Patent classifications
B60C2009/2276
Pneumatic Tire for a Vehicle
Pneumatic vehicle tire of radial type of construction, in particular a commercial vehicle tire, having a belt assembly (3) made up of at least three plies (8, 9, 10), namely two working plies (8, 9) and a protective ply (10) arranged radially on the outside with respect to the working plies (8, 9), wherein the protective ply (10) has reinforcing members (11) made up of one or more twisted-together steel filaments (12), wherein the steel of the steel filaments (12) of the reinforcing members (11) of the protective ply (10) can be assigned to the strength class ST or to a higher strength class, wherein the strength class ST has a tensile strength in MPa of 3980-2000 d and the strength class UT has a tensile strength in MPa of 4400-2000 d, wherein d is the diameter of a steel filament in mm.
Motorcycles tyre
Motorcycles tyre including a carcass structure, a zero-degree belt structure arranged in a radially outer position with respect to the carcass structure and a tread band arranged in a radially outer position with respect to the belt structure. The belt structure includes at least one hybrid reinforcing cord that has an elongation greater than 4% when subjected to a load equal to about 50 N and a tangent modulus with a monotonic progression as the elongation increases for elongations comprised between 4% and at least 9%.
MOTORCYCLE TYRE
A motorcycle tyre includes a tread portion, a pair of bead portions, a toroidal carcass extending between the pair of bead portions, and a band layer disposed outward in a tyre radial direction of the carcass and inside the tread portion. The band layer includes a band ply having one or more steel cords spirally wound in a tyre circumferential direction. The tyre has a parameter (A) in which a load index LI (kg) of the tyre is divided by a bending/compression stiffness ratio that is obtained by dividing a bending stiffness (g.Math.cm) of the steel cords by a compression stiffness (N/mm) of the steel cords being in a range of 1500 to 6000.
HOOPING REINFORCEMENT FOR A TIRE OF A HEAVY DUTY CIVIL ENGINEERING VEHICLE
A hooping reinforcement of a tire for a heavy duty civil engineering type vehicle is disclosed. The crown reinforcement (3) of the tire (1), radially on the inside of a tread (2), comprises a protective reinforcement (6), a working reinforcement (5) and a hooping reinforcement (7). Said hooping reinforcement (7) has an axial width at most equal to the smallest axial width (L61, L62) of the two working layers (61, 62), and comprises at least two hooping layers (71, 72) that are formed from strips each made up of elastic metal reinforcers. Each hooping layer (71, 72) is made up of an axial juxtaposition of contiguous turns of the strip (8), which are circumferentially wound around the working layer (51). Each strip (8) is at least 35 mm and at most 250 mm thick, and its distributed breaking tension is at least equal to 100 daN/mm.
Tire for two-wheeled automotive vehicle
In a tire 2 for a two-wheeled automotive vehicle, a carcass ply 24 is extended on and between one bead 8 and the other bead 8 along inner sides of a tread 4 and sidewalls 6, and includes a main portion 24a and turn-up portions 24b, which are formed by the carcass ply 24 being turned up around the beads 8 from an inner side toward an outer side in an axial direction. An outer end Pp of each turn-up portion 24b is positioned outward of a tread end Pe in a radial direction. A band 14 is positioned between a belt 12 and the tread 4, such that the band 14 covers the belt 12. An outer end P1 of an inner layer 28 layered over a carcass 10 and the outer end Pp of the turn-up portion 24b are positioned facing each other.
POLYESTER TIRE CORD AND RADIAL TIRE USING SAME
The present invention relates to a radial tire having a cap ply manufactured with a polyethylene terephthalate dip cord. The radial tire comprises: a pair of parallel bead cores; at least one radial carcass ply wound around the bead cores; one or more inclined belt layers layered on the outer circumference of the carcass ply; and one or more cap ply layers layered in the circumferential direction of a tire on the outer circumference of the inclined belt layers, wherein the cap ply comprises a dip cord manufactured using a yarn comprising 90 mol % or more of polyethylene terephthalate, and the dip cord has a shrinkage of 3.0-4.0%, a strength of 2.5-3.0 g/d at an elongation of 5%, a breaking strength of 6.5-7.5 g/d, and a dimensional stability index of 5.8-6.5.
TIRE
A plurality of belt layers are laminated in a radial direction. The belt layer includes a plurality of steel cords arranged in parallel and aligned in a row, and rubber. The steel cords have a 14 structure in which 4 filaments are stranded. [Tensile rigidity][number of ends] is 10,000 N/% or greater and 20,000 N/% or less, and an interface rigidity is 2.5 MPa or higher and 5.0 MPa or lower.
TIRE COMPRISING AN IMPROVED HOOPING PLY
A tire (10) comprises a crown (12) comprising a tread (20), a crown reinforcement (14), a carcass reinforcement (32), two side walls (22), two beads (24), each side wall (22) linking each bead (24) to the crown (12), the crown reinforcement (14) extending in the crown (12) in a circumferential direction (Z) of the tire (10). The textile wire-like hoop reinforcer element (48), the wire-like working reinforcer elements (46) and the wire-like carcass reinforcer elements (44) are arranged so as to define, in projection on the equatorial circumferential plane (E), a triangular mesh. The textile wire-like hoop reinforcer element comprises a core composed of a first strand comprising at least one monofilament, and a layer comprising at least two second strands, each second strand comprising at least one monofilament, each second strand of the layer being helically wound around the core.
Tire for two-wheeled vehicle comprising a hybrid hooping reinforcement
A tire (10) for two-wheeled vehicles comprises a crown (12) comprising: a tread (20), and a hoop reinforcement (17) comprising at least one hooping ply (19) comprising one or more hoop reinforcing elements (44) comprising an assembly made up of a multifilament strand of aromatic polyamide or aromatic copolyamide (47) and of a multifilament strand of aliphatic polyamide (48). The twist factor K of the hoop reinforcing element (44) ranges from 5.5 to 6.5. The tire (10) is obtained by a method comprising a step of manufacturing the hooping ply (19), in which the bonded reinforcing elements (44) are embedded in a polymer composition in order to form the uncured hooping ply, the equivalent initial tensile modulus of the uncured hooping ply ranging from 330 to 620 cN/tex/dm.
HIGH PERFORMANCE AGRICULTURAL TIRE
An agricultural tire includes a toroidal tire structure containing vulcanized rubber in an amount of about 90 percent or more by weight. The tire structure may have one or more performance enhancing features, including high strength plies. The high strength plies contain cords that are formed of yarns, including polyamide yarns, and have individual cord tensile strengths within a range of about 400 N to about 700 N. The performance enhancing features further include circumferential belt plies having cords at angles of about 74 degrees or more from an axial direction.