A tire includes a bead core; a bead filler which extends to an outer side in a tire-radial direction of the bead core; a carcass ply which extends from the bead core to another bead core, and is folded back around the bead core; a pad member which is disposed at an outer side in a tire-width direction of the bead filler; and a rubber sheet which is disposed between the bead filler and the pad member in a state covering a folding end of the carcass ply which has been folded back, in which an RFID tag serving as an electronic component is provided between the rubber sheet and the pad member.

In the tire 2, fillers 10 are layered over clinches 8 in portions outward of a carcass 14 in the axial direction. A carcass ply 50 is turned up around cores 44. Turned-up portions 50a are disposed between the fillers 10 and apexes 46. Each clinch 8 has a maximum thickness Tcx that is measured along a line normal to an inner surface, in the axial direction, of the clinch 8. A ratio of a thickness Tf1 of the filler 10 to a sum of the thickness Tf1 and the thickness Tcx is greater than or equal to 0.1 and not greater than 0.6. A percentage of a complex elastic modulus E*f of the filler 10 relative to a complex elastic modulus E*a of the apex 46 is greater than or equal to 70% and not greater than 125%.

A process and a drum for looping annular anchoring structures in a process for building tyres for vehicle wheels includes: depositing a loop on a drum including a radially expandable/contractible intermediate annular portion and, in a position axially adjacent to the opposite axial ends of the intermediate annular portion, a pair of radially expandable/contractible lateral annular portions; associating an annular anchoring structure with a radially outer annular surface portion of the loop defined at the intermediate annular portion; and turning up each of opposite end edges of the loop on the annular anchoring structure through the lateral annular portions as a result of a thrusting stress imparted by a respective lateral annular portion of the pair of lateral annular portions because of a synchronous radial movement and a synchronous axial displacement of a respective plurality of circumferentially adjacent first angular sectors.

A bead member manufacturing method in the present invention includes a bead core forming step of winding and stacking a bead wire from a winding start end to a winding finish end and forming a bead core having an annular shape, the bead wire being formed by coating an outer circumferential surface of a metal wire with a topping rubber; and a bead wire banding step of winding a tape-shaped rubber around one or both of the winding start end and the winding finish end, wherein tackiness of the tape-shaped rubber is higher than tackiness of the topping rubber.

A tire includes: a bead core; a bead filler extending to an outer side in the tire-radial direction of the bead core; a carcass ply which is folded back around the bead core; a pad member disposed on an outer side in the tire-width direction of the bead filler; and a first rubber sheet disposed in a state covering a folding end of the carcass ply which is folded back, between the bead filler and the pad member, in which a second rubber sheet covering an electronic component is disposed between the bead filler and the pad member on an outer side in the tire-radial direction of the first rubber sheet.

A process and a drum for looping annular anchoring structures in a process for building tyres for vehicle wheels includes: depositing a loop on a drum including a radially expandable/contractible intermediate annular portion and, in a position axially adjacent to the opposite axial ends of the intermediate annular portion, a pair of radially expandable/contractible lateral annular portions; associating an annular anchoring structure with a radially outer annular surface portion of the loop defined at the intermediate annular portion; and turning up each of opposite end edges of the loop on the annular anchoring structure through the lateral annular portions as a result of a thrusting stress imparted by a respective lateral annular portion of the pair of lateral annular portions because of a synchronous radial movement and a synchronous axial displacement of a respective plurality of circumferentially adjacent first angular sectors.

The present invention discloses a pneumatic tire.

The pneumatic tire includes a bead portion and a rim flange provided outside the bead portion. The rim flange is made of a rubber resistant to ozone and fatigue and a hardness reinforcing rubber portion is interposed between the rim flange and the bead portion. The pneumatic tire of the present invention avoids a change in the physical properties of the flange rubber, ozone cracks caused by ozone present in the air, and fatigue cracks caused by frequent flexion and extension to achieve improved handling stability and straight ahead ability.

A tyre including two toroidal bead portions housing an annular bead bundle (121); a toroidal body ply, folded, about a respective bead bundle forming a respective turn-up; two bead fillers, each in contact with a respective bead bundle and at least partly enclosed by a respective turn-up, and two elastomeric crack control members, one for each bead portion. Each crack control member extends at a body ply ending, and each crack control member is made by a couple of strips having a differentiated stiffness along their transversal section, with a lower stiffness at a first strip adjacent to the body ply ending and a higher stiffness at a second strip in contact with the respective bundle, so that the first lower stiffness strip defines a preferential propagation path for any tyre crack originating at the body ply folded ending.

An adapter for a rolling assembly having an axis of rotation (YY), the rolling assembly comprising a tyre having two beads, and a rim having two rim bead seats, for each bead, provides the connection between the bead and the rim, the said adapter comprising an axially inner end connected to the rim, an axially outer end comprising an outer reinforcing element and intended to come into contact, via a substantially radial axially inner face, or bearing face, with a bead, a body connecting the axially outer end to the axially inner end so as to form a single piece, comprising at least one main reinforcement providing the connection between the outer reinforcing element and the inner reinforcing element, and comprising a substantially axial adapter seat intended to come into contact with a bead. The outer reinforcing element is completely axially on the outside of the bearing face, and the outer reinforcing element is a substantially annular structure, referred to as a bead wire, of polygonal section, comprising an individual metal wire of diameter D1, the said wire being coated in an elastomer composition and wound contiguously around a support at least three times in an axial direction and at least twice in a radial direction.

A device for manufacturing a multiple layer rubber strip including a first rubber strip and a second rubber strip, the device includes a first rubber extruder for extruding the first rubber strip, a second rubber extruder for extruding the second rubber strip, a first conveyor for conveying the first rubber strip extruded from the first extruder to a downstream side in a convey direction, and a second conveyor for conveying the second rubber strip extruded from the second extruder to a downstream side in the convey direction. The second conveyor is located upwardly of the first conveyor and has a downstream conveyor end which positions above a conveying surface of the first conveyor such that the second rubber strip delivered from the downstream conveyor end meets and overlaps the first rubber strip on the first conveyor at a joining location to form the single multiple layer rubber strip.