PNEUMATIC TIRE Russian patent published in 2013 - IPC B60C11/03 B60C11/04 

FIELD: transport.

SUBSTANCE: invention relates to automotive industry, namely, to tread pattern. Proposed tire 1 comprises tread 2 with central section L1 located on both sides of equatorial plane 7, and sections 8, 12 in two shoulders. Central section L1 is separated from parts 8, 12 in shoulders by two circular grooves 3, 6, and has, at least, one circular rib 9 arranged between first and second grooves 3, 4. Tread 2 features void factor smaller than 0.28. Rib 9 comprises transverse grooves 16 extending on distance making, at least, 50% of tread width. Note here that said transverse grooves 16 comprises, at least, one curvilinear section. Note also that said grooves 16 have width smaller than that of circular grooves 3, 4, while, at least, one of circular grooves that makes circular rib, has, at least, one lateral wall that makes wavy profile.

EFFECT: better bite.

28 cl, 7 dwg, 1 tbl