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.

The device will be placed on the outside surfaces of the tire of a car or truck in the event that the car or truck is stuck either in sand or other soft surface or pothole. On either end of the device will be a pair of shoes or flat surfaces that will grip the surface as the tire begins to rotate. Once the tire is safely out of the problem area and back on a sold road surface, the device is removed and then stowed. The device can be used on any tire of any type of vehicle.

The device will be placed on the outside surfaces of the tire of a car or truck in the event that the car or truck is stuck either in sand or other soft surface or pothole. On either end of the device will be a pair of shoes or flat surfaces that will grip the surface as the tire begins to rotate. Once the tire is safely out of the problem area and back on a sold road surface, the device is removed and then stowed. The device can be used on any tire of any type of vehicle.

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.

An escape device for self-rescue in the case of an auto tyre being trapped in a pit includes 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 a wheel. 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 for self-rescue 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.

The invention relates to a tyre valve for a pneumatic tyre of a vehicle, having a valve stem extending from the air inlet end to the air outlet end and having an outside thread on its outside circumference and a collar at its air outlet end for a rim well carrying the pneumatic tyre and a fastening thread for an air pressure sensor or other device to be fastened to the valve stem and positioned inside the pneumatic tyre, exhibiting a union nut with an inside thread for screwing onto the outside thread in order to clamp the rim base between the union nut and the collar, with the valve stem being inserted through a rim bore, with a plastic valve cap, with a deformable element located on the outside circumference of the valve stem and/or an inside circumference of the union nut. The tyre valve according to the invention is characterised in that the union nut and, if the deformation element is located on the inside circumference of the union nut, also the deformation element, exhibit a minimum inside diameter that exceeds the maximum outside diameter of the valve cap.

A method for providing additional tractionability to a vehicle tire (20) for mitigating slippery road conditions such as ice and snow. The main embodiment for the main embodiment uses three cleats (26) per tire (20) and a cleat hub (28). Chain welts (32) and adjustable bungee cords (30) complete the install to form a contiguous unit gripping around the perimeter of the tire (20). All of the individual parts are lightweight for easy distribution to the tires (20) needing traction. They are easy to install. They are quick to install at roughly five minutes per tire (20). They are also both easy and quick to dismantle. Being solid bodied members, they are easy to keep clean by quickly hosing them down and they stack up for easy storage.

A traction enhancing device for a vehicle includes a plurality of spikes that is coupled to and extends from an outer face of a panel that is bendable and configured to conform to a circumference of a tire. A plurality of first straps and a plurality of second straps are coupled to a first edge and a second edge of the panel, respectively. Each second strap and an associated first strap are configured to loopedly position around the tire and a rim of a vehicle. Each of a plurality of first couplers and each of a plurality of second couplers are coupled to a respective first strap and a respective second strap, respectively, distal from the panel. Each second coupler is positioned to couple to an associated first coupler to couple the panel to the tire, positioning the spikes to insert into a substrate to increase traction of the tire.

Illustrative embodiments of systems and methods for improving traction of a bicycle are disclosed. The invention described are traction loops comprised of a strap having projections extending therefrom. The loops are fastened around the width of the tire using a fastening device. The loops may be easily applied and removed to provide the rider with flexibility to use the loops on slicker surfaces and remove them when riding on drier surfaces. The loops may further be easily stored on the bike when not in use.

The invention relates to a crawler-type adjustable anti-skid device for vehicles which can be quickly connected. The device includes a support base, a crawler mechanism and a transmission mechanism. The support base includes a support plate, a side plate, a guide plate disposed above the support plate, a guide rail, a connecting member, a baffle and a guide cable. The crawler mechanism includes a crawler wheel, a crawler body and a single type of hydraulic cylinder. The transmission mechanism is symmetrically arranged on the support plate. The device has simple and reasonable structure, easy to use, automatic positioning, safe and reliable and can be quickly installed, and does not need extra modification, etc. which effectively solves the problem that vehicles lack safe and reliable anti-skid device which can be quickly connected.