PNEUMATIC TIRE, TREAD LAYER AND TREAD BLOCK CONTAINING SLIT-LIKE SLOT, AS WELL AS LAMELLAR PLATE FOR ITS MANUFACTURE Russian patent published in 2023 - IPC B60C9/12 

FIELD: car industry.

SUBSTANCE: pneumatic tire (90), tread layer (100) for a pneumatic tire, or tread block (200) for a tread layer or for a pneumatic tire, which are equipped with slit-like slots (21) are described. At least some of slit-like slots (21) are opened at upper end (TOP) with access to a surface of tread block (200). Intersection of slit-like slot (21) with surface (107a, 107b), which is geometrically congruent and parallel to the surface of tread block (200) and is located at depth (d) measured from the surface of tread block (200) inward tread block (200), forms curve line (210). At least first slit-like slot (21) of slit-like slots (21) is formed so that, at all depths (d) from the opened top (TOP) of first slit-like slot (21) to first transition depth (d1), curve line (210) contains at least one bending point (22a) having inner angle (220a), which has a curvature radius of less than 0.3 mm. Lamellar plate (43, 53, 63, 73, 83) for the manufacture of pneumatic tire (90), tread layer (100), or tread block (200) is described. The use of lamellar plate (43, 53, 63, 73, 83) for the manufacture of tread block (200), tread layer (100), or pneumatic tire (90) is also described.

EFFECT: improvement of pneumatic tire grip on the road.

14 cl, 12 dwg