Abstract: A tyre for vehicle wheels comprises a support structure and a tread band arranged in a radially outer position with respect to the support structure. The support structure comprises a plurality of hybrid reinforcing cords (10) each having a plurality of monofilament textile wires (20) twisted to at least one multifilament textile yarn (30). In any cross section of the hybrid reinforcing cord (10), at least one portion of at least one monofilament textile wire (20) of said plurality of monofilament textile wires (20) defines a first radially outer surface portion of the hybrid reinforcing cord (10) and at least one portion of said at least one multifilament textile yarn (30) defines a second radially outer surface portion of the hybrid reinforcing cord (10).

Abstract: A tyre for vehicle wheels comprises a support structure and a tread band arranged in a radially outer position with respect to the support structure. The support structure comprises a plurality of hybrid reinforcing cords (10). Each of the hybrid reinforcing cords (10) has at least two strands (20) twisted together with a predetermined twisting pitch. Each of said at least two strands (20) comprises at least one monofilament textile wire (21) and at least one multifilament textile yarn (22) comprising a plurality of textile filaments (22a). In any cross section of the hybrid reinforcing cord (10), said at least one monofilament textile wire (21) is at least partially embedded in the filaments (22a) of said at least one multifilament textile yarn (22).

Abstract: A tyre (1) for motorcycles comprises a carcass structure (2), a belt structure (10) applied in radially outer position with respect to the carcass structure (2), a tread band (11) applied in radially outer position with respect to the belt structure (10), wherein the carcass structure (2) comprises at least one carcass ply (3). The carcass ply (3) comprises a plurality of reinforcing cords (20) comprising a first end (21) and a second end (22) twisted together, wherein the first end (21) is a hybrid yarn (23) comprising a plurality of first filaments (24) mixed with a plurality of second filaments (25), wherein the filaments of the plurality of first filaments (24) are made from a single material having a first modulus and wherein the filaments of the plurality of second filaments (25) are made from a single material having a second modulus different from the first modulus.

Abstract: Motorcycles tyre including a carcass structure, a zero-degree belt structure arranged in a radially outer position with respect to the carcass structure and a tread band arranged in a radially outer position with respect to the belt structure. The belt structure includes at least one hybrid reinforcing cord that has an elongation greater than 4% when subjected to a load equal to about 50 N and a tangent modulus with a monotonic progression as the elongation increases for elongations comprised between 4% and at least 9%.

Abstract: Motorcycles tyre including a carcass structure, a zero-degree belt structure arranged in a radially outer position with respect to the carcass structure and a tread band arranged in a radially outer position with respect to the belt structure. The belt structure includes at least one hybrid reinforcing cord that has an elongation greater than 4% when subjected to a load equal to about 50 N and a tangent modulus with a monotonic progression as the elongation increases for elongations comprised between 4% and at least 9%.

Abstract: A tyre for wheels of vehicles, includes a belt structure including a radially outer circumferential belt layer of the belt structure including a plurality of hybrid reinforcement cords arranged according to a substantially zero angle with respect to the equatorial plane of the tyre, each of the hybrid reinforcement cords being formed by two aromatic polyamide fibre yarns and by a polyester and/or aliphatic polyamide fibre yarn wherein each of the aromatic polyamide fibre yarns has a linear density less than or equal to about 1500 dTex and an initial modulus equal to or greater than about 6000 cN/tex measured in accordance with the BISFA standard, testing methods for para-aramid fibre yarns, 2002 edition.

Abstract: A tire includes at least one structural element which includes at least one reinforcing element which includes at least one hybrid yarn, the at least one hybrid yarn including a plurality of filaments obtained from at least one first multifilament yarn having a first initial tangent modulus and at least one second multifilament yarn having a second initial tangent modulus, the first and the second initial tangent modulus being different from each other, each one of the first and the second multifilament yarn including a plurality of individual filaments, the individual filaments of each one of the first and the second multifilament yarns being at least partially intermixed with each other. The tire may be a high performance or ultra high performance tire, or a tire suitable for being employed in sporting contests such as track motor races, or a tire suitable for sports utility vehicles.

Abstract: A tire includes at least one structural element which includes at least one reinforcing element, which includes at least one hybrid yarn, the at least one hybrid yarn including a plurality of filaments obtained from at least one first multifilament yarn having a first initial tangent modulus and at least one second multifilament yarn having a second initial tangent modulus, the first and the second initial tangent modulus being different from each other, each one of the first and the second multifilament yarns including a plurality of individual filaments, the individual filaments of each one of the first and the second multifilament yarns being at least partially intermixed with each other. Preferably, the tire is a high performance or ultra high performance tire, or a tire suitable for being employed in sporting contests, such as, track motor races, or a tire suitable for sports utility vehicles.

Abstract: Performance and comfort is increased in a tyre for vehicle wheels by assembling a tyre which includes a belt structure including at least one radially external reinforcing layer including a plurality of cords disposed at a substantially zero angle relative to a circumferential extension direction of the tyre. Each of the cords includes cellulose fibres, such as rayon, and aliphatic polyamide fibres, such as nylon.

Abstract: A tire includes at least one structural element which includes at least one reinforcing element which includes at least one hybrid yarn, the at least one hybrid yarn including a plurality of filaments obtained from at least one first multifilament yarn having a first initial tangent modulus and at least one second multifilament yarn having a second initial tangent modulus, the first and the second initial tangent modulus being different from each other, each one of the first and the second multifilament yarn including a plurality of individual filaments, the individual filaments of each one of the first and the second multifilament yarns being at least partially intermixed with each other. The tire may be a high performance or ultra high performance tire, or a tire suitable for being employed in sporting contests such as track motor races, or a tire suitable for sports utility vehicles.

Abstract: The present invention relates to a method of increasing the high-speed performance of a carcass structure in a tyre for vehicle wheels. The method includes: preparing at least one hybrid yarn (13) and assembling a carcass structure (2) comprising at least one carcass ply (3a, 3b) substantially built on cords (12) comprising the hybrid yarn (13). The hybrid yarn (13) comprises a plurality of filaments (14a, 15a) obtained from a first multi-filament yarn (14) of polyester and a second multi-filament yarn (15) having a decay of the modulus with the temperature lower than 20%. Each of the first multi-filament yarn (14) and second multi-filament yarn (15) comprises a plurality of individual filaments (14a, 15a). The individual filaments (14a) of the first multi-filament yarn (14) are at least partly mixed in proportions of at least 50% with the individual filaments (15a) of said second multi-filament yarn (15).

Abstract: A tire includes at least one structural element which includes at least one reinforcing element which includes at least one hybrid yarn, the at least one hybrid yarn including a plurality of filaments obtained from at least one first multifilament yarn having a first initial tangent modulus and at least one second multifilament yarn having a second initial tangent modulus, the first and the second initial tangent modulus being different from each other, each one of the first and the second multifilament yarn including a plurality of individual filaments, the individual filaments of each one of the first and the second multifilament yarns being at least partially intermixed with each other. Preferably, the tire is a high performance or ultra high performance tire, or a tire suitable for being employed in sporting contests such as track motor races, or a tire suitable for sports utility vehicles.

Abstract: A tire includes a carcass structure of a substantially toroidal shape, having opposite lateral edges terminating in respective bead structures; a belt structure applied in a radially external position with respect to the carcass structure, the belt structure including at least one belt layer, a tread band radially superimposed on the belt structure; a pair of sidewalls applied laterally on opposite sides with respect to the carcass structure, wherein the at least one belt layer includes at least one reinforcing cod including a core including at least one first elongated element including at least one composite material, the composite material including a plurality of elongated fibers embedded in a polymeric material, the core being wrapped with at least one second elongated element including at least one elementary metal wire.

Abstract: A tire includes a carcass structure of a substantially toroidal shape, having opposite lateral edges associated with respective right-hand and left-hand bead structures, the bead structures including at least one bead core and at least one bead fiber; a belt structure applied to a radially external position with respect to the carcass structure, a tread band radially superimposed on the belt structure; a pair of sidewalls applied laterally on opposite sides with respect to the carcass structure; wherein the at least one bead core includes at least one first elongated element including at least one composite material including a plurality of elongated fibers embedded in a polymeric material, the composite material having a flexural modulus, measured according to Standard ASTM D790-03, at 23° C., not lower than or equal to 10 GPa, preferably 20 GPa to 200 GPa and at least one second elongated element including at least one metal wire.

Abstract: A tire has a piezoelectric flexing element associated with an energy storage device (e.g., a capacitor). The piezoelectric flexure element is mounted in cantilever fashion in a housing so as to be positioned substantially along a plane orthogonal to a radial direction of the tire and, so that a first end of the piezoelement is restrained by the housing. A loading mass is coupled to the second end of the piezoelectric flexure element. A small gap is formed between the inner walls of the housing and the outer surface of the loading mass in order to allow limited flexure of the piezo-electric element. The housing including the piezoelectric is mounted in a tire portion in correspondence of a tread area of the tire, preferably on the inner surface of the tire. The piezoelectric element flexes under the action of the radial acceleration when the tire rotates.

Abstract: A tyre has a piezoelectric flexing element associated with an energy storage device (e.g., a capacitor). The piezoelectric flexure element is mounted in cantilever fashion in a housing so as to be positioned substantially along a plane orthogonal to a radial direction of the tyre and, so that a first end of the piezoelement is restrained by the housing. A loading mass is coupled to the second end of the piezoelectric flexure element. A small gap is formed between the inner walls of the housing and the outer surface of the loading mass in order to allow limited flexure of the piezo-electric element. The housing including the piezoelectric is mounted in a tyre portion in correspondence of a tread area of the tyre, preferably on the inner surface of the tyre. The piezoelectric element flexes under the action of the radial acceleration when the tyre rotates.