Method for checking the formation of beads of tyres including: arranging a carcass sleeve with formed beads with the carcass sleeve in rotation, acquiring at least an image of a circumferential portion of external surface including the respective edges of the end flaps turned up; processing the image in order to determine a circumferential trend of the axial distance of each edge from an axial reference plane; and detecting possible defects of the beads as a function of such trend.

An apparatus configured to be removably attached to a tire/hub assembly of a vehicle via lug nuts of the tire/hub assembly is used to determine imbalance forces of the tire/hub assembly during motion of the vehicle. The apparatus includes a disk and a plurality of cup-shaped objects fixed at one end to the disk and extending perpendicularly outward from the disk. The plurality of cup-shaped objects are arranged a fixed radial distance from a radial center of the disk in a pattern that matches the lug nuts of the tire/hub assembly. The apparatus is mounted to the vehicle's tire/hub assembly by fitting the plurality of cup-shaped objects over the lug nuts of the tire/hub assembly. The apparatus further includes one or more inertial measurement units (IMU's) mounted to the disk to measure parameters that are used for calculating the imbalance forces during motion of the vehicle.

An apparatus configured to be removably attached to a tire/hub assembly of a vehicle via lug nuts of the tire/hub assembly is used to determine imbalance forces of the tire/hub assembly during motion of the vehicle. The apparatus includes a disk and a plurality of cup-shaped objects fixed at one end to the disk and extending perpendicularly outward from the disk. The plurality of cup-shaped objects are arranged a fixed radial distance from a radial center of the disk in a pattern that matches the lug nuts of the tire/hub assembly. The apparatus is mounted to the vehicle's tire/hub assembly by fitting the plurality of cup-shaped objects over the lug nuts of the tire/hub assembly. The apparatus further includes one or more inertial measurement units (IMU's) mounted to the disk to measure parameters that are used for calculating the imbalance forces during motion of the vehicle.

A tire including a rubber sheet which covers an end of the carcass ply which has been folded back and an RFID tag serving as an electronic component provided between the bead filler and the rubber sheet, in which the bead filler is formed in an annular shape, the rubber sheet is formed in an annular shape by one end side and another end side of a long sheet being joined, and the RFID tag serving as the electronic component is disposed between the bead filler and the rubber sheet at a joint part which is a portion of the rubber sheet which is joined.

A bladder control assembly for a tire curing press includes an upper and lower clamp rings for clamping a bladder therebetween. The bladder is shaped with curing media to cure a tire enclosed between a top and bottom mold. An upper ring cylinder and one or more lower ring cylinders actuates the upper clamp ring and at least the lower clamp ring, respectively. A curing media supply and drain arrangement includes an outer pipe telescopically engaged to an inner pipe and the inner pipe is configured to supply the curing media to the bladder. The inner pipe moves within the outer pipe during actuation of the lower ring cylinders. The outer pipe is fixed to a cylinder guide by an outer pipe flange which is configured to house a seal provided at the area joining the outer pipe and the inner pipe.

A tire (1) comprises a crown zone (4) comprising a crown reinforcement (41) surmounted radially on the outside by a tread (40) formed from at least one material that is not a conductor of electricity, the crown reinforcement (41) comprising a plurality of layers (411, 412, 423) superposed on one another, each layer of the crown reinforcement comprising two ends in the circumferential direction, these two ends being joined together in an abutment region, the tread (40) comprising a weld region circumferentially offset by an angle of 180 degrees with respect to the region at which the radially outermost layer of the crown reinforcement (413) is superposed. The tire comprises at least one conducting strip (7) of a thickness at most equal to 2 mm and of small width, positioned between the tread and the crown reinforcement. The conducting strip (7) is located circumferentially in such a way as to be positioned at equal angular distances between the tread weld region and the region at which the radially outermost reinforcing layer is butted together, these two regions being diametrically opposite.

A plant (2) for building tyres comprises a system for managing initial components (3); a system for managing the manufacturing of semi-finished products (4) starting from one or more initial components; a system for managing the building of a green tyre (5) starting from one or more semi-finished products; a system for managing the curing of said green tyre (6). The logical set of a control unit (8) for the plant (2) and/or of one or more from among control units (8a-8e) for the management systems (3-6) and/or of a automatic visual control system (7) is programmed for controlling at least two parameters, assigning to each of these a quality index (I), discarding a tyre being processed when a quality index (I) corresponding to said discard level (5) is assigned to at least one of said parameters and feedbacking the control result of at least one parameter in order to verify the quality index (I) of the parameters.

Method for checking the formation of beads of tyres including: arranging a carcass sleeve with formed beads with the carcass sleeve in rotation, acquiring at least an image of a circumferential portion of external surface including the respective edges of the end flaps turned up; processing the image in order to determine a circumferential trend of the axial distance of each edge from an axial reference plane; and detecting possible defects of the beads as a function of such trend.

A method is provided for collecting measurement parameters related to imbalance forces of a tire/hub assembly of a vehicle during motion of the vehicle. An apparatus is removably attached to the tire/hub assembly of the vehicle via lug nuts of the tire/hub assembly. The apparatus includes a disk, a plurality of cup-shaped objects, and one or more inertial measurement units (IMU's) mounted to the disk. Each of the cup-shaped objects are rigidly fixed at one end to the disk and extend perpendicularly outward from the disk. The plurality of cup-shaped objects are arranged a fixed radial distance from a radial center of the disk in a pattern that matches the lug nuts of the tire/hub assembly. The one or more inertial measurement units (IMU's) are mounted to the disk and configured to measure parameters that are used for calculating the imbalance forces during motion of the vehicle.

A plant for building tires includes a system for managing initial components; a system for managing the manufacturing of semi-finished products starting from one or more initial components; a system for managing the building of a green tire starting from one or more semi-finished products; and a system for managing the curing of said green tire. The logical set of a control unit for the plant and/or of one or more from among control units for the management systems and/or of an automatic visual control system is programmed for controlling at least two parameters, assigning to each of these a quality index, discarding a tire being processed when a quality index corresponding to said discard level is assigned to at least one of said parameters and feedbacking the control result of at least one parameter in order to verify the quality index of the parameters.