Tire tread having uneven groove walls

B - Operations – Transporting – 60 – C

Patent

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Details

B60C 11/13 (2006.01) B60C 11/04 (2006.01) B60C 11/12 (2006.01)

Patent

CA 2344409

A tread for a tire includes at circumferentially extending grooves having side walls contoured with upper and lower waveforms that are relatively staggered, or out of phase. The side walls provide alternating protrusions and recesses relative to a perpendicular reference plane passing through upper edges of the groove. A cavity is provided beneath upper groove edges for the entire circumference of the tread, which imparts flexibility and helps avoid the initiation of rail wear.

Une bande de roulement destinée à un pneu comprend des rainures circonférentielles dont les contours des parois latérales présentent des formes ondulées inférieures et supérieures lesquelles sont décalées ou déphasées les unes par rapport aux autres. Les parois latérales présentent des parties saillantes et des creux alternés par rapport à un plan de référence perpendiculaire passant par les bords supérieurs de la rainure. Une cavité est ménagée sous les bords supérieurs de la rainure sur toute la circonférence de la bande de roulement, ce qui confère une flexibilité et contribue à éviter le début d'une usure de type rail.

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