PNEUMATIC TYRE Russian patent published in 2017 - IPC B60C11/03 B60C11/13 

FIELD: automotive engineering.

SUBSTANCE: tread pattern includes a plurality of central ground-engaging grooves (14), spaced along the circumference of the tyre and intersecting the equatorial line of the tyre; a plurality of shoulder ground-engaging grooves (12A, 12B), disposed along the circumference of the tyre in the spaces between the plurality of central ground-engaging grooves in the circumferential direction of the tyre and extending outwards in the transverse direction of the tyre. The inner end in the transverse direction of the tyre is located outside the end of the central ground-engaging groove in the transverse direction of the tyre; a pair of longitudinal primary grooves (11A, 11B) extending along the entire circumference of the pneumatic tyre over the ondulating profile, and the ends of the central ground-engaging grooves and the inner ends of the plurality of shoulder ground-engaging grooves in the transverse direction of the tyre are alternately connected to a pair of longitudinal primary grooves (11A, 11B); and a longitudinal secondary groove (10) located on the equatorial line of the tyre along the entire circumference of the pneumatic tyre and intersecting the central ground-engaging grooves.

EFFECT: improving the resistance to warming up in the running area in the central zone of the tread.

16 cl, 8 dwg, 2 tbl