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.

A wheel rotated by a load applied to an axle remaining stationary at an eccentric position is disclosed. The present invention comprises: the wheel configured such that the outer periphery of an inner rim of the wheel assembled to a wheel hub provided at the axle to which the load is applied applies pressure to a plurality of compressive force elastic bodies provided at the inner periphery of an outer rim of the wheel; and a control roller for pushing the outer rim of the wheel at a gap of a predetermined range such that the axle provided at the wheel hub always remains stationary at the eccentric position of the wheel.

An adjustable airless tire system with changeable supporting structures optimizes the contradictory relationship between a suspension potential and a tension of a tire according to changes of road conditions. The changeable supporting structures can be selected from one of three separated and compatible parts, including metallic rods, or springs or spring-loaded shock absorbers according to customer's requirements and usage of a vehicle. A metallic cable is used to maximize the suspension potential of the tire and a control component is used to regulate the tension of the tire. A curved tire forms a closed space between the tire and a rim to prevent foreign objects from sticking between them. Therefore, the invention possesses advantages of oil efficiency, affordability, comfortability, controllability and safety.

A driving wheel includes: a first disc provided to be rotatable with respect to a rotary shaft; a second disc provided to be rotatable with respect to the rotary shaft; a plurality of spokes each protruding outward and each having a first side rotatably coupled to the first disc and a second side rotatably coupled to the second disc; a first motor to rotate the first disc; and a second motor to rotate the second disc

A wheel assembly to be coupled to a hub of a vehicle, may include arcuate inner rim assemblies removably coupled together to define a circular inner rim to be coupled to the hub of the vehicle. Each arcuate inner rim assembly may include an arcuate inner rim segment, and an arcuate inner ring segment extending radially outward from the arcuate inner rim segment. The wheel assembly may also include arcuate outer rim assemblies removably coupled together to define a circular outer rim. Each arcuate outer rim assembly may include an arcuate outer rim segment, and an arcuate outer ring segment extending radially inward from the arcuate outer rim segment. The wheel assembly may also include gas springs operatively coupled between the circular inner rim and the circular outer rim to provide a gas suspension for relative movement therebetween.

A wheel assembly to be coupled to a hub of a vehicle, may include arcuate inner rim assemblies removably coupled together to define a circular inner rim to be coupled to the hub of the vehicle. Each arcuate inner rim assembly may include an arcuate inner rim segment, and an arcuate inner ring segment extending radially outward from the arcuate inner rim segment. The wheel assembly may also include arcuate outer rim assemblies removably coupled together to define a circular outer rim. Each arcuate outer rim assembly may include an arcuate outer rim segment, and an arcuate outer ring segment extending radially inward from the arcuate outer rim segment. The wheel assembly may also include gas springs operatively coupled between the circular inner rim and the circular outer rim to provide a gas suspension for relative movement therebetween.

A wheel including a substantially radially rigid rim; a hub for mounting the wheel to an axle; and, a plurality of actuators coupling the hub to the rim, the plurality of actuators being adjustable to control a hub position, the hub position being a position of the hub relative to the rim, and wherein at least some of the plurality of actuators act outside a plane of the rim.

A wheel including a substantially radially rigid rim; a hub for mounting the wheel to an axle; and, a plurality of actuators coupling the hub to the rim, the plurality of actuators being adjustable to control a hub position, the hub position being a position of the hub relative to the rim, and wherein at least some of the plurality of actuators act outside a plane of the rim.

A wheel assembly to be coupled to a hub of a vehicle may include an inner rim to be coupled to the hub of the vehicle, and an outer rim surrounding the hub. The wheel assembly may also include gas springs operatively coupled between the inner rim and the outer rim to provide a gas suspension for relative movement between the inner rim and the outer rim. The wheel assembly may also include a disk coupled to the inner rim and defining a closeable gap with adjacent interior portions of the outer rim to define a mechanical stop to limit relative movement of the inner rim and outer rim.

A wheel assembly to be coupled to a hub of a vehicle may include an inner rim to be coupled to the hub of the vehicle, and an outer rim surrounding the hub. The wheel assembly may also include gas springs operatively coupled between the inner rim and the outer rim to provide a gas suspension for relative movement between the inner rim and the outer rim. The wheel assembly may also include a disk coupled to the inner rim and defining a closeable gap with adjacent interior portions of the outer rim to define a mechanical stop to limit relative movement of the inner rim and outer rim.