TREAD DESIGN FOR WINTER TYRE Russian patent published in 2008 - IPC B60C11/11 B60C11/12 

FIELD: transport.

SUBSTANCE: tyre for vehicle wheel contains tread band having tread pattern formed by at least two annular parts located in axial direction placed near each other. At least annular part have first geometric module repeated many times along direction of annular tyre length. First geometric module contains at least two shoulder blocks levelled-off in annular direction along side edge of tread band and separated by grooves positioned across annular outstretch direction of tyre and elongated ridge limited by two grooves inclined against annular outstretch direction. Elongated ridge is separated into many interim blocks with regard to axial outstretch of tread band separated by number of slots made essentially across elongated ridge.

EFFECT: tyre performance characteristics are improved.

58 cl, 7 dwg, 2 tbl