B - Operations – Transporting – 60 – C
Patent
B - Operations, Transporting
60
C
B60C 11/12 (2006.01) B29D 30/06 (2006.01)
Patent
CA 2569581
The invention relates to a tyre tread having a design comprising a plurality of relief elements (1) in the form of blocks and/or ribs which are defined by grooves. According to the invention, a plurality of the relief elements are equipped with at least one incision which is oriented along an average orientation that is defined as the angle between a straight line passing through the ends of the incision on the running surface and the transverse direction of the tread. Moreover, each incision is defined by rubber compound walls and comprises at least two portions having average orientations which are different from the average orientation of the incision, said average orientations being measured in relation to the transverse axis. The inventive tread is characterised in that at least one protuberance (10) is formed on at least one of the incision-defining walls on at least some of the above-mentioned portions having an average orientation that is different from that of the incision, said protuberance locally reducing the width of the incision by at least 50 % of the greatest width (E) thereof.
Bande de roulement pour pneumatique comprenant une sculpture composée d'une pluralité d'éléments de relief (1) sous forme de blocs et/ou de nervures délimités par des rainures, une pluralité de ces éléments de relief étant pourvus d'au moins une incision orientée selon une orientation moyenne définie comme étant l'angle entre une droite passant par les extrémités de l'incision sur la surface de roulement et la direction transversale de la bande de roulement, chaque incision étant délimitée par des parois de mélange de caoutchouc et comprenant au moins deux portions dont les orientations moyennes, mesurées par rapport à la direction transversale sont différentes de l'orientation moyenne de l'incision, cette bande étant caractérisée en ce que sur au moins certaines desdites portions ayant une orientation différente de l'orientation moyenne de l'incision, il est formé, sur au moins une des parois délimitant l'incision, au moins une protubérance (10) réduisant localement la largeur de l'incision d'au moins 50% de sa plus grande largeur (E).
Martin Bruno
Michaudet Elisabeth
Mus Jean-Marie
Perrin Frederic
Michelin Recherche Et Technique S.a.
Robic
LandOfFree
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