Abstract: An “all season” tyre (1) for cars and/or light transport vehicles is described, having a tread band (8) provided with a plurality of longitudinal channels and a plurality of grooves (6, 7, 11, 12, 13) and sipes (21, 22, 23, 24, 25) having a substantially transverse course, regularly arranged in the central ribs formed by the longitudinal channels and in the shoulder regions (L2, L3) over the whole tread band (8). The tread band (8) also has transverse notches resulting from joining a groove and a sipe having a transverse course, arranged consecutively to each other, and seamlessly extending substantially over the whole portion of the tyre containing them, i.e., the shoulder regions (L2, L3) or some of the central ribs (9, 10).

Abstract: The invention relates to a metallic reinforcing cord (10) for tyres for vehicle wheels, comprising a single metallic wire (11) extending along a substantially helical path to form a helix having a predetermined pitch (Pw) and, in at least some cross sections thereof, an inner diameter (Di) greater than, or equal to, 0.7 mm.

Abstract: Method (200), and related system (100), for monitoring a status of a tyre (99) fitted on a vehicle, the method (200) comprising: —in a first operative phase with the tyre (99) in a reference status: —during an advancement of the vehicle, acquiring (3) at least one first signal representative of a motion of a crown portion (31) of the tyre (99); —obtaining (4) a first frequency spectrum of the at least one first signal, the first frequency spectrum comprising a first plurality of peaks; —identifying (5) a first determined peak in the first plurality of peaks and determining a first frequency of the first determined peak; —in a second operative phase subsequent to the first operative phase: —during an advancement of said vehicle, acquiring (6) a second signal representative of the motion of the crown portion (31); —obtaining (7) a second frequency spectrum of the second signal, the second frequency spectrum comprising a second plurality of peaks; —identifying (8) a second determined peak in the second plurality

Abstract: After a support structure (12) has been circumferentially positioned around an annular component (11) of a tyre (2), gripping elements (16) carried by the support structure (12) and circumferentially distributed around a central axis (X) are radially approached to the annular component (11) bringing into contact therewith a plurality of feeler pins (22), slidably carried by each of said gripping elements (16). Once contact is made, the radially approaching of the gripping elements (16) to the annular component (11) continues by sliding the gripping elements themselves along the feeler pins (22). All the feeler pins (22) can therefore come into contact with the annular component (11), copying the shape of the outer surface. The feeler pins (22) are then locked with respect to the gripping elements (16) in order to allow the removal of a support drum (10) from the annular component (11) and support the latter in the absence of normal stresses.

Abstract: The present invention is relative to a method for building tyres for vehicle wheels and to a transfer device (16) of an apparatus for building tyres for vehicle wheels. The centring device (16) comprises: an annular support structure (18); gripping elements (19) arranged as a ring on the annular support structure (18) and having gripping surfaces (20) directed radially towards a longitudinal axis (Z-Z) of the transfer device (16); a measurement device (30) mounted on the annular support structure (18). The measurement device (30) is configured for detecting the centring between the transfer device (16) and a drum (12, 13) situated within the transfer device (16). The transfer device (16) is configured for picking up the tyre being processed (14, 15) from the drum (12, 13) on which the tyre being processed is arranged or for depositing a tyre being processed (14, 15) on the drum (12, 13).

Abstract: In a shaping station (13), a toroidal forming drum (23) is positioned within a carcass sleeve (12) comprising at least one carcass ply (3) associated with a pair of beads (6) in radially inner position. The carcass sleeve (12) is toroidally shaped by radial expansion of the forming drum (23). The forming drum (23) carrying the shaped carcass sleeve (12) is removed from the shaping station (13). Tyre components (7, 8, 9) are applied externally on the shaped carcass sleeve (12), carried by the forming drum (23). At the end of the shaping and during the application of the tyre components (7, 8, 9), axially inner sides of said beads (6) are arranged axially against respective circumferential axially outer portions (S1) of an abutment surface (S) carried by the expanded forming drum (23), having shape corresponding to an inner shape of the shaped carcass sleeve (12).

Abstract: Method (200), and related system (100), for monitoring a status of a tyre (99) fitted on a vehicle, the method (200) comprising: —with said vehicle in motion and said tyre in rotation, acquiring (3) a motion signal representative of a motion of a crown portion (31) of the tyre (99), the motion signal temporally corresponding to a plurality of turns of the tyre (99); —obtaining (4) a frequency spectrum of the motion signal; —determining (11) the status of the tyre (99) based the frequency spectrum, wherein the motion signal is representative of an axial component of the motion of the crown portion (31).

Abstract: Tyre (100) for all-terrain vehicles having a tread band (2) comprising: —a central annular portion (A1), located across the equatorial plane (X-X), and two shoulder annular portions (A2, A3), separated from said central annular portion (A1) by two circumferential grooves (3, 4); said central annular portion (A1) having at least one circumferential row (8) of central blocks, comprising a plurality of central blocks (20), and at least two rows (9, 10) of lateral blocks, opposed to each other relative to said at least one circumferential row (8) of central blocks, and comprising a plurality of lateral blocks (21), wherein —said central blocks (20) have a first and a second portion (20a; 20b) located opposite to each other relative to the equatorial plane (X-X); —said central blocks (20) and said lateral blocks (21) have a circumferential dimension greater than 2% of the development extension of the tread of the tyre; —said lateral blocks (21) have an elongate portion (13) and a head portion (14) located at an en

Abstract: The present invention relates to a compound represented by the formula (II): CB-O-ROS-GC-Zn (II) where CB represents the white filler, O represents one or more oxygen bridge bonds, ROS represents an organo-silane residue, GC represents one or more coordinating groups forming a chelate with zinc in ionic form represented by linear, branched or cyclic alkyl chains, comprising one or more heteroatoms inside or at the end of the alkyl chain, and Zn represents zinc in ionic form coordinated with the coordinating groups, a process for the preparation thereof, and the use thereof in the vulcanisation process of elastomeric compounds.

Abstract: Tyre (10) comprising a monitoring device (1) which comprises a housing portion (2) and a base portion (3), the base portion (3) having a coupling surface (4) in single piece intended for fixing the monitoring device to the tyre, wherein the monitoring device (1) comprises an electronic unit (8) housed in the housing portion (2), wherein the monitoring device (1) is fixed to an inner surface (15) of the tyre (10) at a crown portion (16) of the tyre by an adhesive (6) interposed between the coupling surface (4) and the inner surface (15), wherein a first region (12) of the coupling surface (4) is covered by the adhesive (6) and a second region (13) of the coupling surface (4), complementary to the first region (12), is free of adhesive (6), and wherein the second region (13) is contained within a projection (5) of the housing portion (2) onto the coupling surface (4).

Abstract: The invention relates to a metallic reinforcing cord (10) for tyres for vehicle wheels, comprising from two to ten metallic wires (11) twisted together with a twisting pitch (P) and each having a predetermined diameter. In at least some cross sections of the metallic reinforcing cord (10), at least two of said metallic wires (11) are arranged to a minimum mutual distance greater than, or equal to, 2.5 times the predetermined diameter.

Abstract: Apparatus for applying noise reducing elements to tyres for vehicle wheels. The apparatus includes a loading station of stacks of noise reducing elements, an extraction station of noise reducing elements from each stack placed downstream of the loading station, and a conveyor placed downstream of the extraction station and extending along a predefined path. The conveyor is configured for supporting and advancing in a row the noise reducing elements extracted from the stacks which are then applied to a radially inner surface of the tyres. The extraction of each of the noise reducing elements contemplates: retaining a first noise reducing element placed at the base of a stack; raising the remaining noise reducing elements of the stack from the first noise reducing element; moving away the first noise reducing element according to a set path; and lowering the remaining noise reducing elements of the stack.

Abstract: A green tyre (2) for bicycles is built, comprising at least one carcass ply (4) having axially opposite end flaps (4a) engaged with respective bead cores (5) and a tread band (6) applied in a radially outer position around said at least one carcass ply (4). The built tyre (2) removed from the building drum, is profiled so as to translate the tread band (6) in a radially outer direction with respect to the bead cores (5), so as to impart a cross-sectional convex profile to the tyre (2) in a radially outer direction. The profiled tyre is engaged by means of a transfer member (31) comprising a gripping device (30) which retains it at the radially outer surface (2b) so as to maintain said cross-sectional convex profile in a radially outer direction.

Abstract: The present disclosure is directed to a tyre with a monitoring device fixed on an inner surface at a crown portion, wherein the monitoring device includes an electronic unit and an electric power supplier, wherein the electronic unit includes a sensor for detecting at least one of temperature, pressure, acceleration, deformation; a processing unit; a transceiver, wherein the monitoring device includes a flexible support on which the electronic unit and the electric energy supplier are fixed, and wherein an acute angle (A) formed between a main development direction (L) of the flexible support and a direction of intersection of the equatorial plane of the tyre with the inner surface of the tyre is greater than or equal to 20° and lower than or equal to 70°.

Abstract: A green tyre (2) for bicycles is built, comprising at least one carcass ply (4) having axially opposite end flaps (4a) engaged with respective bead cores (5) and a tread band (6) applied in a radially outer position around said at least one carcass ply (4). The green tyre (2) removed from the building drum, is profiled so as to translate the tread band (6) in a radially outer direction with respect to the bead cores (5), so as to impart a cross-sectional convex profile to the tyre (2) in a radially outer direction. The profiled tyre is engaged by means of a transfer member (31) while the tyre itself is mechanically restrained so as to maintain at least partly said cross-sectional convex profile in the radially outer direction.

Abstract: A car tyre (1), in particular a high or ultra high performance car tyre also suitable for use on track, is described. The tread band (8) of the tyre has a central region (L1) having a limited extension, separated from two large shoulder regions, respectively an outer shoulder region (L2) and inner shoulder region (L3). At least the outer shoulder region (L2) and the central region (L1) have a set, limited in type, number, size and extension, of transverse grooves. In the tread band (8) there are also annular portions (S1, S2, M) substantially lacking grooves such that the void-to-rubber ratio being zero.