Patent ID: 9527350
Filing Date: 2016-12-27
CPC Classification: B60C

Claim Text:
1. A tire for driving on ice, comprising: a tread having a rolling surface configured to come into contact with the ground when the tire is rolling along; at least one substantially cylindrical stud having a longitudinal axis, a part of the stud projecting from a tread block on the rolling surface, the intersection between the stud and the plane tangential to the portion of the rolling surface around the stud forming a contour C, that part of the stud that projects from the rolling surface having a minimum cross section Sm, Sm corresponding to the smallest cross section of the said part in any plane containing the radial direction that passes through the point of intersection between the longitudinal axis of the stud and the plane tangential to the portion of the rolling surface around the stud; and at least two recesses in the tread block, each recess forming, on the rolling surface, a closed contour G, the recesses being associated with the stud in that the minimum distance D between the contours C and G is less than or equal to 1 cm; wherein, for each stud, the sum of the volumes Vn of the recesses associated with the stud, expressed in mm