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 tire rim of a motor vehicle includes a substantially cylindrical body for holding a tire, and a hub connected to the body through radial members, and has an outer face facing, in use, the outside of the vehicle, and an opposite inner face. At least one elongate flexible element associated with the rim can reach a resting configuration within the rim, and a working configuration, extended with respect to the resting configuration, of such a length as to allow the tire to be surrounded, in which each flexible element is wound around the tire to form a snow chain. The rim includes at least one retaining member at a zone of its inner face, to be engaged by a portion of a flexible element in its working configuration.

Wheel hub adaptor (11) attachable to vehicle wheel to attach vehicle accessory for rotation with vehicle wheel, has an inner mounting plate (15) with recesses or apertures (17) to match a vehicle wheel stud pattern, a body (19) extending from the plate (15) to an outer mounting plate (27) having a mount to which the vehicle accessory attaches. The mount has apertures (65) which align with studs (75) on a mating mount of the vehicle accessory. The inner mounting plate and the outer mounting plate mount to the vehicle wheel and vehicle accessory respectively, by rotating apertures (17 65) to stop portions (35 71), and is secured by a bolt passing through one of two circular apertures (43 45) or (67 69). Vehicle accessories can be provided like a paddle to self-propel the vehicle in sand, and a wheel to widen the vehicle track.

A traction device for installation between a set of dual wheels on a vehicle, the traction device including a wheel attachment plate, at least one leg and at least one paddle. The wheel attachment plate is centrally coupled between each of the wheels. The at least one leg is coupled to the wheel attachment plate between the wheels. The at least one paddle is coupled to the leg and positioned radially outward from the wheel attachment plate.

Wheels have controllable suction devices for adhesion on surfaces. The wheel has an axle and an outer circumferential surface. The outer circumferential surface has a plurality of apertures and a plurality of stretchable materials. Each aperture has a respective stretchable material therein. Rotating the wheel moves a first stretchable material adjacent to a surface of a structure. A portion of the first stretchable material moves in the direction radial to the axle, to control adhesion of a portion of the outer circumferential surface to the surface of the structure. A method implements use of the wheel to adhere to the surface of the structure.

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.

Disclosed is an escape device for self-rescue in the case of an auto tyre being trapped in a pit, comprising a central positioning device, at least one tyre claw and a jacking device. The central positioning device is positioned and mounted at a central position of spokes of a tyre. The tyre claw and the central positioning device are fitted to each other and are clamped onto the tyre. The jacking device and the tyre claw are fitted to each other. The jacking device is further provided with a jacking head in contact with the pit ground. The jacking head protrudes out of an external rim of the tyre. The escape device can carry out effective rescue for trapped tyres, is convenient and fast to assemble and disassemble, saves time and energy, improves driving safety, and reduces the occurrence of accidents.

Disclosed is a portable escape device for self-rescue in the case of an auto tyre being trapped in a pit, comprising 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 for self-rescue in the case of an auto tyre being trapped in a pit can release the trapped auto tyre and perform self-rescue fast and reliably, and is convenient to carry.

The anti slip device for automobile wheels with wheel discs arranged at inner side plain of the wheel, load-bearing part of which is attachable to the wheel from the outside. The extensible body is placed slidingly in the direction parallel to the wheel axis on the load-bearing part. There are arms fulcrumed on the extensible body around axes parallel to the wheel axis. The arms are fitted, at their ends, with surfaces of engagement, which bear against the tire peripheral surface in the working position. The extensible body is placed on the load-bearing part in the guidance, which comprises at least two pipes, with one outer pipe placed slidingly on each of the pipes and attached to the extensible body. There are tensile springs arranged in the pipes, and these springs are attached by one end to the load bearing part, and by the other end to the extensible body.

An improved wheel system that can be connected to existing wheels of a container to provide additional stability and/or ease of use during the movement of the container.