Pirelli Tyre S.p.a.

Prometeon Tyre Group S.r.l.

Tommaso Pizzorno

Claudio Minoli

Daniele Lorenzetti

Alessandro Ascanelli

Ciro Raia

Tyre () for heavy load vehicle wheels, having a tread band () comprising: &#x2014;a plurality of circumferential grooves (); &#x2014;a plurality of transverse grooves () extending between two axially consecutive circumferential grooves (), thus defining a plurality of blocks (); &#x2014;each block () comprising a radially outer top surface () and having a height (M) measured between said top surface and a bottom surface of a respective transverse groove (); &#x2014;said transverse grooves () comprising a first segment () having a width Land a second segment () having a width L, where L&#x3c;L; &#x2014;said first segment () being at least partially delimited by walls of two circumferentially consecutive blocks (); &#x2014;at least one filling element () contained within said first segment (); &#x2014;said at least one filling element () having a radially outer top surface (), located radially inwardly relative to said top surface () of the block at a radial distance (D) between 5% and 50% of the height (M) of the blocks (); &#x2014;the plan surface area (A) of said top surface () of said at least one filling element () being greater than 60% of the plan surface area (Ai) of said first segment (); &#x2014;said at least one filling element () being spaced apart from said walls () along at least 70% of its perimeter (P).

Tyre for heavy load vehicle wheels

Tire tread having embedded blocks

A tire includes a tread provided with blocks formed among substantially longitudinal and transverse grooves, wherein among the blocks particularly broad intersections are formed, for example, by staggering substantially transverse grooves of circumferential rows axially in side-by-side relationship, of blocks with rounded corners, and wherein, inside such broad intersections, a stocky-shaped protrusion is arranged which has a lateral stiffness greater than the lateral stiffness of the surrounding blocks.

Car tire

Growing community of inventors

Milan, Italy

Tommaso Pizzorno