Patent ID: 7703490

Claim:
Tire tread comprising elements in relief, each element in relief comprising a running face and at least two lateral faces, at least one element in relief being provided with two incisions intersecting the running face from one end to the other of each incision when the tread is new, each incision defined along a mean plane, wherein the tread comprises a plurality of holes, oriented in a mean direction, passing through said element in relief substantially parallel to said mean planes and spaced from said incisions, wherein opposite ends of each of the holes open onto respective lateral faces of said element in relief, wherein between the two incisions the holes are distributed along at least a pair of planes which are substantially parallel to one another and parallel to the respective mean planes of the incisions, the holes being distributed alone a region situated between the running surface of the tread and a bottom of at least one of the incisions, the holes arranged such that they zigzag from one of said pair of planes to the other, wherein each incision is defined by two side surfaces, one of the side surfaces having portions thereof overlying respective portions of the other side surface, wherein the incision is self-locking when the portions of the side surfaces are forced together in response to compression of the element in relief.