PNEUMATIC TIRE Russian patent published in 2012 - IPC B60C11/11 B60C11/12 B60C11/13 

FIELD: transport.

SUBSTANCE: pneumatic tire includes groove (1), outer main grooves (2) and transversal grooves (3), separating multiple tire checkers (5) located in central part of tread (C), and ribs (6) of tire shoulder (S) contain grooves of cleat (4). Transversal grooves (3) located at both sides of central main groove (1) in transversal direction are mutually tilted in opposite sides relative to equator of tire. Tilt angle of transversal grooves (3) to central part (θ1) is sharp. Transversal grooves (3) at both sides of central main groove (1) are located with certain shift relative to each other in longitudinal direction, so that along the whole circumference of tire the longitudinal component of transversal groove (3'), i.e. transversal groove (3) projection on longitudinal direction of tire is located. Checkers (5) and ribs (6) of tread contain slots (7) forming directional pattern.

EFFECT: better tire tread characteristics on wet road surface and on snow, higher wear resistance.

10 cl, 7 dwg, 2 tbl