Patent ID: 6571846
Filing Date: 2003-06-03
Classification: B60C,Y10T

Abstract:
A tire having a radial carcass reinforcement comprising, viewed in meridian section, a first bead, having a seat which has a generatrix, the axially inner end of which lies on a circle of diameter greater than the diameter of the circle on which the axially outer end is located, the bead having a heel and a toe, the heel being axially to the inside and reinforced by at least one inextensible, annular reinforcement element which is coated with rubber mix, the bead toe being axially to the outside and comprising a profiled element of rubber mix in the form of a wedge defined by a radially inner side and a radially outer side, the two sides starting from an apex A located beneath a section of the at least one annular element, the radially outer side forming, with a straight line parallel to the axis of rotation passing through said apex A, an acute angle Ã¸1, which is open radially and axially towards the outside, and the radially inner side forming with said parallel line an acute angle Ã¸2, which is open radially towards the inside, the rubber mix forming the profiled element, axially adjacent the a least one annular element, having a Shore A hardness greater than the Shore A hardness of any rubber mixes radially above said at least one annular element and said profiled element, the tire characterized in that the radial carcass reinforcement of said tire in the bead winds around said at least one annular element from the inside to the outside to form an upturn, the end of which is located on one hand axially to the outside of a straight line P2 perpendicular to the axis of rotation and passing through the center of gravity of the meridian section of the at least one annular element, and on the other hand, axially to the inside and radially to the outside of the straight line, P1 defining the radially outer side of the profiled element.