| Patent application number | Description | Published |
|---|
| 20080257476 | Method and Apparatus for Manufacturing Pneumatic Tyres - One or more components of elastomer material in a tyre are formed by dispensing elastomer material through a nozzle of an extruder to form a continuous elongated element of flattened section that is laid in the form of coils disposed close to each other on a laying surface carried by a support element, while said support element is driven in rotation and suitably moved adjacent to a die of the nozzle. The nozzle is drivable in rotation by an actuator so as to modify orientation of the nozzle itself during formation of the tyre component. | 10-23-2008 |
| 20080264543 | Heavy Load Vehicle Tire - A tire includes at least two inserts made of a crosslinked elastromeric material applied in a radially external position with respect to the belt structure in proximity of the axially external edges of the belt structure, each insert including an axially inner portion which is interposed between the belt structure and the tread band, and is tapered toward the equatorial plane of the tire; and an axially outer portion which is interposed between the carcass structure and the corresponding sidewall and is tapered toward the rotational axis of the tire, wherein the crosslinked elastomeric material has a dynamic elastic modulus, measured at 70° C., lower than 7 MPa. | 10-30-2008 |
| 20090101264 | Pneumatic tyre for vehicle, method and apparatus for its manufacture - In a tyre for vehicle wheels, the tread band sidewalls and/or other structural elements of elastomer material have a layered structure which includes at least one first component and at least one second component of a material with different composition from that of the first component. The first and second components have an undulated interface profile, defining elements of mutual mechanical engagement. Also described is a process and an apparatus for manufacturing a tyre. | 04-23-2009 |
| 20090294024 | Method of Manufacturing a Tyre Bead and Apparatus Therefor - A method for manufacturing a tyre for vehicle wheels, includes a carcass structure having at least one carcass ply associated with axially opposite annular anchoring structures. The method includes the steps of manufacturing at least one pair of annular anchoring structures of the carcass structure and associating the pair of annular anchoring structures with the at least one carcass ply at axially opposite end flaps of the carcass ply. The step of manufacturing each annular anchoring structure includes the steps of manufacturing a bead core and coating the bead core with a reinforcement tape through an apparatus. The step of coating the bead core includes the steps of winding the reinforcement tape onto the bead core moving a tape deposition member with respect to the bead core. The step of manufacturing the annular anchoring structure further includes a step of loading the reinforcement tape onto the tape deposition member. This last step is carried out simultaneously with at least part of the step of winding the reinforcement tape onto the bead core. | 12-03-2009 |
| 20100024959 | PROCESS AND APPARATUS FOR MANUFACTURING TYRES - A carcass ply is applied around an outer surface of a building drum, according to an application diameter greater than the fitting diameter of the tyre. An annular anchoring structure defining the fitting diameter is coaxially engaged around each of the end flaps. A n outer sleeve including at least one belt structure possibly associated with a tread band is disposed at a coaxiaily centred position around the carcass sleeve applied onto the building drum. Through axial approaching of two halves forming the building drum, the carcass sleeve is shaped into a toroidal configuration to determine application of same against a radially internal surface of the outer sleeve. | 02-04-2010 |
| 20100096070 | PROCESS AND APPARATUS FOR BUILDING TYRES - Two auxiliary support members are operatively engaged with a building drum, in axially approached relationship with respective halves of the drum itself, each auxiliary member having a circumferential rest surface extending in the continuation of an outer circumferential surface of the building drum itself. Applied around the outer circumferential surface of the building drum is at least one carcass ply having axially opposite end flaps each lying on the circumferential rest surface of the respective auxiliary support member. A pair of auxiliary shaping members engaged with the building drum in place of the auxiliary support members, each act against a circumferential abutment edge carried by the building drum, to enable the carcass ply to be shaped into a toroidal configuration concurrently with mutual approaching of the halves of the building drum. | 04-22-2010 |
| 20100101704 | PROCESS AND APPARATRUS FOR MANUFACTURING TYRES FOR VEHICLE WHEELS - A process and an apparatus for manufacturing tyres for vehicle wheels, includes the step of building on a substantially cylindrical forming support a carcass structure including at least one carcass ply associated, at axially opposite end edges thereof, with respective annular anchoring structures. The step of building the carcass structure further includes the step of associating, at at least one end edge of said at least one carcass ply, at least one reinforcing structure including a predetermined number of reinforcing elements having a predetermined width and same length. The reinforcing elements are preferably obtained by cutting to size, with a predetermined cutting angle, a continuous band-like reinforcing element having a predetermined width. The reinforcing elements are arranged on the end edge of the carcass ply along a deposition path at a distance from one another having a value between 0 and a predetermined value. | 04-29-2010 |
| 20100116414 | PROCESS AND APPARATUS FOR MANUFACTURING TYRES - A plurality of strip-like elements is applied onto a forming drum externally having a substantially cylindrical laying surface. The strip-like elements are disposed in mutually approached relationship to form at least one first annular reinforcing layer on the forming drum itself set to a first work diameter at which each of the applied strip-like elements on the laying surface subtends an arc of a circumference of a width as large as a submultiple integer of the overall circumferential extension of the laying surface itself. Adjustment devices operating on the forming drum subsequently carry out expansion of the latter to a second work diameter larger than the first work diameter, while maintaining its laying surface substantially cylindrical. | 05-13-2010 |
| 20100200151 | PROCESS AND APPARATUS FOR BUILDING PNEUMATIC TYRES - An apparatus for building pneumatic tyres includes a forming support and an assembling device to assemble components of elastomeric material on the forming support. The assembling device includes a feeding unit to deliver a continuous elongated element of elastomeric material, a conveyor having a moving surface along a predetermined direction and toward a proximal end thereof close to the forming support, and an application device positioned at the proximal end. The continuous elongated element is moved forward on the moving surface as far as the proximal end and the forming support is rotated to enable application of the continuous elongated element in the form of coils wound up on the forming support itself. A retaining device co-operates with the conveyor to brake the continuous elongated element at the end of the application, while the forming support goes on rotating, until it causes stretching and severing of the continuous elongated element. | 08-12-2010 |
| 20100269976 | PROCESS AND PLANT FOR BUILDING TYRES FOR VEHICLE WHEELS - A process for building tyres for vehicle wheels wherein each tyre includes a carcass structure and a crown structure, the crown structure including a belt structure including a first radially inner belt layer and at least one second belt layer radially external to the first belt layer, the process including the steps of: a) placing an annular assembly including a first radially inner belt layer and at least one second radially outer belt layer on at least one auxiliary turning up drum; b) defining at least one pair of folding lines in axially opposite positions of the annular assembly by respective abutment devices radially external to the auxiliary turning up drum; c) adjusting the axial position of the folding lines relative to a centre line plane of the auxiliary turning up drum; and d) turning up, at the folding lines, at least a part of end portions of the first belt layer axially protruding relative to the at least one second belt layer on the at least one second belt layer of the annular assembly. | 10-28-2010 |
| 20100276067 | PROCESS AND PLANT FOR BUILDING TYRES FOR VEHICLE WHEELS - A process for building tyres for vehicle wheels includes the steps of: i) building a carcass structure of a green tyre in at least one carcass structure building line, the carcass structure including at least one carcass ply and a pair of annular anchoring structures; ii) building a crown structure of a green tyre in at least one crown structure building line, the crown structure including a belt structure and a tread band; wherein step ii) of building the crown structure includes at least one step iii) of building the belt structure which in turn includes the steps of: a) building on at least one first building drum, an annular assembly including a first radially inner belt layer and at least a second belt layer radially external to the first belt layer; b) transferring the annular assembly on at least one auxiliary drum; c) turning up axially opposite end portions of the fast radially inner belt layer so as to obtain at least a partial overlapping of the end portions of the first belt layer on the at least one second radially outer belt layer; and d) transferring said annular assembly from the at least one auxiliary drum on at least one second building drum. | 11-04-2010 |
| 20100276068 | PROCESS FOR MANUFACTURING TYRES FOR VEHICLE WHEELS AND APPARATUS FOR BUILDING A CARCASS STRUCTURE OF A TYRE FOR VEHICLE WHEELS - A process for manufacturing tyres for vehicle wheels includes building on a forming support a carcass structure including at least one carcass ply, and, at at least one end edge of the carcass ply, at least one annular anchoring structure including at least one substantially circumferential annular insert and at least one filling insert associated with the at least one substantially circumferential annular insert. Building the carcass structure includes positioning the annular anchoring structure on the carcass ply by moving the substantially circumferential annular insert into contact with an end edge of the carcass ply by means of a special positioning member, pulling down the filling insert on the end edge of the carcass ply and turning up a free end portion of the end edge of the carcass ply so as to form a turned up end portion of the carcass ply including the annular anchoring structure. The pulling down of the filling insert on the end edge of the carcass ply is carried out by a special pulling down member while the substantially circumferential annular insert is retained in a contact position with the end edge of the carcass ply by the positioning member. | 11-04-2010 |
| 20110072664 | PROCESS AND APPARATUS FOR BUILDING TYRES - A carcass ply is applied around an outer surface of a building drum according to an application diameter larger than the fitting diameter of a tyre. Coaxially engaged around each of the end flaps is an annular anchoring structure defining the fitting diameter. A pair of sidewalls is manufactured by laying of a continuous elongated element in the form of approached coils on the carcass sleeve. An outer sleeve, including at least one belt structure possibly associated with a tread band, is coaxially centered around the carcass sleeve. Through axial approaching of two halves forming the building drum, the carcass sleeve is shaped into a toroidal configuration to determine application of same against a radially internal surface of the outer sleeve. | 03-31-2011 |
| 20110126962 | PROCESS AND APPARATUS FOR ASSEMBLING TYRES - In an assembly station a carcass sleeve and an outer sleeve manufactured along respective building lines are mutually coupled. Integrated into the assembly station are engagement devices that can be alternatively coupled to an auxiliary drum carrying an outer sleeve and to a building drum carrying a carcass sleeve. A grip unit picks up the outer sleeve from the auxiliary drum associated with the engagement devices in order to position it to a location radially external to the carcass sleeve carried by the building drum associated with the engagement devices in place of the auxiliary drum. Shaping devices that can be operatively coupled to the building drum cause radial expansion of the carcass sleeve so as to enable the latter to be coupled to the outer sleeve retained by the grip unit. | 06-02-2011 |
| 20110132515 | METHOD OF CONTROLLING A PHASE OF MOULDING AN ANNULAR FIXING STRUCTURE AND A TYRE INCLUDING AN ANNULAR FIXING STRUCTURE - A method for controlling a phase of moulding an annular fixing structure of a green tyre includes: introducing the green tyre into a curing mould including an inflatable bladder; delimiting at least one portion of the annular fixing structure by using a first and a second surface opposed to each other; bringing the first surface and the second surface so as to bring a portion of the first surface and a portion of the second surface into contact with a corresponding radially inner and axially inner surface portion and a corresponding radially inner and axially outer surface portion, respectively, the annular fixing structure generating a first squeezing pressure; inflating the inflatable bladder of the curing mould so as to bring the first and the second surfaces closer together, thus generating a second squeezing pressure in such a way as to shape the radially inner and axially inner surface portions and the radially inner and axially outer surface portions of the annular fixing structure. | 06-09-2011 |
