Pirelli Tyre S.p.a.

Prometeon Tyre Group S.r.l.

Claudio Minoli

Daniele Lorenzetti

Alessandro Ascanelli

Emiliano Resmini

Tommaso Pizzorno

Fabio Montanaro

Ciro Raia

Laura Canevini

Mario Martin

Fabio Mario Montanaro

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

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

A tire includes a tread band having a tread pattern defined by a plurality of grooves of substantially circumferential orientation and by a plurality of grooves of substantially transverse orientation, which grooves delimit a plurality of rubber blocks arranged in a plurality of rows of substantially circumferential orientation, each of the blocks being delimited by a contact face and at least three side faces, wherein at least some of the blocks include at least one side face of substantially transverse orientation provided with at least one irregularly shaped step having an upper face and a front face.

Tire tread comprising blocks with stepped sidewalls

Growing community of inventors

Milan, Italy

Claudio Minoli