Heavy Goods Vehicle Tire with Complex Tread Pattern
AssigneeCompagnie General Des Etablissements Michelin
InventorsFabien MARLIER, Tony ZIVKOVIC
Life of this patent
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Abstract
A heavy-duty vehicle tire with complex tread pattern, and is intended to improve the resistance to irregular wear of the tread thereof. The tire (1) has a tread (2) with at least one circumferential complex cut (6) formed by an alternation of external cavities (7) and internal cavities (8), each external cavity (7) having a length (L1), wherein the length (L1) of each external cavity (7) is equal to at least 1.5% and at most 12% of the external diameter (D) of the tire (1), as measured on the tire when new and free.
Claims8
A tire for a heavy-duty vehicle comprising a tread intended to come into contact with the ground via a tread surface, comprising cuts delimiting raised elements,
- at least one cut being a circumferential complex cut with a midline extending in a circumferential direction (XX′) of the tire, and comprising, when the tire is new, an alternation of external cavities opening onto the tread surface and internal cavities not opening onto the tread surface, two consecutive cavities, respectively an external cavity and an internal cavity, being connected to each other by a connecting channel,
- each external cavity having a length (L1) measured along the midline on the tread surface of the tire when new and free,
- wherein the length (L1) of each external cavity is equal to at least 1.5% and at most 12% of the external diameter (D) of the tire, as measured on the tire when new and free.
Dependencies are inferred from the claim text.