TREAD BLOCK SYSTEM CONTAINING SLIT-LIKE CUTOUT Russian patent published in 2022 - IPC B60C11/12 

FIELD: car industry.

SUBSTANCE: tread block system (200) contains tread block (220, 222, 224, 240, 242, 244, 230, 250, 210, 212, 214, 216, 218) limiting first primary slit-like cutout (420). First primary slit-like cutout (420) contains at least first deep section (424₁) and second deep section (424₂) separated from first deep section (424₁) by first non-deep section (422₁). Depth (d2₁) of first deep section (424₁) is at least three times greater depth (d1) of first non-deep section (422₁), and depth (d2₂) of second deep section (424₂) is at least three times greater depth (d1) of first non-deep section (422₁). First deep section (424₁) is limited in longitudinal direction (LS) of first primary slit-like cutout (420) by primary first end wall (E1₁) and secondary first end wall (E2₁), so that first angle (α₁) between primary first end wall (E1₁) and secondary first end wall (E2₁) is from 1 to 30 degrees. Second deep section (424₂) is limited in longitudinal direction (LS) of first primary slit-like cutout (420) by primary second end wall (E1₂) and secondary second end wall (E2₂), so that second angle (α₂) between primary second end wall (E1₂) and secondary second end wall (E2₂) is from 1 to 30 degrees.

EFFECT: improvement of tire grip on the road.

15 cl, 8 dwg