A tire includes a first side and a second side, and a tread portion extending between the first side and the second side. The first side includes external geometry having at least one rib surrounding a recess, without extending into the recess. The recess is configured to receive a tire electronic device.

The provided is a mold for forming a tire and a tire production method that can reduce the driving force required to drive the segment in the initial stage of releasing a tire from the mold. The mold for forming a tire comprises: a circular tread molding portion divided into a plurality of circumferentially aligned segments; and a tilting mechanism that tilts the segments radially outward when the tread molding portion is opened radially outward, and the tilting mechanism reverts the tilt of the segments after the tread molding portion is opened.

A tire tread forming system is provided. The system includes a tire tread mold configured to receive uncured rubber, and a tab system coupled to the tire tread mold. The tab system includes a tab mold contiguous with the tire tread mold and including a tab recess therein, an actuator, and a tab ejector operably coupled to the actuator, the actuator being configured to cause the tab ejector to move so as to eject a pull-out tab from the tab recess of the tab mold.

A tire made of rubber material, comprising a tread (2), said tread (2) having a plurality of grooves (21), each groove (21, 23) having a groove bottom, walls flanking the groove bottom and transition regions between the walls and the groove bottom. The tire is characterized in that all or some of the grooves (21, 23) comprise a texture (3) extending only over the groove bottom and over at least a part of the transition regions associated with this groove bottom, said texture (3) contrasting with the rest of the tire (2).

A tire mold having moveable elements displaceable to bring the tire mold into an open or into a closed position. The mold comprises upper and lower side members; a plurality of mold segments defining a mold cavity; a vacuum device for removing gas from the mold cavity; and sealing means with closing seal members configured to cooperate with associated cooperating surfaces for sealing the mold cavity by contact with each other. The one or more closing seal members and the associated cooperating surfaces are moveable relative to each other upon displacement of the one or more moveable elements. Said one or more closing seal members are placed in a position in which they are facing their associated cooperating surfaces without contacting them both in a partial closure position of the tire mold and in the closed position of the tire mold when the vacuum device is not activated.

A vent hole of a mold for molding a tire is formed by suppressing bending deformation of a wire in a casting mold. By using a relational expression among a length of a wire in a casting space, a diameter of the wire, a contact angle of the wire with respect to a molten metal, and a bent amount of the wire by casting acquired by experiments, the contact angle of the wire at which the bent amount of the wire is within an allowable range is calculated from conditions of an actual length and the diameter of the wire. On the basis of the calculated contact angle of the wire, the wire is disposed in the casting space. By pouring the molten metal into the casting space, a cast metal with the wire cast-in in the casting space is cast. A vent hole is formed by withdrawing the wire.

A chamber for vulcanizing a tire comprises filamentary load-bearing elements arranged within the internal cavity, the chamber being delimited by an operating upper plate and a lower plate, the two beads of the tire being fastened to the circumference of the plates, the interior of the chamber having a vertical axis XX and horizontal axis YY passing through the center, and comprising at least one heating means, a circulation blower for circulating a heat-transfer fluid, and a directing means for directing the flow of heat-transfer fluid.

A mold for molding a tire tread comprises a plurality of mold segments. Each of the plurality of mold segments includes an integer number of tread pitch repetitions. The plurality of mold segments are structured to be coupled to each other end-to-end so as to form the mold such that the mold includes an integer number of tread pitches. The mold also includes at least one mold end segment positioned on at least one end of the mold and has a mold end segment length shorter than a length of each of the plurality of mold segments.

A process for molding a tire within a tire mold having movable elements displaceable to bring the tire mold into an open position or a closed position. The tire mold comprises upper and lower side members; mold segments defining a mold cavity; and one or more seal members for sealing the mold cavity. The process comprises steps of providing a tire mold having one or more closing seal members; placing the green tire into the mold cavity; placing one or more closing seal members next to a cooperating surface so as to face it without contacting it, by bringing the tire mold into a partial closure position; and drawing a vacuum on the mold cavity causing the one or more closing seal members to be moved or deformed by suction until they are in contact with the cooperating surface so that the mold cavity is sealed in an airtight manner.

In a method of manufacturing a pneumatic tire, vulcanization is performed using a mold having a side plate for forming a sidewall portion of the pneumatic tire and a sector for forming a tread portion of the pneumatic tire, and in which chamfered portions are formed respectively at edge portions of the side plate and the sector abutted against each other, to form a ridge extending along the chamfered portions in a tire circumferential direction at a dividing position between the side plate and the sector in the pneumatic tire vulcanized in the mold, and the ridge is cut by a cutter along the tire circumferential direction.