The invention relates to a tread (1) for a tyre intended for being fitted on the drive axle of a heavy goods vehicle, said tread including a plurality of circumferential grooves (2) defining at least three ribs (4, 5, 6) each having a height and a width measured in the axial direction, the tread (1) being defined axially by two edge rows (7, 8), each rib (4, 5, 6) being provided with a plurality of incisions (41, 51, 61) capable of closing at least partially when passing in contact with a road surface, said incisions (41, 51, 61) opening onto each side surface of the rib such as to form two edges and having a depth at least equal to 50 % the height of the rib, said incisions (41, 51, 61) defining two-by-two a basic rib space (40, 50, 60) as well as a basic contact surface (400, 500, 600), said tread being characterised in that a hollow space (42, 52, 62) is formed on each basic space (40, 50, 60) defined by two incisions of a single rib, opening onto the contact surface when new, said hollow space (42, 52, 62) having a total area relative to the tread surface equal to 0.4 % to 1.5 % of the area of the basic contact surface (400, 500, 600) of said hollow space, said hollow space (42, 52, 62) having a depth equal to at least half the depth of the grooves, and in that said hollow space (42, 52, 62) is determined such as to remain open when passing in contact in order to enable the catchment of liquid that may be present on the road surface.


    Access

    Download


    Export, share and cite



    Title :

    Tread for tyre of a drive axle of a heavy goods vehicle and tyre


    Contributors:

    Publication date :

    2015-04-01


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B60C VEHICLE TYRES , Fahrzeugreifen




    TYRE TREAD FOR HEAVY GOODS VEHICLE TYRE HAVING IMPROVED INCISIONS

    DOMPROBST FREDERIC / COLLET ETIENNE / LARREGAIN ARNAUD | European Patent Office | 2021

    Free access

    Tread and tyre for heavy vehicle

    MARTIN VINCENT / BARDIN DAMIEN / HOUIS CATHERINE | European Patent Office | 2015

    Free access

    TYRE TREAD, AND TYRE

    KANEKO SHUICHI | European Patent Office | 2015

    Free access

    TYRE TREAD

    KURAKIN ALEXANDER / SANTANGELI FABIO / AMENTA ALESSANDRO | European Patent Office | 2023

    Free access