of the at least one annular reinforcing structure of the bead to a radially outermost point of the tread when the tire is mounted on the standard mounting rim and is inflated to a working pressure; wherein each bead comprises a bead filler formed from a rubber compound, the bead filler being located, at least partially, radially outside of the at least one annular reinforcing structure and at least partially between the main portion and the wrapped-around portion of the carcass reinforcement, the bead filler extending radially up to a radial distance DBE from the radially innermost point of the at least one annular reinforcing structure of the bead, the radial distance DBE being less than or equal to 10% of the radial height H of the tire, wherein a sidewall of the tire at any radial height less than or equal to 40% of the radial height H of the tire also comprises a single rigidifying reinforcement formed from a plurality of metal reinforcing elements oriented along an angle less than or equal to 10 degrees relative to a circumferential direction of the tire, said rigidifying reinforcement being positioned such that the distance DAE between the radially innermost point of the at least one annular reinforcing structure and the radially outer end of the rigidifying reinforcement is greater than or equal to 20% and less than or equal to 40% of the radial height H of the tire and such that the distance DAI between the radially innermost point of the at least one annular reinforcing structure and the radially inner end of the rigidifying reinforcement is less than or equal to 20% of the radial height H of the tire, and wherein the rigidifying reinforcement is entirely radially outside of the radially innermost point of the at least one annular reinforcing structure, and wherein the rigidifying reinforcement is partially sandwiched between and contacting the main portion of the carcass reinforcement and the wrapped-around portion of the carcass reinforcement.