Disclosed herein are methods for degrading polyurethane foam from mounted polyurethane foam-containing tires, methods for separating a wheel from a mounted polyurethane foam-containing tire, methods for preparing a degradable foam-containing tire, and degradable foam-containing tires. The methods include applying a solution comprising at least one phosphorous oxoacid or an ester thereof to the polyurethane foam inside of a tire, incorporating a degradant comprising at least one phosphorous oxoacid or an ester thereof into the polyurethane foam, or both, and then heating to degrade the foam. Degradation of the foam allows for separation of the wheel from the rubber carcass of the tire.

A wheel for a vehicle (e.g., a construction vehicle, an all-terrain vehicle, or other off-road vehicle) or other device, in which the wheel comprises a non-pneumatic tire and may be designed to enhance its use and performance and/or use and performance of the vehicle or other device, including, for example, to be able to be used longer and/or in more challenging conditions, such as, for instance, by being more thermally efficient (e.g., to avoid or reduce adverse effects such as rapid degradation in material properties that could otherwise arise due to excessive temperatures) and/or more resistant to cracking or other damage which could lead to premature failure (e.g., due to manufacturing artifacts and/or rocks and other hazards that can cut, chip, or tear it during use).

A non-pneumatic tire includes an inner ring, an outer ring, and a plurality of loops extending between the inner ring and the outer ring. The plurality of loops including at least a first loop and a second loop, wherein the first loop and the second loop are each in direct contact with both the inner ring and the outer ring. The first loop has a single reinforcement layer disposed therein, and includes a first extent that extends between the inner ring and the outer ring and a second extent that extends between the inner ring and the outer ring. The second loop has a single reinforcement layer disposed therein, and includes a third extent that extends between the inner ring and the outer ring and a fourth extent that extends between the inner ring and the outer ring. The second extent is in direct contact with the third extent.

A non-pneumatic tire includes a tread; a shear band, and a connecting web positioned between a hub and the shear band. The shear band has a first and second membrane layer formed of a plurality of parallel reinforcement cords arranged at an angle of 10 degrees or less with respect to the tire equatorial plane, said o tread further comprises a first angled belt located radially outward of the second membrane layer, and a second angled belt located radially outward of the first angled belt, wherein the first and second angled belt each have parallel reinforcement cords having a belt angle in the range of 15-30 degrees with respect to the tire equatorial plane, and wherein the angle of the second angled belt has an angle equal and opposite direction of the belt angle of the first angled belt.

A non-pneumatic tire includes a shear band having a first membrane layer located radially inward of the outer annular tread, a second membrane layer located radially outward of the first membrane layer, wherein the first and second membrane layer are formed of a plurality of parallel reinforcement cords arranged at an angle of 10 degrees or less with respect to the tire equatorial plane, said outer annular tread further comprises a first angled belt located radially outward of the second membrane layer, and a second angled belt located radially outward of the first angled belt, wherein the first and second angled belt each have parallel reinforcement cords having a belt angle in the range of 15-30 degrees with respect to the tire equatorial plane, and wherein the angle of the second angled belt has an angle equal and opposite direction of the belt angle of the first angled belt.

An improved wheel for a mobility apparatus designed is disclosed herein. The wheel conforms to obstacles in the ground, creating a smoother walking experience. The inner web of a tire of the wheel preferably consists of polygonal reliefs offset from each other over multiple layers in a radially symmetric pattern to create a web which naturally compresses to absorb shock from obstacles. The tire's inner core preferably consists of a hexagonal membrane that extends parallel to the axel of the tire and extends out of each side of the wheel such that it is visible.

A tyre comprising an adaptive tread, the adaptive tread comprising a plurality of surface sections, wherein each surface section can move without deformation relative to the other surface sections to form a tread pattern.

A wheel assembly for coupling to an axle may include an outer rim, and distal inboard and outboard attachment points coupled to the outer rim. An inboard axle attachment assembly may include an inboard medial portion to be coupled to the axle and angularly spaced inboard arms extending outwardly from the inboard medial portion and defining proximal inboard attachment points. An outboard axle attachment assembly may be rotationally offset from the inboard axle attachment assembly and include an outboard medial portion to be coupled to the axle and angularly spaced outboard arms extending outwardly from the outboard medial portion and defining proximal outboard attachment points. Inboard gas springs may each be coupled between respective ones of the distal inboard attachment points and the proximal inboard attachment points, and outboard gas springs may each be coupled between respective ones of the distal outboard attachment points and the proximal outboard attachment points.

A wheel assembly for coupling to an axle may include an outer rim, and distal inboard and outboard attachment points coupled to the outer rim. An inboard axle attachment assembly may include an inboard medial portion to be coupled to the axle and angularly spaced inboard arms extending outwardly from the inboard medial portion and defining proximal inboard attachment points. An outboard axle attachment assembly may be rotationally offset from the inboard axle attachment assembly and include an outboard medial portion to be coupled to the axle and angularly spaced outboard arms extending outwardly from the outboard medial portion and defining proximal outboard attachment points. Inboard gas springs may each be coupled between respective ones of the distal inboard attachment points and the proximal inboard attachment points, and outboard gas springs may each be coupled between respective ones of the distal outboard attachment points and the proximal outboard attachment points.

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/m.sup.2, is at least equal to Z/(A*ΣFr/n), where Z is the nominal radial load, expressed in N, A is the area of contact with the ground, expressed in m.sup.2, and ΣFr/n is the mean force at break under tension of the n bearing elements made to buckle under compression, expressed in N.