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, an outer rim surrounding the inner rim, and gas springs operatively coupled between the inner rim and the outer rim to provide a gas suspension permitting relative movement between the inner rim and the outer rim. Each of the gas springs may include a gas cylinder having an inner surface, and a piston movable within the gas cylinder. The piston may include a shaft, a piston head coupled to the shaft and having at least one recess therein, and at least one biasing member within the at least one recess. Each gas spring may also include at least one damping member adjacent the at least one biasing member and within the at least one recess to frictionally engage the inner surface of the gas cylinder.

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, an outer rim surrounding the inner rim, and gas springs operatively coupled between the inner rim and the outer rim to provide a gas suspension permitting relative movement between the inner rim and the outer rim. Each of the gas springs may include a gas cylinder having an inner surface, and a piston movable within the gas cylinder. The piston may include a shaft, a piston head coupled to the shaft and having at least one recess therein, and at least one biasing member within the at least one recess. Each gas spring may also include at least one damping member adjacent the at least one biasing member and within the at least one recess to frictionally engage the inner surface of the gas cylinder.

A device to increase the grip of the tread of the wheel of a vehicle is disclosed. A base is secured to the outside of the face of the rim of a wheel, and a plurality of moving spokes whose ends are connected to claws are elastically connected to each other to form a belt whose diameter progressively increases during its positioning. The moving spokes cause the belt to switch from a retracted rest configuration having the shape of an annulus, in which the claws are arranged inside the perimeter of the base (2), to a configuration that make its extension progressively increase around the tread, wherein the claws contact a roadbed.

A wheel assembly may include an inner rim to be coupled to a hub of a vehicle, an outer rim surrounding the inner rim, and gas springs operatively coupled between the inner and outer rims to provide a gas suspension. The wheel assembly may also include tread assemblies carried by the outer rim. The wheel assembly may also include fastener assemblies. Each fastener assembly may couple respective adjacent wheel assembly components. Each fastener assembly may include a fastener, a lock washer having a sloped surface, and a slotted wedge including a frusto-conical body having a slot therein. The slotted wedge may have a sloped surface slidably engaging the lock washer sloped surface to permit relative rotation so that loosening from a fully tightened position exposes a gap therebetween.

A wheel assembly may include an inner rim to be coupled to a hub of a vehicle, an outer rim surrounding the inner rim, and gas springs operatively coupled between the inner and outer rims to provide a gas suspension. The wheel assembly may also include tread assemblies carried by the outer rim. The wheel assembly may also include fastener assemblies. Each fastener assembly may couple respective adjacent wheel assembly components. Each fastener assembly may include a fastener, a lock washer having a sloped surface, and a slotted wedge including a frusto-conical body having a slot therein. The slotted wedge may have a sloped surface slidably engaging the lock washer sloped surface to permit relative rotation so that loosening from a fully tightened position exposes a gap therebetween.

A wheel assembly may include an inner rim to be coupled to a hub of a vehicle, an outer rim surrounding the inner rim, and a rigid cover ring coupled to the outer rim and extending radially inward toward the inner rim. The wheel assembly may also include gas springs operatively coupled between the inner and outer rims to provide a gas suspension for relative movement between the inner and outer rims. The wheel assembly may also include fastener assemblies, each coupling respective adjacent components and including a fastener, a lock washer carried by the fastener and having a sloped surface, and a slotted wedge carried by the fastener and including a frusto-conical body having a slot therein. The slotted wedge may have a sloped surface slidably engaging the sloped surface to permit relative rotation so that loosening from a fully tightened position exposes a gap therebetween.