A non-pneumatic tire includes a body and a tire tread portion on the body, wherein the body comprises an outer cylindrical member, an inner cylindrical member coupled to a wheel shaft, and a plurality of spokes disposed between and coupled to the outer cylindrical member and the inner cylindrical member, wherein the spokes are embodied as a connection of an annular series of a plurality of ellipse shape tubes or a connection of an annular series of a plurality of arch shape tubes in an intermediate cylindrical space defined between the inner and outer cylindrical members.

Provided is an non-pneumatic tire that includes thermoplastic elastomer which is pre-tensioned during the process of forming the non-pneumatic tire. The pre-tension is provided by a thermal means that is naturally available in the forming process. This results in an efficient manufacturing combined with efficiency of pre-tension, without a complexity of adding a pre-tension from mechanical means.

A non-pneumatic tire (100) having an annular beam (200) and an annular support (103) comprising a plurality of thermoplastic elastomeric spokes formed by a thermoplastic injection process. When manufacturing this non-pneumatic tire via a mold, then the radial extent of a mold cavity is defined by the radially inner extent of the annular beam (200). The non-pneumatic tire's annular beam (200) includes a first elastomer and a circumferential reinforcement extended in a circumferential direction. The annular beam (200) is free of the circumferential reinforcement at an axial extent over a width of at least 8 mm the axial extent comprising the first elastomer. The plurality of thermoplastic elastomeric spokes are made of a second elastomer and extend radially inward from the annular beam (200). The present invention also refers to a process for forming such a non-pneumatic tire (100).

A non-pneumatic tire with an annular body of resilient elastomeric material comprises circumferential web members supported by a plurality of circumferentially spaced crossed spoke pairs. The thickness and angle of the spokes in each crossed spoke pair varies.

A non-pneumatic tire compries a tire wheel; a rim which is made of a rigid material and concentrically disposed at an interval with respect to the tire wheel; spokes each of which has one side fastened to a circumference of the tire wheel and the other side fastened to a circumference of the rim and elastically supports the interval between the tire wheel and the rim; and a tire cover which is coupled to cover the rim and has a tread pattern formed on an outer surface of the tire cover, wherein the rim has a plurality of circular rings having a width and a thickness, the plurality of rings is disposed to face one another at intervals in a width direction of the tire cover, and interval support members, which elastically support the intervals among the rings and bind the rings, are provided among the rings.

Provided is an non-pneumatic tire that includes thermoplastic elastomer which is pre-tensioned during the process of forming the non-pneumatic tire. The pre-tension is provided by a thermal means that is naturally available in the forming process. This results in an efficient manufacturing combined with efficiency of pre-tension, without a complexity of adding a pre-tension from mechanical means.

A spoke (100) for a wheel (10) attaching an outer tread (200) to a hub (20), the spoke having a first (142) and second (144) spoke elements joined by a joint body (130) comprised of an elastomer connecting the first spoke element to a second spoke element.

To provide a rubber compound for tires, a pneumatic tire and an airless tire capable of improving the steering stability of the tire while exerting excellent low fuel consumption performance. A rubber compound for tires characterized in that, of vulcanized rubber's physical properties, a complex elastic modulus E*.sub.70 (unit: MPa) and a loss tangent tanδ.sub.70 under initial strain of 10%, dynamic strain of 2% and temperature of 70 degrees C., satisfy 90<E.sub.70<250, and E*.sub.70/tan δ.sub.70>800. A pneumatic tire provided with a rubber member made of the above-mentioned rubber compound. An airless tire provided with a rubber member made of the above-mentioned rubber compound. An airless tire provided in a tread ring with a shear rubber layer made of the above-mentioned rubber compound.

In a non-pneumatic tire according to the present invention, a plurality of curved portions (21d to 21f and 22d to 22f) curved in a tire circumferential direction are formed on elastic coupling plates (21 and 22) in an extending direction in which the elastic coupling plates (21 and 22) extend in a tire side view when the non-pneumatic tire 1 is viewed from a tire width direction, curvature directions of the curved portions (21d to 21f and 22d to 22f) adjacent to each other in the extending direction are opposite to each other, the size or thickness in the tire width direction and a transverse section area of the elastic coupling plates (21 and 22) are the minimum at one of a plurality of inflection portions (21g, 21h, 22g, and 22h) positioned between curved portions adjacent to each other in the extending direction of the elastic coupling plates (21 and 22), and the size or thickness in the tire width direction and the transverse section area of the elastic coupling plates (21 and 22) gradually decrease in the extending direction from opposite sides toward one inflection portion (21h and 22h).

A shear band and a non-pneumatic tire is described which includes a ground contacting annular tread portion; a shear band, and a connecting web positioned between a hub and the shear band. The shear band is preferably comprised of a three-dimensional spacer fabric having a first and second layer connected by connecting members. The three-dimensional spacer fabric has a defined depth. The three-dimensional spacer structure further includes a plurality of cells formed between the connecting members, and wherein one or more of the cells are filled with a filler material. The filler material may be foam or a thermoplastic elastomer.