Tire comprising a durable stiffening structure and allowing proper flattening

A tire comprising:

• a crown comprising a crown reinforcement;
• a first sidewall and a second sidewall, which each extend the crown radially inward and which are respectively arranged on a first side and a second side of a median plane of the tire;
• a first bead and a second bead, which each extend the first sidewall and the second sidewall radially inward respectively and which are respectively arranged on the first side and the second side of the median plane;
• an internal surface delimiting a toroidal cavity for inflating the tire;
• a carcass reinforcement, which is anchored in each of the first and second beads and which extends in each of the first and second sidewalls and in the crown, the carcass reinforcement being radially inside the crown reinforcement in the crown;
• and
• a stiffening structure comprising:
• one or more first stiffening elements, the or each first stiffening element extending continuously in the toroidal cavity from the first sidewall or the first bead as far as the crown, and one or more second stiffening elements, the or each second stiffening element extending continuously in the toroidal cavity from the second sidewall or the second bead as far as the crown,
• at least one radially outer reinforcing structure that is:
• arranged in the crown,
• distinct from the carcass reinforcement, from the crown reinforcement, and from the or each first stiffening element and the or each second stiffening element, and
• buried in a crown material mass of the crown, which physically separates the at least one radially outer reinforcing structure from the crown reinforcement and from the carcass reinforcement,
• a first radially inner reinforcing structure that is:
• arranged in the first sidewall or the first bead,
• distinct from the carcass reinforcement and from the or each first stiffening element and the or each second stiffening element, and
• buried in a first material mass of the first sidewall or the first bead, which physically separates the first radially inner reinforcing structure from the carcass reinforcement, and
• a second radially inner reinforcing structure that is:
• arranged in the second sidewall or the second bead,
• distinct from the carcass reinforcement and from the or each first stiffening element and the or each second stiffening element, and
• buried in a second material mass of the second sidewall or the second bead, which physically separates the second radially inner reinforcing structure from the carcass reinforcement,
• wherein the or each first stiffening element:
• passes through the internal surface at a first radially inner anchor point of the first sidewall or the first bead to extend from said first radially inner anchor point deep into said first material mass so as to be anchored beneath the internal surface in or around the first radially inner reinforcing structure and to be physically separated by said first material mass from the carcass reinforcement,
• passes through the internal surface at a first radially outer anchor point of the crown to extend from said first radially outer anchor point deep into said crown material mass so as to be anchored beneath the internal surface in or around the at least one radially outer reinforcing structure and to be physically separated by said crown material mass from the carcass reinforcement and the crown reinforcement, and
• comprises a portion extending in the toroidal cavity between the first radially inner anchor point and the first radially outer anchor point,
• wherein the or each second stiffening element:
• passes through the internal surface at a second radially inner anchor point of the second sidewall or the second bead to extend from said second radially inner anchor point deep into said second material mass so as to be anchored beneath the internal surface in or around the second radially inner reinforcing structure and to be physically separated by said second material mass from the carcass reinforcement,
• passes through the internal surface at a second radially outer anchor point of the crown to extend from said second radially outer anchor point deep into said crown material mass so as to be anchored beneath the internal surface in or around the at least one radially outer reinforcing structure and to be physically separated by said crown material mass from the carcass reinforcement and the crown reinforcement, and
• comprises a portion extending in the toroidal cavity between the second radially inner anchor point and the second radially outer anchor point,
• wherein the first radially outer anchor point and the first radially inner anchor point for the or each first stiffening element are arranged on the first side of the median plane,
• wherein the second radially outer anchor point and the second radially inner anchor point for the or each second stiffening element are arranged on the second side of the median plane, and
• wherein said portion of the or each first stiffening element and said portion of the or each second stiffening element do not cross over in the toroidal cavity.