Tire tread including incisions
AssigneeCompagnie Generale des Etablissements Michelin - Michelin & Cie
InventorAlain Lagnier
Life of this patent
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Abstract
A tire tread (10) comprising at least some elements in relief, provided w at least one incision (1), each of the facing walls P of which has a surface in relief, formed of protrusions (2) and of cavities (3) arranged on opposite sides of a central wall surface M, each of such protrusions (2) and cavities (3) having, on said central surface (M), a quadrilateral base (b.sub.S, b.sub.C) and a vertex (S, O', A', B', C') spaced from said surface, the base b.sub.S of a protrusion (2) being completely surrounded by bases b.sub.C of cavities (3).
Claims10
A tire tread (10) comprising elements in relief provided with incisions (1), characterized by the fact that at least certain elements in relief are provided with at least one incision (1) each of the facing walls P of which is a surface in relief, formed of protrusions (2) and cavities (3) arranged on both sides of a central wall surface (M), each of said wall protrusions (2) and cavities (3) having, on said central wall surface (M), a quadrilateral base (b.sub.S, b.sub.C) and a vertex (S, O', A', B', C') spaced from said central wall surface (M), the base b.sub.S of a protrusion (2) being completely surrounded by bases b.sub.C of cavities (3) and conversely the base b.sub.C of a cavity (3) being completely surrounded by bases b.sub.S of protrusions (2), the two surfaces in relief of the two walls P respectively being identical so as to form the incision (1) having a width e.
Dependencies are inferred from the claim text.