BigPatents India

A device to be fitted on a vehicle wheel (1) in order to increase the friction between the wheel and the road surface during winter conditions, comprises a belt (3) that can encircle the tread (4) of the wheel (1) and be held in place by means of flexible inner and outer side portions (5, 8). The inner side portion (5) is tightened on the inner side of the wheel by means of an elastic member (7). The internal circumference of the belt (3) is at least 4 % larger, preferably 5-6 % larger than the largest circumference of the wheel (1). The belt (3) can be made substantially of a woven polyamide material. The outer side portion (8) of the device (2) can be fully covering or be provided with one or more openings, and may in addition be provided with radially extending straps (9) in order to facilitate fitting the device (2) to the vehicle wheel (1) or removing it therefrom. A method for such fitting without lifting the wheel (1) from the road surface is also disclosed. Drawing: 7 Sheets. Total Pages: 20 Fig. 1A, 1B, 1C