PNEUMATIC TIRE Russian patent published in 2012 - IPC B60C11/04 B60C11/11 B60C11/12 

FIELD: transport.

SUBSTANCE: invention relates to winter tires. Tire comprises two central lengthwise grooves. It comprises also first transverse grooves connected with central lengthwise grooves and have inclination varying to opposite in tire lengthwise direction. It has second transverse grooves extending from central grooves toward edges of tire tread, their inclination opposed to equator both sides across the tire. Two shoulder lengthwise grooves that, along with central lengthwise grooves and second transverse grooves, confine tire blocks. Also its has auxiliary grooves crossing said blocks in lengthwise direction to connect second transverse grooves and extend in direction orthogonal to transverse groove inclination.

EFFECT: better characteristics on snow.

3 cl, 2 dwg