TIRE AND TIRE MOULDING TIRE Russian patent published in 2016 - IPC B60C11/00 

FIELD: motor car construction.

SUBSTANCE: claimed tire has multiple ledges shaped to hemisphere on at least the portion of the tire tread. Note here that every recess of the tire features width of 0.22-50 mcm wherein the ledges feature different height H and ODs. Claimed mould comprises the tire tread moulding surface and multiple recesses of hemispherical shaped on at least the portion of the tread moulding surface. Every ledge features the width of 0.22-0.50 mcm, recesses having the different OD d and depth h.

EFFECT: higher performances on ice and snow.

2 cl, 14 dwg, 2 tbl