| 主权项 |
1. A tread made of rubber material for a snow tire comprising:
a tread surface adapted to be in contact with a road surface when the tire is being driven on, a plurality of cuts delimited by walls situated facing one another and forming lateral walls of raised elements of the tread, each of the said lateral walls intersecting the tread surface to form an edge corner, wherein at least one lateral wall of a raised element is formed partially or fully by a cover layer extending from the edge corner associated with this lateral wall, wherein the material of this cover layer has an elastic modulus higher than an elastic modulus of the rubber material of which the tread is made, wherein the raised element comprises, in its lateral wall, a depression of depth P, this depression being delimited by the cover layer, wherein with the raised element having a width W, the depth P of the depression is at least equal to 10% of the width W of the element and less than or equal to 40% of this width W, and wherein the volume of the depression is less than 10% of the volume of the raised element. |
