The invention relates to a tyre including a tread (1) having a tread surface (10) provided with a tread design comprising at least one undulating groove (2) in the body of the tread, said undulating groove (2) being made up of a plurality of portions (21) which are visible when new and a plurality of hidden portions (22) intended for only opening onto the outside following a predetermined degree of partial wear of the tread, the hidden portions (22) having a bottom (220), the hidden portions (22) and the open portions (21) being arranged in alternation, each hidden portion (22) being connected to two open portions (21) via intermediate portions (231, 232) providing continuity between said portions, said tyre being such that at least one platform (3) having a height P and a length L measured between two ends (31, 32) is moulded on the bottom (220) of at least one hidden portion (22) and near an intermediate portion (231), in order to be used as a wear limit indicator. In addition, the intermediate portion (231) closest to the wear limit indicator has a geometry that is suitable for allowing the platform (3) to be at least partially viewed from the outside when new at a viewing angle of at most 45 degrees, said angle being measured relative to a direction perpendicular to the tread surface (10) when new. Moreover, the volume of said intermediate portion (231) differs from the volume of the intermediate portion (232) furthest from the indicator.
PNEU POUR POIDS LOURD AVEC DISPOSITIF INDICATEUR D'USURE
TYRE FOR A HEAVY GOODS VEHICLE COMPRISING A WEAR INDICATOR
REIFEN FÜR SCHWERLASTKRAFTWAGEN MIT VERSCHLEISSANZEIGE
2020-03-25
Patent
Electronic Resource
French
IPC: | B60C VEHICLE TYRES , Fahrzeugreifen |
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