Pneumatic tire having tapered tie bars

Details Pneumatic tire having tapered tie bars Pneumatic tire having tapered tie bars

B - Operations, Transporting

60

C

B60C 11/13 (2006.01) B60C 11/03 (2006.01) B60C 11/11 (2006.01)

Patent

CA 2456139

A pneumatic tire includes a tread pattern having circumferential and lateral grooves (10) forming a plurality of circumferentially extending ribs (3), each rib having a plurality of tread blocks (9). A plurality of tie bars (16,17) extend circumferentially across certain of the lateral grooves (10) between adjacent tread blocks in at least two of the ribs (3) which are located equally opposite of a mid-circumferential plane of the tire. The tie bars (16) have a pair of sidewalls and a sloped top surface (27) with the slope of the top surface in one of the ribs (3) being opposite to the slope (28) of the tie bars (17) in the other rib (3) to generate a residual aligning torque (RAT) on the tire.

L'invention concerne un pneumatique comprenant une sculpture présentant des rainures (10) latérales et longitudinales formant une pluralité de nervures (3) s'étendant de manière circulaire. Chaque nervure présente une pluralité de pavés (9). Plusieurs bandes de roulement (16, 17) s'étendent de manière circulaire à travers certaines des rainures latérales (10) entre des pavés adjacents dans au moins deux des nervures (3) situées à équidistance en face d'un plan circulaire médian du pneumatique. Les bandes de roulement (16) présentent une paire de parois latérales et une surface supérieure (27) inclinée, l'inclinaison de la surface supérieure dans l'une des nervures (3) étant située face à l'inclinaison (28) des bandes de roulement (17) dans l'autre nervure (3), de manière à produire un couple résiduel d'alignement (RAT) sur le pneumatique.

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