Patent application number | Description | Published |
20090114332 | Pneumatic Tyre with Improved Bead Structure - A truck pneumatic tyre, the bead core of which includes: a) a plurality of coils of at least one metallic wire, the coils being radially superimposed and axially arranged side-by-side with respect to each other, and b) a retaining member enveloping the plurality of coils, the retaining member including a plurality of mutually substantially parallel elongated reinforcing elements that include at least one preformed threadlike metallic element. | 05-07-2009 |
20100108228 | TIRE HAVING AN IMPROVED BEAD STRUCTURE - A heavy load vehicle tire includes a bead structure having two reinforcing layers adjacent to the inner side of the carcass turned up ply and a chafer layer including reinforcing elements. The reinforcing layers are preferably made of steel cords including preformed filaments, the cords being inclined at angles between +10° to +35° and −10° to −35° with respect to the radial plane of the tire. | 05-06-2010 |
20100276054 | Process for manufacturing a tyre and tyre bead structure - Process for manufacturing a tyre, includes the following steps: (a) winding at least one metal wire so as to form a plurality of coils, the coils being radially superimposed and axially arranged side-by-side with respect to one another, so as to obtain a bead core; (b) applying at least one layer of a crosslinkable elastomeric material to the bead core obtained in step (a), so as to obtain a coated bead core; (c) partially crosslinking the at least one layer of crosslinkable elastomeric material, so as to obtain an amount of free sulfur of 30% by weight to 70% by weight, preferably of 40% by weight to 65% by weight, more preferably of 50% by weight to 60% by weight, with respect to the total weight of the sulfur present in the crosslinkable elastomeric material; and (d) applying a bead filler to the radial outer surface of the bead core obtained in step (c), so as to obtain a bead structure for a green tyre. | 11-04-2010 |
20110099967 | METALLIC CORD COMPRISING PREFORMED AND NON-PREFORMED WIRES, RUBBER SHEET COMPRISING SAID CORD AND TYRE COMPRISING AT LEAST ONE LAYER DERIVED FROM SAID RUBBER SHEET - A two-layer cord having a number of wires in the outer layer, enclosing, but not completely, a cord core formed by a plurality of core wires, and in which the core wires are not preformed, while at least some of the outer wires are preformed. | 05-05-2011 |
20120267025 | TYRE FOR A WHEEL OF A HEAVY LOAD VEHICLE - A tyre including a carcass structure includes at least one carcass ply; a belt structure applied in a radially outer position relative to the carcass structure and a tread band applied in a radially outer position relative to the carcass structure. The belt structure preferably includes at least one reinforcing strip incorporating a plurality of reinforcing elements laid substantially in the circumferential direction. The reinforcing elements preferably include at least one high-elongation metal cord. The metal cord includes a plurality of twisted strands and each strand preferably includes a central filament and a plurality of outer filaments arranged to form a single circular outer ring around the central filament, wherein the central filament has a diameter greater than the diameter of the outer filaments. | 10-25-2012 |
20130118668 | TYRE FOR WHEELS OF HEAVY TRANSPORT VEHICLES - A tyre includes a carcass structure including at least one carcass ply, a belt structure applied in a radially outer position with respect to the carcass structure and a tread band applied in a radially outer position with respect to the belt structure. The belt structure includes at least one reinforcing strip incorporating a plurality of reinforcing elements arranged substantially in the circumferential direction. The reinforcing elements include at least one high-elongation metal cord. The metal cord includes a plurality of intertwined strands and each strand includes a plurality of filaments. Advantageously all the filaments of each strand have a diameter not greater than 0.175 mm. | 05-16-2013 |
20140000791 | PROCESS FOR MANUFACTURING A TYPE AND TYRE BEAD STRUCTURE | 01-02-2014 |
20140083590 | PNEUMATIC TYRE FOR HEAVY LOAD VEHICLE WHEELS - A pneumatic tyre for heavy load vehicle wheels, includes: a carcass structure, a belt structure applied in a radially outer position with respect to the carcass structure, and a tread band. The belt structure includes at least one reinforcing layer incorporating a plurality of reinforcing cords arranged substantially along the circumferential direction. The belt structure further comprises a first main belt layer and a second main belt layer wherein the first main belt layer includes a first plurality of metal cords inclined at a first angle and the second main belt layer includes a second plurality of metal cords inclined at a second angle. The metal cords of the first and second plurality of metal cords have a diameter not greater than 1.30 mm, and include a plurality of filaments having a diameter not greater than 0.30 mm. | 03-27-2014 |