TYRE COMPRISING A REINFORCING PROFILED SECTION IN AT LEAST ONE SIDEWALL, AND MOUNTED TYRE/RIM ASSEMBLY

摘要

The invention concerns a tyre (101) comprising at least a first bead, whereof the seat has a generatrix the axially inner end of which is on the circle with diameter greater than the diameter of the circle whereon is located the axially outer end, and a radial carcass reinforcement (112) wound in each bead around at least an element reinforcing the tyre bead (105), starting from inside outwards to form a turn-up, the meridian profile of the carcass reinforcement, when the tyre is mounted on its service rim (102) and inflated at recommended pressure, has a constant curvature direction in the first bead and a sidewall extending it radially, and has a tangent TT' at the point of tangency T of said profile with an annular element (105) of said first bead forming with the axis of rotation an angle phi open outwards and greater than 45 DEG . Said tyre is characterised in that, viewed in meridian cross-section, at least the sidewall (107) extending the first bead comprises a reinforcing profiled section (114) having, viewed in cross-section, substantially a crescent shape; one of the surfaces inner or outer of the profiled section (114) matches the profile of the carcass reinforcement ; the trace of the surface of the profiled section on the side opposite the surface of said profiled section nearest to the carcass reinforcement has only one curvature direction.