Tire having a light weight belt structure

Abstract

Tire comprising: a carcass structure of a substantially toroidal shape, having opposite lateral edges terminating in respective bead structures; a belt structure applied in a radially external position with respect to said carcass structure, said belt structure comprising at least one belt layer; a tread band radially superimposed on said belt structure; a pair of sidewalls applied laterally on opposite sides with respect to said carcass structure; wherein said at least one belt layer comprises at least one reinforcing cord comprising a core including at least one first elongated element comprising at least one composite material, said composite material including a plurality of elongated fibers embedded in a polymeric material, said core being wrapped with at least one second elongated element comprising at least one elementary metal wire. Preferably, said tire is a high performance (HP) or ultra high performance (UHP) tire, or a tire suitable for being employed in sporting contests such as track motor races.

Description

technical field [0001] The present invention relates to tires having a lightweight belt structure. [0002] More particularly, the present invention relates to high performance tires, such as tires designed for use in high horsepower automobiles, or more generally, to tires for applications involving high operating speeds and / or extreme driving conditions. [0003] In more detail, the invention relates to high performance (HP) or ultra high performance (UHP) tyres, as well as tires suitable for use in sports competitions such as track racing. [0004] In more detail, the invention relates to a tire comprising a belt structure comprising at least one belt layer comprising at least one reinforcing cord comprising a wire core, The core comprises at least one elongated element made of composite material around which at least one elongated element of metal is wound. [0005] Furthermore, the invention relates to a reinforcing cord comprising a core comprising at least one elongat...

AI Technical Summary

Problems solved by technology

However, these tires generally have several problems, such as a large amount of steel used, which increases the rolling resistance of the tire, and a heavy weight of the belt layer, which allows the centrifugal force in the process to become large to cause sideslip and reduce high-speed durability.

In addition, rust can form from penetrating water and / or external moisture, causing tires to break

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