Pirelli Tyre S.p.a.

Laura Erbizzoni

Pierangelo Misani

Paolo Brivio

Vinicius Augusto Dal Bello Lindo

The present invention relates to a tyre for bicycle wheels comprising a tread band containing an anti-puncture system capable of offering high resistance to the penetration of foreign bodies. In particular, the present invention relates to a tyre () for bicycle wheels comprising: &#x2014;a carcass structure (); and &#x2014;a tread band () arranged in a radially outer position with respect to said carcass structure (); characterised in that said tread band () is made by vulcanisation of a vulcanisable elastomeric compound comprising fibrillated polymeric fibres of micrometric dimensions, wherein at least one protective layer () is interposed between said carcass structure () and said tread band (), said protective layer () comprising (i) a plurality of reinforcing cords of textile material oriented with respect to the equatorial plane of the tyre with an angle greater than 30&#xb0;, (ii) a square fabric with textile fibres of the weft or warp oriented with respect to the equatorial plane of the tyre with an angle greater than 20&#xb0;, or (iii) a non-woven fabric with randomly oriented textile fibres.

Tyre for bicycle wheels

A bicycle tyre (), comprising a carcass structure () and a tread band () applied in a radially outer position with respect to the carcass structure (). The tread band () comprises a crown portion () extending astride of an equatorial plane (X) of the tyre () and having a predetermined radius of curvature (R) and a pair of lateral portions () arranged on axially opposite sides with respect to the crown portion () and each having a second radius of curvature (R) greater than said first radius of curvature (R).

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Milan, Italy

Laura Erbizzoni