The present invention relates to moving apparatus based on bearing points created by ends of lever arms with changeable length. The lever arm comprises two main components: body and end of lever arm. Lever arm body moves spirally or pendulously around the axis which is different from its axis, end of lever arm moves in and out along the lever arm body. The combination of movement of body and end of the lever arm creates bearing points of the apparatus on the terrain, thus creating capability to overcome barricades of the apparatus. Moreover, the combination of these two movements, when following appropriate principles, creates equilibrium for the frame of the apparatus on various terrains.

A tire bar having an elongated body 11. A traction section 12 is disposed at a first end of the elongated body 11. The traction section 12 is configured to be mounted over a tire tread on a vehicle wheel. The traction section 12 has an inner surface 14 configured to contact the treads of a wheel and an outer traction surface 2 configured to contact a driving surface. The inner surface 14 opposes the outer traction surface 2. A lug contact section 16 has a lug connector 1 configured to contact at least one lug nut on a wheel. The lug contact section 16 is configured to be movable along a length of the elongated body 11 to vary a distance between the lug section 16 and the traction section 12. A locking structure 4 is configured to lock the lug contact section 16 at a position on the elongated body 11. A method of unsticking a vehicle by rotating a wheel having the tire bar connected to the wheel.

The provided tire has excellent durability regardless of use in a high-humidity environment or contact with water, even though the framework member of the tire is made of a resin material. The resin material is made of a resin composition including 60 mass % or more of a polyamide resin formed by polymerizing an aliphatic diamine having 6 to 20 carbon atoms and an aliphatic dicarboxylic acid having 10 to 20 carbon atoms.

A device for scattering grit in front of the wheels of a vehicle comprises a housing having a feed inlet for the grit, an outlet for the grit and a substantially cylindrical recess for receiving a brush roll which is rotatably mounted and driven about a substantially horizontal axis of rotation for the metered delivery of the grit from the feed inlet to the outlet. At least one wedge is arranged in the region of the feed inlet for the grit, in front of the brush roll and tangentially and displaceably with respect to the brush roll so that the size of the feed inlet can be adjusted.

An anti-skid arrangement for a vehicle is disclosed. The anti-skid arrangement includes a friction wheel including a hub and a ring arranged around the hub, and a chain plate attached to the hub, wherein the chain plate includes several chains intended to be thrown under the tire in order to increase friction between the tire and the ground. The hub includes two parts clamping the ring. Further, an inner side of the ring is provided with grooves extending in a tangential direction along the ring and facing each hub part, and the two parts are provided with protrusions engaging the grooves. The engagement between the tangential grooves and the protrusions in the hub will secure the ring firmly, even when the tread of the ring is worn down.

A low impact turf wheel for significantly reducing the adverse effects of frequent travel over turf by a lawn mower includes a wheel rim having an inner and outer surface, a hub arranged within the wheel rim, wherein the hub includes a central portion for mounting the turf wheel, and a plurality of spaced apart stems extending perpendicularly outward from the outer surface of the wheel rim. The stem includes a stem surface extending perpendicularly to the stem and a lug extending radially outward from the stem surface. The lug includes a lug face parallel to the stem surface, wherein the combination of the stem surface and lug face provide a ground contacting tread.

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. The wheel assembly may also include inboard lateral stops carried by an inboard interior surface of the outer rim, and outboard lateral stops carried by an outboard interior surface of the outer rim so that the inboard lateral stops and the outboard lateral stops cooperate to limit relative lateral movement of the disk and the outer rim.

A wheel apparatus for a self-propelled irrigation system has a center portion, a rim assembly, and a support structure disposed between the center portion and the rim assembly. The rim assembly has a plurality of rigid members spaced apart from each other with longitudinal axes that are parallel with each other and equidistant from the axis of rotation. The rigid members are cylindrical with unsupported ends, and a mounting portion between the ends is connected to an outer periphery of the support structure. The rigid members are held in a fixed position relative to the center portion by the support structure. The rigid members are arranged to contact the ground surface to support the irrigation system with spaces between the rigid members allowing mud and debris to pass freely between the rigid members during operation to enhance traction while minimizing mud from being forced out of a wheel track.

A wheel traction surface in the event of a vehicle experiencing a lack of traction during an emergency, while experiencing conditions such as snow, rain, ice, or being stuck in a ditch. The wheel traction surface includes a support surface, wherein the support surface is flat and configured to support a vehicle. The wheel traction surface includes a plurality of securing members configured to grip or drive into a ground surface, wherein the securing members are positioned on a first side of the support surface. The wheel traction surface includes a plurality of studs configured to grip on or more tires of the vehicle, on a second side of the support surface.

A portable escape device is provided for self-rescue in the case of an auto tyre being trapped in a pit. The portable escape device includes support posts, a clamping device fitted to the support posts, and a jacking device fitted to the clamping device. The support posts are fixedly mounted onto spokes. The clamping device clamps an auto tyre. The jacking device protrudes and extends out of a top face of a tyre portion. The portable escape device can release the trapped auto tyre and perform self-rescue fast and reliably, and it is convenient to carry.