CAR TIRE TREAD AND PLATE FOR FIXATION IN VULCANISATION MOULD FOR FORMATION OF THREE-DIMENSIONAL SLIT IN TIRE TREAD BLOCK Russian patent published in 2024 - IPC B60C11/12 

FIELD: tires.

SUBSTANCE: present inventions relate to tread design, preferably, of a winter car tire. At least one of the blocks is equipped with one or more shaped three-dimensional slit-like slots in the radial direction. Shaped slot-like slot is limited by two mutually matching shaped surfaces – sides of the slit-like slot formed by the plate during vulcanisation. Each side of the three-dimensional slit has a complex shape of alternating periodically repeating sawtooth elongated sinusoidal arc-shaped element, introduced in the direction of the radial plane, interrupted in the radial direction at a certain interval and replaced with a sawtooth sinusoidal surface formed from the same periodically repeating element, wherein said alternating surfaces are shifted by 1/2 period to form 3D slit-like slots whose angles with the radial plane are 60°±10°. During the moulding process, the plate of the vulcanisation mould of the corresponding design forms narrow slit-like slots of the required shape and in the required quantity in the tread blocks on the tread section of the main invention.

EFFECT: improving the performance of the tire on wet, dry and snowy surfaces.

6 cl, 4 dwg, 1 tbl