Abstract: A bolt includes a shank having a first end, a second end, a first external thread proximate to the first end, and a second external thread proximate to the second end. The first external thread twists in a first direction, the second external thread twists in a second direction, and the first direction is different from the second direction. The first external thread includes a minor diameter, the second external thread includes a major diameter, and the minor diameter of the first external thread is greater than the major diameter of the second external thread.

Abstract: A wheel assembly for coupling to an axle may include an outer rim, distal inboard attachment points coupled to the outer rim, and distal outboard attachment points coupled to the outer rim. The wheel assembly may also include an axle attachment assembly that includes a medial portion to be coupled to the axle, rotationally spaced inboard arcuate arms extending outwardly from the medial portion and defining proximal inboard attachment points, and rotationally spaced outboard arcuate arms extending outwardly from the medial portion and defining proximal outboard attachment points. The wheel assembly may also include inboard gas springs, each coupled between respective ones of the distal inboard attachment points and the proximal inboard attachment points, and outboard gas springs, each coupled between respective ones of the distal outboard attachment points and the proximal outboard attachment points.

Abstract: A wheel assembly may include an inner rim, and an outer rim surrounding the inner rim. The outer rim may include outer rim segments each hingeably coupled in end-to-end relation to an adjacent outer rim segment to define the outer rim. The wheel assembly may also include gas springs operatively coupled between the inner and outer rims, and tread members each carried by a respective one of outer rim segments.

Abstract: 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. At least one gas spring may have a controllable operating response.

Abstract: 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.

Abstract: 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 inner rim. The wheel assembly may also include 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. An inboard flange may extend radially outward from an inboard side of the inner rim to define an inboard mechanical stop with the outer rim. An outboard flange may be spaced from the inboard flange and extend radially outward from an outboard side of the inner rim to define an outboard mechanical stop with the outer rim.

Abstract: A bolt includes a shank having a first end, a second end, a first external thread proximate to the first end, and a second external thread proximate to the second end. The first external thread twists in a first direction, the second external thread twists in a second direction, and the first direction is different from the second direction. The first external thread includes a minor diameter, the second external thread includes a major diameter, and the minor diameter of the first external thread is greater than the major diameter of the second external thread.

Abstract: 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.

Abstract: A bolt includes a shank having a first end, a second end, a first external thread proximate to the first end, and a second external thread proximate to the second end. The first external thread twists in a first direction, the second external thread twists in a second direction, and the first direction is different from the second direction. The first external thread includes a minor diameter, the second external thread includes a major diameter, and the minor diameter of the first external thread is greater than the major diameter of the second external thread.

Abstract: 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 hub, 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. The wheel assembly may also include a sidewall cover assembly that includes an inner sidewall cover coupled to the inner rim and extending radially outward toward the outer rim. The sidewall cover assembly may also include an outer sidewall cover coupled to the outer rim and extending radially inward toward the inner rim and in sliding overlapping relation with the inner sidewall cover permitting relative movement between the inner sidewall cover and the outer sidewall cover.

Abstract: A wheel assembly 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 permitting relative movement between the inner rim and the outer rim. The wheel assembly may also include tread assemblies carried by the outer rim. Each tread assembly may include a tread member support coupled to the outer rim, and spaced-apart tread members carried by the tread member support and defining a tread pattern therebetween. Each tread member may include at least one rubber layer, and at least one reinforcing layer in stacked relation.

Abstract: An off-highway vehicle may include an off-highway vehicle frame and a motor carried by the off-highway vehicle frame. The off-highway vehicle may also include wheel assemblies rotatably coupled to the off-highway vehicle frame without an intervening vehicle suspension and at least some of the wheel assemblies being driven by the motor. Each of the wheel assemblies may include an inner rim coupled to the hub, an outer rim surrounding the inner rim, and gas springs coupled between the inner rim and the outer rim to provide a gas suspension for relative movement between the inner and outer rims.

Abstract: 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 with associated integral hydraulic dampers coupled between the inner and outer rims to provide a suspension for relative movement between the inner and outer rims. Each gas spring and associated integral hydraulic damper may include a first cylinder body and a second cylinder body slidable therein, and a first seal defining first and second gas chambers within the first cylinder body. Each gas spring and associated integral hydraulic damper may also include a shaft extending within the first cylinder body and into the second cylinder body defining a hydraulic fluid chamber, and an enlarged orifice body coupled to the shaft defining a hydraulic damper with the second cylinder body.

Abstract: 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 inner rim. The wheel assembly may include gas springs operatively coupled between the inner rim and the outer rim and tread assemblies carried by the outer rim.

Abstract: A wheel assembly may include an inner rim to be coupled to the hub of the vehicle, and an outer rim surrounding the inner rim. Gas springs may be operatively coupled between the inner rim and the outer rim and permitting relative movement therebetween. The wheel assembly may also include a sensor configured to sense the relative movement between the inner and outer rims.

Abstract: A mine material processing apparatus may include a rotatable drum to process mine material, and wheel assemblies configured for rotation of the rotatable drum. Each wheel assembly may include an inner rim, an outer rim surrounding the inner rim, and gas springs operatively coupled between the inner rim and the outer rim.

Abstract: 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. An outer ring may be adjacent an inboard side of the outer rim and defining a closeable gap with adjacent interior portions of an inboard side of the inner rim to define a mechanical stop to limit relative movement between the inner rim and outer rim. The gas springs may be arranged on an outboard side of the outer ring.

Abstract: 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.

Abstract: A wheel assembly may include an inner rim to be coupled to the hub of the vehicle, and an outer rim surrounding the inner rim. The wheel assembly may also include gas springs operatively coupled between the inner rim and the outer rim and permitting relative movement therebetween. The wheel assembly may also include a rigid inboard cover ring coupled to an inboard side of the outer rim and extending radially inward toward the inner rim. A flexible inboard seal may be coupled between the rigid inboard cover ring and the inner rim.