Abstract: A green tire includes a plurality of sheets of green rubber having a substantially circular shape, wherein each sheet of green rubber includes an upper ring and a lower ring, and each sheet of green rubber further includes a plurality of spoke portions extending from the upper ring to the lower ring. The green tire further includes a plurality of reinforcements. Each reinforcement is disposed between adjacent sheets of green rubber. At least one reinforcement is sandwiched between the upper rings of adjacent sheets of green rubber, and at least one reinforcement is sandwiched between the spoke portions of adjacent sheets of green rubber.

Abstract: A manufacturing method includes feeding a master roll 8a from a master roll table 10 to a belt table 14, and cutting the master roll 8a between the master roll table 10 and the belt table 14. In the step of feeding the master roll 8a from the master roll table 10 to the belt table 14, the master roll 8a is fed by holding a front part of the master roll 8a by a first hand 30 and a rear part of the master roll 8a by a second hand 40, and the front part of the master roll 8a is continuously held by the first hand 30 from start to end of the feeding.

Abstract: A tire assembly includes an assemblage formed of first and second impregnated woven or knitted structures, a bearing structure, and at least one sacrificial holder. The first impregnated woven or knitted structure includes a first woven or knitted fabric and a first layer of a first polymeric composition. The second impregnated woven or knitted structure includes a second woven or knitted fabric and a second layer of a second polymeric composition. The bearing structure includes bearing elements connecting the first and second woven or knitted fabrics together. Each sacrificial holder is structured to hold temporarily the first and second impregnated structures in contact with each other, connecting the first and second woven or knitted fabrics together. When the first and second impregnated woven or knitted structures are separated from each other, each sacrificial holder breaks before any breakage of the bearing elements.

Abstract: A method for manufacturing a tyre is provided, in particular a run-flat tyre. The method includes providing a drum with a first shrink section and a second shrink section. Each shrink section is provided with a shrink surface that is radially movable. The method includes moving the shrink surfaces radially inwards with respect to the central axis from a level position to a shrink position in which the drum, at the shrink surfaces, has a circumference with a second diameter that is smaller than the first diameter, while creating a partial vacuum between the shrink surfaces and a first tyre layer at the first shrink section and the second shrink section. The method further includes shrinking the first tyre layer onto the shrink surfaces in the shrink position under the influence of the partial vacuum. A drum for use in the aforementioned method is also disclosed.

Abstract: Disclosed is a pneumatic tire with a bead having enhanced endurance, more particularly, a pneumatic tire with a bead having enhanced stiffness in which at least one bead core is provided and a carcass does not have a turn-up structure at an end thereof such that stiffness of the bead and sidewall is enhanced. The pneumatic tire includes bead cores in which multi-layered bead wire cords are coiled, bead fillers adhering to the bead cores having at least two rows, and a carcass ply disposed between the bead cores of the bead fillers, the carcass ply having a linear shape without a turn-up structure, wherein a left bead filler and a right bead filler including the bead cores including the bead wire cords are disposed at both sides of the carcass ply, and each of the left and right bead fillers has a diameter decreasing upward from a bead base.

Abstract: Various embodiments relate to a pivoted dual roller tire sidewall and body ply stitching apparatus for stitching tire components, the apparatus including a first roller having a toroidal shape and connected to a first supporting arm, a second roller having a toroidal shape and connected to a second supporting arm and a supporting member connected to the first roller, the second roller and a third supporting arm wherein the second supporting arm is longer than the first supporting arm and the first roller and the second roller are configured to pivot on the supporting member.

Abstract: A system manufactures a tire assembly. The system includes a core having a cylindrical hub and radially protruding extensions projecting radially outward from the hub, a plurality of internal arcuate members for positioning a reinforcing layer of the tire assembly about the core, the internal arcuate members being disposed in spaces between the extensions of the core, a first side plate for securing the internal arcuate members in place relative to the core, and a second side plate for securing the core and internal arcuate members to each other.

Abstract: A method of constructing a tower is provided, the method including the steps of providing an elevation mechanism including a dynamic engaging mechanism realized to engage with a tower surface, arranging a 3D printing device on the elevation means, actuating the dynamic engaging mechanism to effect a vertical elevation of the elevation mechanism, actuating the 3D printing device to deposit an essentially horizontal material layer including at least a tower body region, and repeating the steps to obtain a tower structure. A tower constructed using such a method, and a 3D tower printing apparatus, is also provided.

Abstract: A method for manufacturing a motorcycle tire comprises: building a raw tire main body, building a breaker, sticking the breaker, and building a band. The building of the breaker comprises: moving two cylindrical support rings to operating positions, swelling the raw tire main body to have its crown portion protruding from the support rings through a gap therebetween, and winding a breaker ply material on the support rings to form a cylindrical breaker ply whose inner surface is adhered to the raw tire main body. The sticking of the breaker comprises: expanding a profiled deck to swell the raw tire main body into a second swollen state, and turning down both edge portions of the breaker while being supported by the profiled deck. The building of the band comprises: spirally winding a tape on the curved breaker ply while being supported by the profiled deck.

Abstract: A process for building different models of green tyres for vehicle wheels, by using elementary semi-finished products, in a building plant including a plurality of workstations is described. The process includes building a first carcass structure of a first model of tyre on a first forming support, in a first workstation, the first carcass structure including at least one first carcass ply obtained from a first elementary semi-finished product, and at least one first pair of annular reinforcing inserts. The process includes the delivery of the first forming support to a bypass device to go beyond at least one second workstation without transiting through it. A plant suitable for allowing the aforementioned process to be carried out is also described.

Abstract: A system manufactures a tire assembly. The system includes a core having a cylindrical hub and radially protruding extensions projecting radially outward from the hub, a plurality of internal arcuate members for positioning a reinforcing layer of the about the core, the internal arcuate members each being wrapped with a reinforcement layer, the internal arcuate members being disposed in spaces circumferentially between the extensions of the core, a first side plate for securing the internal arcuate members in place relative to the core; and a second side plate for securing the core and internal arcuate members to each other.

Abstract: A curing press for tires includes an upper cavity having a vertically separable upper housing and a top mold. A lower cavity is mounted on a base and forms an arrangement to provide mold height adjustment during curing. The base includes a bottom bolster structure and a bottom mold. An indexing lock ring is rotatably arranged with the bottom bolster structure for closing or opening of the top and bottom molds. The bolster structure includes squeeze cylinders having piston rods to provide mold height adjustment. A squeeze retract stop assembly is provided to restrict vertically downward movement of the bottom mold during a tire curing process. The press includes at least one locking lever and at least one indexing lock pin adapted to connect the at least one locking lever to lock holes in the bottom bolster structure wherein each lock hole corresponds to a particular mold height.

Abstract: A system for mounting a housing and an insert to a tire includes a housing configured to be installed in a tire, wherein the housing has a top opening. The system also includes at least one anchor connected to a side of the housing in an un-deployed configuration. The system further includes an insert configured to be inserted into the top opening of the housing. The at least one anchor projects outward into the tire when the insert is inserted into the top opening of the housing.

Abstract: A process for 3D printing a material by successively solidifying layers of the material to form a cross section of an object. The process includes providing a layer of the material, preheating the material to a preheating temperature, below the temperature at which the material is solidified, and solidifying a layer of the material by electromagnetic radiation or particle radiation. In the solidification step, during a predetermined period of time starting with the beginning of the solidification step, the heat introduced per unit area is reduced over time and can be described by a function which decreases monotonously depending on the time.

Abstract: Provided is a tire vulcanization mold which includes a sector mold configured to mold a tread portion; and a pair of upper and lower side plates positioned on an inner diameter side of the sector mold and configured to mold side wall portions, the sector mold and the pair of upper and lower side plates being configured to engage with each other by fitting engagement by way of fitting portions which opposedly face each other in a radial direction. At least either one of the sector mold and the side plate has: a recessed portion extending from each fitting surface in a tire radial direction and indented outward in a tire width direction; and a saw cut groove having a groove shape extending in a tire radial direction along at least one of an edge portion and a corner portion of the recessed portion and communicating with the fitting surface.

Abstract: A drum for producing a tire casing blank comprises a support and sectors forming a circumferential face of the drum. Each sector has a circumferential outer face having a contour of general trapezoidal form and is mounted so as to be movable relative to the support in a non-radial predetermined direction relative to an axis of rotation of the drum and intercepting this axis.

Abstract: A process and an apparatus for building tyres, wherein, in the process, a carcass sleeve including at least one carcass ply and a pair of annular anchoring structures is transferred to a shaping drum including flange elements that are each engageable with one of said annular anchoring structures. The carcass sleeve is shaped according to a toroidal configuration. Before shaping, annular grip elements respectively carried by the flange elements are radially expanded, each inside one of the annular anchoring structures, in order to engage the carcass sleeve. The annular anchoring structures are moved axially apart from each other before engaging the carcass sleeve by the annular grip elements.

Abstract: The invention includes methods for forming a retreaded tire and treads there for. Particular embodiments of such methods include providing a tire carcass configured to receive a tire tread along an annular tread-receiving area and a pre-formed tread comprising a tread body and a submerged void arranged along a bottom side of the tread and extending into the tread thickness to a top end located below the top side of the tread, the submerged void having a length and an opening arranged along the bottom side when the tread is in an uninstalled configuration, where the opening of the submerged void extends in a direction of the submerged groove length along an alternating, non-linear path. Further steps include assembling a retreaded tire by arranging the tire tread atop a bonding layer arranged between the tire tread and the tire carcass and comprising uncured bonding material.

Abstract: A method of forming a non-pneumatic tire is provided that includes the steps of providing an outer shear band ring (56) and an intermediate section (14) that has a supporting structure (16). The intermediate section (14) is collapsed from an uncollapsed state to a collapsed state. The intermediate section in the collapsed state is inserted inside of the outer shear band ring such that the outer shear band ring is located outward from the intermediate section in a radial direction of the tire. Compression of the intermediate section (14) is released when the intermediate section (14) is inside of the outer shear band ring (56) so that the intermediate section returns to the uncollapsed state from the collapsed state. In one embodiment, the compressing step of the intermediate section (14) is performed by a compression device (68) that has a plurality of gripping members.

Abstract: A plurality of embodiments of a method and apparatus for retreading individual tires using one or more electrical heating bands and a component or device to apply a force to the retread tire package comprising a new or used core and a new retread along with an adhesive. In particular, the force may be applied using one or more plates that are connected to actuators for pushing the plates into the retread package to apply the force during curing of the package.