A vehicle wheel includes a rim, an inflatable tire, a grounding tire, and a safety unit. The rim includes two tire engagement portions spaced from each other in a longitudinal direction. The inflatable tire is mounted around the rim and includes an inner annular bottom wall and two inner annular sidewalls respectively on left and right sides of the inner annular bottom wall. Each inner annular sidewall includes an inner side having a lip pressing against one of the tire engagement portions of the rim. The grounding tire is mounted around the inflatable tire and includes an outer annular bottom wall capable of rolling contact with the ground. The safety unit is sandwiched between the inflatable tire and the grounding tire to couple the inflatable tire and the grounding tire together, permitting synchronously rotation of the inflatable tire and the grounding tire while increasing the anti-slipping effect.

To obtain a tire anti-slip device including an anti-slip body having a tread portion making contact with the ground, inner and outer link portions formed to protrude respectively from the tread portion to the tire inner and outer sides, and a tightener configured to tightly fit the body to the tire, and can prevent removal of the body from the tire inner or outer side direction in the tightener operation so that the tire anti-slip device can be mounted to a tire optimum position with a simple manipulation, a wire guide portion capable of guiding the tightening wire in the body width direction is formed in a position of one end portion of the body, and one end position (of the wire guide member) and the other end position of the body approach each other in both positions of the inner and outer link portions by tightening the tightening wire.

To obtain a tire anti-slip device including an anti-slip body having a tread portion making contact with the ground, inner and outer link portions formed to protrude respectively from the tread portion to the tire inner and outer sides, and a tightener configured to tightly fit the body to the tire, and can prevent removal of the body from the tire inner or outer side direction in the tightener operation so that the tire anti-slip device can be mounted to a tire optimum position with a simple manipulation, a wire guide portion capable of guiding the tightening wire in the body width direction is formed in a position of one end portion of the body, and one end position (of the wire guide member) and the other end position of the body approach each other in both positions of the inner and outer link portions by tightening the tightening wire.

An extended-life tire chain and method of extending the life of a tire chain. An extended-life tire chain has a plurality of chain links, a plurality of twin clevises each secured to two of the links, and a plurality of clevis pins each having a head on one of its extremities. Each twin clevis has two receptacles. Each clevis pin is removably disposed in a different one of the receptacles. The twin clevises are oriented such that, when the tire chain is installed on a tire, the heads project radially away from a tread surface of the tire.

An extended-life tire chain and method of extending the life of a tire chain. An extended-life tire chain has a plurality of chain links, a plurality of twin clevises each secured to two of the links, and a plurality of clevis pins each having a head on one of its extremities. Each twin clevis has two receptacles. Each clevis pin is removably disposed in a different one of the receptacles. The twin clevises are oriented such that, when the tire chain is installed on a tire, the heads project radially away from a tread surface of the tire.

The present invention relates to a novel snow chain device for providing good traction to a vehicle tire on a snowy surface. The device is capable of being removably mounted on the tire with reduced physical effort and in multiple configurations. The device can be used in modular fashion and a range of patterns and configurations making it suitable for use on different tires as well as under varying driving conditions. Also it is possible to cover the entire surface of the tire as well as a partial surface. The device comprises of a plurality of link members and a plurality of base members. The base members can be affixed to the external tire surface and the link members can be removably secured to the base members.

The invention relates to an anti-skid chain, in particular for forestry and agricultural vehicles. The anti-skid chain is to permit high traction, while it has a low weight and can be easily mounted. It should simultaneously be permitted for driving on roads. To enable this, an anti-skid chain to be attached to two wheels with tires disposed one behind the other at fixed distances, in particular for the two wheels of a tandem axle, is provided according to the invention. The anti-skid chain comprises two lateral, laterally stable guide chains which are located, in the mounted state, laterally of the tread of the tires. Between the two guide chains, a chain mesh with chain strands extends. Preferably, the chain mesh is subdivided into ladder sections which are only connected to each other via the guide chain. Joint points of the guide chains are located in a radial position between the radius of the tire shoulder and the tire center. The guide chains are in particular embodied as plate link chains.

The invention relates to an anti-skid chain, in particular for forestry and agricultural vehicles. The anti-skid chain is to permit high traction, while it has a low weight and can be easily mounted. It should simultaneously be permitted for driving on roads. To enable this, an anti-skid chain to be attached to two wheels with tires disposed one behind the other at fixed distances, in particular for the two wheels of a tandem axle, is provided according to the invention. The anti-skid chain comprises two lateral, laterally stable guide chains which are located, in the mounted state, laterally of the tread of the tires. Between the two guide chains, a chain mesh with chain strands extends. Preferably, the chain mesh is subdivided into ladder sections which are only connected to each other via the guide chain. Joint points of the guide chains are located in a radial position between the radius of the tire shoulder and the tire center. The guide chains are in particular embodied as plate link chains.

A tire assembly includes: a wheel connected to a vehicle, and including a first groove formed in the wheel; a tire coupled to the wheel, and including a second groove, connected to the first groove, formed therein; and an anti-skid member including first and second end portions coupled to the wheel, and movably accommodated in the first groove and the second groove, wherein the tire includes a tread contacting with the ground and a sidewall extending from first and second sides of the tread and coupled to the wheel, wherein the tire assembly is configured to transform to a hide state in which at least a portion of the anti-skid member is located inwardly of a surface of the tread or to a pop-up state in which the at least a portion of the anti-skid member protrudes from the surface of the tread.

A tire assembly includes: a wheel connected to a vehicle, and including a first groove formed in the wheel; a tire coupled to the wheel, and including a second groove, connected to the first groove, formed therein; and an anti-skid member including first and second end portions coupled to the wheel, and movably accommodated in the first groove and the second groove, wherein the tire includes a tread contacting with the ground and a sidewall extending from first and second sides of the tread and coupled to the wheel, wherein the tire assembly is configured to transform to a hide state in which at least a portion of the anti-skid member is located inwardly of a surface of the tread or to a pop-up state in which the at least a portion of the anti-skid member protrudes from the surface of the tread.