Tire for a civil-engineering vehicle
AssigneeCompagnie Generale Des Etablissements Michelin
InventorsOlivier Goncalves, Jean-François Olagnon
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Abstract
A tire for a heavy vehicle of civil engineering type, intended to be fitted onto a rim, is provided. The nominal diameter of the tire is at least equal to 25 inches. The tire comprises a tread having a radial thickness HT at least equal to 30 mm. The tread has a composition based on at least one diene elastomer, a reinforcing filler predominantly comprising a filler at least partially covered with silica, an agent for coupling the filler to the at least one diene elastomer and a crosslinking system. The dispersion of the filler in the elastomeric matrix has a Z score of greater than or equal to 70.
Claims18
A tire configured for a heavy vehicle of civil engineering type, the nominal diameter of the tire being at least equal to 25 inches, the tire comprising:
- a tread having a radial thickness HT at least equal to 30 mm, and the tread having a composition based on at least one diene elastomer, a reinforcing filler predominantly comprising a filler at least partially covered with silica, an agent for coupling the filler to the at least one diene elastomer and a crosslinking system, wherein the at least one diene elastomer and the reinforcing filler predominantly comprising a filler at least partially covered with silica are mixed in order to form a masterbatch, and the dispersion of the filler in the elastomeric matrix has a Z score of greater than or equal to 70, the Z score being measured according to the method described by S. Otto et al. in Kautschuk Gummi Kunststoffe, 58 Jahrgang, NR 7-8/2005, and in agreement with Standard ISO 11345.
Dependencies are inferred from the claim text.