SPIKED TIRE Russian patent published in 2017 - IPC B60C11/16 

FIELD: automotive industry.

SUBSTANCE: tire comprises a tread with annular grooves running in the tire circumferential direction and with spur grooves extending in the direction intersecting the annular grooves, the annular grooves and spur grooves limit the sett in which the stud holes are formed. Each sett with a stud hole includes an internal groove from the oncoming side and a separate internal groove from the run-off side separated from it. Each of the two ends of each internal groove is within the sett and all internal grooves are made in an area delimited by two circles of different radius coaxial with the stud hole in the sett. The tire also includes connecting grooves connecting the internal grooves with spur grooves only from the oncoming side of the sett.

EFFECT: increased controllability of the vehicle with the adherence of crushed ice to the pointed studs of the tire.

4 cl, 10 dwg, 1 tbl