WINTER TIRE Russian patent published in 2013 - IPC B60C11/11 B60C11/117 B60C11/12 

FIELD: process engineering.

SUBSTANCE: invention relates to automotive industry, namely, to winter tire tread pattern. Proposed tire comprises tread with circular central region wherein blocks are located as symmetric patter on opposite sides of circular equatorial plane of the tire. Tread comprises one or several circular recesses confined by edges of opposite blocks. Pair of two opposite block comprises block edge facing said recess and row of tenons formed along the edges of opposite blocks facing the recess and inclined radially. Tenons on the edge of one opposite block are inclined in direction opposite that on opposite block teeth inclination. Block on tread central zone recess side comprises multiple transverse pads spaced apart in circle toward lateral side. Said pads extend to line of teeth along block edge facing the recess and are leveled therewith.

EFFECT: better tread adhesion in winter.

10 cl, 10 dwg