Abstract: Tire-type device having bearing elements (7) within annular space (5) between inner and outer coaxial structures of revolution, the latter contacting the ground in contact patch (A). The bearing elements are independent in pairs and buckle under compression in contact patch (A). The smallest characteristic dimension E of section S of bearing element (7) is at most equal to 0.02 times the mean radial height H of the inner annular space (5), the surface density D of the bearing elements (7) per unit area of the radially outer structure of revolution, expressed in 1/m2, is at least equal to Z/(A*?Fr/n), where Z is the nominal radial load, A is the area of contact with the ground, and ?Fr/n is the mean force at break under tension of the n bearing elements made to buckle under compression. Two sidewalls (8) close space (5), forming a closed cavity that can be pressurized.

Abstract: Tire-type device having bearing elements (7) within annular space (5) between inner and outer coaxial structures of revolution, the latter contacting the ground in contact patch (A). The bearing elements are independent in pairs and buckle under compression in contact patch (A). The smallest characteristic dimension E of the section S of any bearing element (7) is at most equal to 0.02 times the mean radial height H of the inner annular space (5), the surface density D of the bearing elements (7) per unit area of the radially outer structure of revolution, expressed in 1/m2, is at least equal to Z/(A*?Fr/n), where Z is the nominal radial load, expressed in N, A is the area of contact with the ground, expressed in m2, and ?Fr/n is the mean force at break under tension of the n bearing elements made to buckle under compression, expressed in N.

Abstract: Each of at least two layers of a carcass reinforcement has a breaking force per unit width higher than 2250 daN/dm. The minimum strength per unit width, measured for an elongation of less than 10%, of a second layer of carcass reinforcement is strictly greater than a value equal to 20% of the minimum strength per unit width, measured for an elongation of less than 10%, of a first layer of carcass reinforcement. The reinforcing elements of the two layers of carcass reinforcement have a thread count of less than 750 tex. The elongation of the reinforcing elements of the second layer of carcass reinforcement is greater than 4% under a force of 20 daN, and the secant elastic modulus values under tension at 10% elongation, Mt, Mj, satisfy the relationship Mt/Mj?1.

Abstract: A tire carcass comprises two sidewalls (2) and a crown region (3) suitable for receiving, radially externally, a tread (4), the internal surface of the sidewalls and of the crown forming an internal wall (10), and also comprises a circumferential tread support surface (6) provided with a layer of thermoplastic elastomer (TPE).

Abstract: A tire carcass (1) comprises two sidewalls (2) and a crown (3) suitable for receiving, radially externally, a tread (4), the internal surface of the sidewalls and of the crown forming an internal wall (10), also comprising a circumferential tread support surface (6) provided with a layer of thermoplastic elastomer (TPE), the support surface (6) extending from one bead (7) to the other while passing through the sidewalls (2) and the crown (3).

Abstract: A tire tread (4), comprising an inner face and an outer face, comprises a supporting surface (8) covered with a layer of thermoplastic elastomer (TPE).

Abstract: A collapsible tire for a passenger vehicle, comprising at least one carcass reinforcement optionally associated with an inextensible crown reinforcement, itself radially on the inside of a tread, two beads and two sidewalls, said beads comprising at least one inextensible circumferential reinforcing element called a bead wire, said bead wire defining, when free of any stress, a mean line forming a substantially circular closed curve in a circumferential plane, wherein the invention is characterized in that the bead wire of each bead is flexible, wherein after the tire has been collapsed, the mean line of the bead wire simultaneously defines a first curvature, and a second curvature, the first and second curvatures being connected together by a third connecting curvature, the projection of said first, second and third curvatures of the collapsed tire onto an axial plane defining the two-dimensional envelope by way of a total perimeter P of less than or equal to [3x(2H+A)], H being the height of the sidewall an