PNEUMATIC TYRE FOR HIGH-LOAD VEHICLES Russian patent published in 2017 - IPC B60C11/03 B60C11/13 

FIELD: automotive engineering.

SUBSTANCE: tyre tread includes shoulder ground-engaging grooves (10), that are open at the edges; central ground-engaging grooves (14), having both ends; longitudinal primary grooves (12), formed with an ondulating profile and alternately connected by the ends of the central ground-engaging grooves to the inner ends of the shoulder ground-engaging grooves in the transverse direction of the tyre; central blocks (16), that are formed in one row, defined by the central ground-engaging grooves and a pair of longitudinal primary grooves; and longitudinal secondary grooves (20), formed in the areas of the central blocks and connecting the central ground-engaging grooves, that are disposed adjacent to the circumferential direction of the tyre. The longitudinal secondary grooves have bending portions (21a, 21b), and the central ground-engaging grooves have bending portions (14a, 14b) of the ground-engaging grooves and are connected to the longitudinal secondary grooves on the bending portions of the ground-engaging groove.

EFFECT: prevention of heel and toe wear of the tread with simultaneous improvement of traction characteristics.

17 cl, 6 dwg, 6 tbl