A universal traction device for movement over even and uneven supporting surfaces that includes an all-terrain wheel having a circular wheel assembly with a plurality of spoke-containing components arrayed around an outer perimeter wheel edge and control means for extending spokes from the spoke-containing units when encountering an obstacle that the vehicle is to traverse and retracting the spokes when the spokes are no longer required for traversing the obstacle.

The present invention is provided with: a mounting body mounted on an axle; a ring-shaped body (13) surrounding the mounting body from an outside in a tire radial direction; a connecting member (15) configured to connect the mounting body and the ring-shaped body (13) such that the mounting body and the ring-shaped body (13) are displaceable; and a cylindrical tread member (16) mounted over the ring-shaped body (13), wherein grooves (51, 52) are formed at an outer peripheral surface of a portion located above and corresponding to a portion of the tread member (16) at which the ring-shaped body (13) and the connecting member (15) are connected.

A non-pneumatic tire includes an inner ring having an axis of rotation and an outer ring having a plurality of circumferential reinforcements. The non-pneumatic tire further includes support structure extending from the inner ring to the outer ring. The non-pneumatic tire also includes a circumferential tread extending about the outer ring. The circumferential tread includes a tread reinforcement layer spaced from a bottom of the circumferential tread.

A non-pneumatic tire includes an inner ring having an axis of rotation and an outer ring having a plurality of circumferential reinforcements. The non-pneumatic tire further includes support structure extending from the inner ring to the outer ring. The non-pneumatic tire also includes a circumferential tread extending about the outer ring. The circumferential tread includes a tread reinforcement layer spaced from a bottom of the circumferential tread.

A modular non-pneumatic tire includes a first annular tire module and a second annular tire module coaxial with the first annular tire module. The first annular tire module includes a first inner ring, a first outer ring coaxial with the first inner ring, first support structure extending between the first inner ring and the first outer ring, and a first circumferential tread extending about the first outer ring. The second annular tire module includes a second inner ring, a second outer ring coaxial with the second inner ring, second support structure extending between the second inner ring and the second outer ring, and a second circumferential tread extending about the second outer ring. The first and second circumferential treads are asymmetrical. The first circumferential tread has a first orientation and the second circumferential tread has a second orientation that is different from the first orientation.

A tire includes a plurality of rim members disposed at different positions on a same axis, a plurality of body springs that connect between the respective plurality of rim members, and an interlink member that interlinks the adjacent body springs. Each of the plurality of body springs includes an elastic deformable portion, and latch portions that are provided at both ends of the elastic deformable portion and have a different shape from the elastic deformable portion. The latch portions are latched on the rim members.

A tire includes a plurality of rim members disposed at different positions on a same axis, a plurality of body springs that connect between the respective plurality of rim members, and an interlink member that interlinks the adjacent body springs. Each of the plurality of body springs includes an elastic deformable portion, and latch portions that are provided at both ends of the elastic deformable portion and have a different shape from the elastic deformable portion. The latch portions are latched on the rim members.

A non-pneumatic tire including an inner cylinder, an outer cylinder, and a connecting member. The outer cylinder and the connecting member elastically deformable. A thickness of a thickest part of the outer cylinder is thicker than a thickest part of the connecting member. The connecting member includes a vertical base portion that extends toward the inside in the tire radial direction from the outer cylinder's inner peripheral surface. A horizontal base portion extends along the tire circumferential direction from an inner end portion in the tire radial direction of the vertical base portion toward one side in the tire circumferential direction. An inclined portion gradually extends toward one side in the tire circumferential direction from an end portion on one side in the tire circumferential direction of the horizontal base portion toward the inside in the tire radial direction and is connected to the inner cylinder's outer peripheral surface.

A non-pneumatic tire including an inner cylinder, an outer cylinder, and a connecting member. The outer cylinder and the connecting member elastically deformable. A thickness of a thickest part of the outer cylinder is thicker than a thickest part of the connecting member. The connecting member includes a vertical base portion that extends toward the inside in the tire radial direction from the outer cylinder's inner peripheral surface. A horizontal base portion extends along the tire circumferential direction from an inner end portion in the tire radial direction of the vertical base portion toward one side in the tire circumferential direction. An inclined portion gradually extends toward one side in the tire circumferential direction from an end portion on one side in the tire circumferential direction of the horizontal base portion toward the inside in the tire radial direction and is connected to the inner cylinder's outer peripheral surface.

A tire that has a hub and a spoke is provided. The spoke extends from the hub in a radial direction of the tire. The spoke has a first face and a second face that are spaced from one another in a longitudinal direction of the tire. The spoke has a crack suppression feature that has a groove that extends into the first face. The groove extends in the radial direction.