There is provided a non-pneumatic tire (1) including: an attachment body (11) that is attached to an axle; a ring-shaped body (13) that surrounds the attachment body (11) from an outside in a tire radial direction, a plurality of connection members (15) that are disposed between the attachment body (11) and the ring-shaped body (13) along a tire peripheral direction and connect the attachment body (11) and the ring-shaped body (13) to each other, and a cylindrical tread member (16) that is externally mounted on the ring-shaped body (13), in which the ring-shaped body (13) and the connection member (15) are integrally formed by a injection molding in which a molding material is injected from the connection member (15) side toward the ring-shaped body (13) side, in which the tread member (16) includes a base rubber portion (41) that is positioned at an inside in the tire radial direction and a cap rubber portion (42) that is positioned at an outside of the base rubber portion (41) in the tire radial direction, in which rigidity of the base rubber portion (41) is lower than rigidity of the cap rubber portion (42), and in which the base rubber portion (41) is disposed at least in a portion positioned between the connection members (15) adjacent to each other in the tire peripheral direction in the ring-shaped body (13).

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/m.sup.2, is at least equal to Z/(A*ΣFr/n), where Z is the nominal radial load, A is the area of contact with the ground, and ΣFr/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.

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/m.sup.2, is at least equal to Z/(A*ΣFr/n), where Z is the nominal radial load, A is the area of contact with the ground, and ΣFr/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.

A pre-strained non-pneumatic tire has an inner ring, an outer ring, and a plurality of polymeric connecting elements extending from the inner ring to the outer ring. The pre-strained non-pneumatic tire made by a process that includes forming an initial non-pneumatic tire and straining at least a portion of one of the plurality of polymeric connecting elements.

An improved spoke for a tire attaching an outer tread to a hub, the spoke having a spoke element possessing spoke element reinforcements, the spoke element joined by a joint body comprised of an elastomer connecting the spoke element to an outer compliant band where the joint body possesses an aperture so as to reduce the weight and hysteresis of the spoke.

A non-pneumatic wheel having a hub, an outer tread band and a plurality of spokes connecting the hub with the outer tread band, each of the plurality of spokes having first and second spoke elements joined by a body comprised of an elastomer connecting the first spoke element to the second spoke element.

A non-pneumatic tire includes a lower ring having a first diameter and an upper ring having a second diameter greater than the first diameter. The upper ring is substantially coaxial with the lower ring. The non-pneumatic tire further includes support structure extending between the lower ring and the upper ring. The non-pneumatic tire also includes an upper sidewall having an annulus shape that covers a portion of a first side of the support structure. The upper sidewall has an inner diameter that is greater than the first diameter.

A wheel assembly for a tire includes a circular hub member for securing to a rotatable axle of a vehicle, a first rim piece for engaging the hub member, a second rim piece for engaging the first rim piece, and a plurality of cylindrical sleeves for engaging both the first rim piece and the second rim piece. The first rim piece has cylindrical first shafts each engaging a first end of one of the sleeves. The second rim piece has cylindrical second shafts each engaging a second opposite end of one of the sleeves. An outer cylindrical surface of each sleeve engages a separate and distinct part the tire.

A wheel assembly for a tire includes a circular hub member for securing to a rotatable axle of a vehicle, a first rim piece for engaging the hub member, a second rim piece for engaging the first rim piece, and a plurality of cylindrical sleeves for engaging both the first rim piece and the second rim piece. The first rim piece has cylindrical first shafts each engaging a first end of one of the sleeves. The second rim piece has cylindrical second shafts each engaging a second opposite end of one of the sleeves. An outer cylindrical surface of each sleeve engages a separate and distinct part the tire.

An elastic wave cloaking lattice-based metamaterial for cloaking an object within a void includes a lattice of connected unit cells arranged to form a void, each unit cell comprising a mass and a plurality of connecting springs, the mass coupled by the plurality of connecting springs to masses in adjacent unit cells, the plurality of connecting springs comprising at least two large springs of a first length and at least two short springs of a second length, the first length greater than the second length, the springs and masses having relational and mechanical characteristics to facilitate elastic wave cloaking in the totality of the lattice. The lattice as a whole has metamaterial properties resulting from the positional relationship and mechanical properties of masses and connecting springs of the unit cells such that the lattice at least partially cloaks an object or material portioned within the void from elastic waves.