Class / Patent application number | Description | Number of patent applications / Date published |
152540000 | Structure of inextensible reinforcing member | 24 |
20090008018 | Annular concentric-lay bead cord and method of manufacturing the same - An object of the present invention is to impart long-lasting, stable corrosion resistance to an annular core of an annular concentric-lay bead cord at a low cost. | 01-08-2009 |
20090025849 | TIRE AND METHOD OF PRODUCING THE SAME - There is proposed a tire realizing the simplification of a bead portion structure without sacrificing a bead portion durability and a steering stability. | 01-29-2009 |
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 |
20090194215 | Pneumatic tire with composite bead core - A tire includes a carcass structure including at least one carcass ply, the carcass structure including a crown portion and two axially opposite side portions terminating in beads for mounting the tire on a rim; a tread band; and a belt structure interposed between the carcass structure and the tread band. The bead includes a bead core. The bead core includes: at least one first elongated element including at least one metal wire, and at least one second elongated element including at least one carbon fiber. The bead core results in an increased bead, forcing an improved bead unseating resistance and a decreased weight. | 08-06-2009 |
20090260735 | BEAD CORD AND VEHICLE TIRE - A bead cord is described including an annular core and a side wire. The side wire is helically wound around the annular core. Further, the annular core is made of a strand wire. The strand wire includes a plurality of twisted core wires. The plurality of core wires may have substantially the same diameter. | 10-22-2009 |
20090277558 | LIGHTWEIGHT AND EXCELLENT DUCTILE BEAD WIRE, METHOD FOR PRODUCING THE SAME AND LIGHTWEIGHT TIRE - A bead wire has a composition of Mn: 5-35 at % and Al: 5-20 at % and the reminder being Fe and inevitable impurities, in which a steel structure is an austenite single-phase structure, and achieves weight reduction and high ductility without reducing strength. | 11-12-2009 |
20090294011 | HEAVY-DUTY PNEUMATIC TIRE - A heavy-duty pneumatic tire comprises: a carcass ply turned up around a bead core in each bead portion from the inside to the outside of the tire so as to have a pair of turnup portions and a main portion therebetween; and a bead apex and an L-shaped reinforcing cord layer which are disposed in each of the bead portions. The bead apex includes: an L-shaped high-modulus inner bead apex; and a delta-shaped low-modulus outer bead apex. The L-shaped inner bead apex comprises: a base part along a radially outer surface of the bead core; and a radial part along the carcass ply main portion. The delta-shaped outer bead apex is disposed on the radially outside of the base part of the L-shaped inner bead apex and on the axially outside of the radial part of the L-shaped inner bead apex. The L-shaped reinforcing cord layer is made up of an radially inner part extending on the radially inner side of the bead core, and an radially outer part extending along the axially outer surface of the carcass ply turnup portion. | 12-03-2009 |
20100000652 | TIRE WITH LIGHT WEIGHT BEAD CORE - A tire includes a carcass structure of a substantially toroidal shape, having opposite lateral edges associated with respective right-hand and left-hand bead structures, the bead structures including at least one bead core and at least one bead fiber; a belt structure applied to a radially external position with respect to the carcass structure, a tread band radially superimposed on the belt structure; a pair of sidewalls applied laterally on opposite sides with respect to the carcass structure; wherein the at least one bead core includes at least one first elongated element including at least one composite material including a plurality of elongated fibers embedded in a polymeric material, the composite material having a flexural modulus, measured according to Standard ASTM D790-03, at 23° C., not lower than or equal to 10 GPa, preferably 20 GPa to 200 GPa and at least one second elongated element including at least one metal wire. | 01-07-2010 |
20100147435 | PNEUMATIC TIRE - An object of the present invention is to improve durability of a bead portion of a tire by optimizing a sectional shape and arrangement of a bead wire(s). The pneumatic tire comprises: a pair of bead portions having bead cores embedded therein, each bead core being constituted of plural bead wires extending in the tire circumferential direction; a pair of side wall portions extending from the bead portions on the outer side in the tire radial direction; a tread portion extending over the respective sidewall portions; and a carcass extending in a toroidal shape across the aforementioned portions and having respective end portions being turned up around the bead cores, wherein the bead wires each have complementary shape portions in a section in the tire widthwise direction, by which shape portions adjacent bead wires are complementarily engageable with each other. | 06-17-2010 |
20100163152 | PNEUMATIC TIRE - The present invention provides a pneumatic tire in which a sectional shape of a bead wire and arrangement of the bead wires have been optimized to increase rotational rigidity of the bead core as a whole and suppress pulling-off of a carcass, so that durability of the bead portion can be enhanced. The pneumatic tire comprises: a pair of bead portions | 07-01-2010 |
20100269969 | Pneumatic Tyre for vehicle wheels - In a tyre for vehicle wheels, each of the two annular anchoring structures includes at least two annular reinforcing inserts, each of them being made up of at least one first elongated element and at least two reinforcing elements that are mutually spaced apart and each of which extends in a radial direction and includes at least one second elongated element. An end portion of at least one carcass ply lies between two adjacent annular reinforcing inserts. The second elongated element of at least one of the reinforcing elements is of metal material and delimits an angle included between about 20° and about 70° relative to a radial direction passing through a radially internal point thereof. | 10-28-2010 |
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 |
20110056607 | HEAVY DUTY PNEUMATIC TIRE - A heavy duty pneumatic tire comprises a carcass ply of steel cords turned up around a bead core in each bead portion so as to form a pair of turned up portions and a main portion therebetween. The steel cords of the carcass ply are rubberized with a topping rubber having a hardness Ht | 03-10-2011 |
20110162775 | HEAVY-LOAD TIRE - A heavy-load tire has a wind bead structure in which a turned-up portion of a carcass ply is wound around a bead core, in which a bead portion is equipped with a bead reinforcing layer having a u-shaped cross section and a bead apex rubber having a triangular-shaped cross section. The turned-up portion has an auxiliary turned-up portion passing through the vicinity of a radially outer side of the bead core. The bead apex rubber includes a high elasticity inner apex portion disposed at a radially inner side and a low elasticity outer apex portion disposed at a radially outer side. The inner apex portion has an L-shaped cross section including a bottom piece portion along the radially outer side of the auxiliary turned-up portion, and a raised piece portion which rises at an axially inner end side of the bottom piece portion and extends radially outwardly in a tapering manner along the body portion of the carcass ply. | 07-07-2011 |
20110168315 | Bicycle Tire - A bicycle tire comprising a carcass reinforcement, each edge of which is anchored in two beads by a turn-up around a bead core, each bead being continued radially by sidewalls which lead into a tread. Each of the bead cores is formed by winding a saturated non-wrapped metal cable made of filaments, the diameter of said cable being less than 1.5 mm and the diameter of the filaments being less than 0.25 mm. | 07-14-2011 |
20110253282 | SIDEWALL SHEAR DECOUPLING LAYER - A pneumatic tire having pairs of shoulder section and bead section shear layers positioned on at least one axial side of the carcass layer. Examples include one or more of the shear layers constituted of an elastomer composition having a modulus of elongation at 10% (MA1O) of no greater than 110% of the lowest MA1O of all elastomer compositions constituting the sidewall components that are positioned outward of an axially-inward side of the carcass layer and/or constituted of a short-fiber reinforced elastomer composition having an MA1O of between 25 MPa and 100 MPa and/or the bead section shear layers constituted of an elastomer composition having an MA1O of no greater than 110% of the highest MA1O of all elastomer compositions constituting the sidewall bead section components. Exemplary shoulder section and bead section shear layers in a pinch shocked region are opposite across an interior of the tire. | 10-20-2011 |
20110253283 | SIDEWALL SHEAR DECOUPLING LAYER - A pneumatic tire having pairs of shoulder section and bead section shear layers positioned on at least one axial side of the carcass layer. Examples include one or more of the shear layers constituted of an elastomeric fabric having elastomeric fibers woven in the fabric. Such fibers may be spandex fibers and the fabric may further be characterized as being woven additionally with nylon fibers in a tricot construction. Other embodiments include at least one of the shear layers constituted of a polyurethane type elastomer material having an MA1O of between 1 MPa and 350 MPa. Exemplary shoulder section and bead section shear layers in a pinch shocked region are opposite across an interior of the tire. | 10-20-2011 |
20120067493 | HEAVY DUTY TIRE - A pneumatic tire construction is described suitable for severe loading conditions. The tire includes a bead portion further having an apex which extends radially outward of the bead core, and a first turn-up pad located adjacent said chafer, and a second turn-up pad located adjacent said first turn-up pad, wherein the first turn-up pad has a G′ less than the G′ of the second turn-up pad. Alternatively, the first turn-up pad may be located adjacent to the rim flange and the second turn-up pad may be located axially inward of the first pad. The second turn-up pad is preferably thicker and longer than the first turn-up pad. | 03-22-2012 |
20120067494 | HEAVY DUTY TIRE - A pneumatic tire construction is described suitable for severe loading conditions. The tire includes a bead portion further having an apex which extends radially outward of the bead core, and a turn-up pad located adjacent said chafer. The turn-up pad has a minimum specified width and a maximum specified width at a Radius R as measured from the bead center. The turn-up pad is formed of a material having a specified G′ and G″. | 03-22-2012 |
20120085475 | PNEUMATIC TIRE WITH A KNITTED FLIPPER - A pneumatic tire includes an axis of rotation, a carcass, a tread disposed radially outward of the carcass, a belt structure disposed radially between the carcass and the tread, and a reinforcing structure providing a buffer for absorbing shear strain. The reinforcing structure includes a layer of a knitted fabric. The layer includes first yarns and second yarns. | 04-12-2012 |
20130146201 | BEAD STRUCTURE FOR A PNEUMATIC TIRE - The present invention relates to a pneumatic tire having a bead structure provided therein. The bead structure is defined by a homogeneous arrangement of between 3-300 cords. Each cord comprises at least one strand wrapped by at least two strands. | 06-13-2013 |
20150027610 | PNEUMATIC TIRE FOR CYCLE WHEEL - A pneumatic tire for a cycle wheel comprising a casing and two beads positioned on respective ones of lateral sides of the casing, the pneumatic tire having the shape of an open torus and defining an inner volume, at least one of the two beads having a shoulder projecting outward of the portion of the casing adjacent thereto, and a support positioned along a radial plane at a second end of the bead, the shoulder being positioned along a radial plane at a first end of the bead and comprising, on its outer surface, a first support surface and an edge, the first support surface being positioned between the edge and the casing, and the support surface being set back with respect to the edge. In a radial plane, the normal direction of the first support surface is substantially tangent to the casing, the support comprising a second support surface positioned on the inner side. The longitudinal modulus of the bead, or the equivalent modulus of the various constituent elements of the bead, is less than 2000 Mpa, and the transverse modulus of the bead, or the equivalent modulus of the various constituent elements of the bead, is greater than 50 Mpa or greater than 100 MPa. | 01-29-2015 |
20150053326 | PNEUMATIC TYRE AND MANUFACTURING METHOD THEREFOR - The present invention has an object of providing a pneumatic tire that exhibits better uniformity by improving the wire wound body for constituting the bead core. The pneumatic tire | 02-26-2015 |
20150343853 | Heavy duty tire - A pneumatic tire construction is described suitable for severe loading conditions. The tire includes a bead portion further having an apex which extends radially outward of the bead core, and a first turn-up pad located adjacent said chafer, and a second turn-up pad located adjacent said first turn-up pad, wherein the first turn-up pad has a G′ less than the G′ of the second turn-up pad. Alternatively, the first turn-up pad may be located adjacent to the rim flange and the second turn-up pad may be located axially inward of the first pad. The second turn-up pad is preferably thicker and longer than the first turn-up pad. | 12-03-2015 |