PNEUMATIC TIRE TREAD Russian patent published in 2003 - IPC

FIELD: tire industry. SUBSTANCE: invention relates to design of tread of pneumatic tires used on wheeled vehicles, particularly, on quarry dump trucks providing high road-holding capacity. Invention solves the problem of increasing grip of pneumatic tire tread with road. For this purpose cross grooves are made in S-shaped grousers in staggered order at a distance of 0.2-0.3 of width of tread cap from axis of symmetry, depth of grooves being 100-80% of depth of tread pattern. Grousers are made widening towards base. EFFECT: improved road-holding capacity of tire tread. 3 dwg