Michelin Recherche Et Technique S.a.

Compagnie Generale Des Etablissements Michelin

Societe Detechnologie Michelin

Jean-Marc Viller

Murielle De-Tullio

Bopha Grisin

The invention relates to a tire comprising at least two working layers () and at least one layer of circumferential metal reinforcing elements (). According to the invention, the layer of circumferential reinforcing elements consists of at least one central part () and two axially external parts (), the reinforcing elements of the central part of at least one layer of circumferential reinforcing elements being reinforcing elements cut so as to form sections (), the length of the sections being less than 550 mm, the distance (d) between the ends of two consecutive sections being greater than 25 mm, the length of the sections being between 1.1 and 13 times the distance between the ends of two consecutive sections and the reinforcing elements of the two axially external parts () being continuous.

Tire for heavy vehicles, comprising a layer of circumferential reinforcing elements consisting of a central part and two axially external parts

Tire reinforcement () having a bi-material structure of reinforcing elements that consists of at least a plurality of extensible first reinforcing elements () and at least a plurality of inextensible second reinforcing elements (), these first and second reinforcing elements being mutually parallel and distributed alternately in appropriate proportions in order to achieve the desired level of reinforcement, these first and second reinforcing elements lying within the same mean plane, this reinforcement being such that the extensible first reinforcing elements () are coupled to the inextensible second reinforcing elements () over a coupling length Lc which is shorter than the length Lof the extensible first reinforcing elements () so that, with each of the first and second reinforcing elements having two ends, at least one of the ends of the extensible first reinforcing elements () is offset in relation to the two ends of the inextensible second reinforcing elements ().

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Riom, France

Jean-Marc Viller