Patent classifications
B60C2009/2266
HEAVY-DUTY TIRE
The present disclosure provides a heavy-duty tire including: a tread part configured to come into contact with a road surface; a steel belt part including one or more steel belts formed inside the tread part; and a reinforcing belt part inserted between the one or more steel belts or between the tread part and the steel belt part, in which the reinforcing belt part is manufactured as a rolling product made by winding a steel cord in a circumferential direction of the tire.
TIRE
A band 20 of a tire 2 includes a full band 48 covering an entirety of a belt 14, and a pair of edge bands 50 disposed so as to be spaced apart from each other in an axial direction and each covering an end 46 of the belt 14. A cross-section of the band 20 includes a large number of cross-sections of a band strip 52. In a cross-section of the full band 48, a plurality of cross-sections of the band strip 52 are aligned with a gap therebetween. In a cross-section of each edge band 50, a plurality of cross-sections of the band strip 52 are aligned without any gap therebetween. An inner end 62 of each edge band 50 is located so as to be spaced apart from a bottom BT of a shoulder circumferential groove 24s in the axial direction.
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.
TEXTILE CORD AND A TIRE COMPRISING A TEXTILE CORD REINFORCEMENT
This invention relates to a passenger car tire comprising a carcass having at least one carcass ply, a tread disposed radially outward of a crown region of the carcass, a belt with a plurality of belt plies arranged between the carcass and the tread, and an overlay structure covering the belt and comprising a helically wound overlay ply strip reinforced by at least one textile cord. The cord comprises from 6 to 10 polyamide monofilament plies having each a density from 300 to 470 dtex, wherein the monofilament plies are twisted together by between 1 and 2 twists per inch to form the cord.
TIRE AND A RUBBER PLY FOR A TIRE
The present invention is directed to a rubber ply for a tire, the rubber ply comprising pairs of textile cords arranged in parallel in a plane, wherein each cord of the pairs of textile cords comprises two cord plies. The distance between two adjacent pairs of textile cords (d.sub.p) is at least 5 times larger than the distance between two parallel textile cords (d.sub.i) within a pair of textile cords, and wherein the two cord plies in one or more of the textile cords are twisted together in a range from 8 TPI to 12 TPI and have each a density ranging from 500 dtex to 2000 dtex. The present invention is also directed to a tire comprising such a rubber ply which is particularly applicable and beneficial for utilization in motorcycle tires.
Pneumatic tire
A pneumatic tire includes a tread portion; sidewall portions; bead portions; a carcass layer disposed extending between the pair of bead portions; a belt layer of a plurality of layers disposed on an outer circumferential side of the carcass layer in the tread portion; and a band-like noise absorbing member adhered to a region corresponding to a tire inner surface of the tread portion along the tire circumferential direction interposed by an adhesive layer. The pneumatic tire further includes a belt cover layer being disposed on an outer circumferential side of the belt layer across an entire width of the belt layer, the belt cover layer including organic fiber cords arranged in the tire circumferential direction; and a rate of change of a dynamic loaded radius when traveling at 270 km/h with respect to a dynamic loaded radius when traveling at 30 km/h being restricted to 2.0% or less.
Radial tire having an improved belt structure
A radial tire comprises a multilayer composite laminate (10) comprising at least three superposed layers of reinforcers (110, 120, 130), the reinforcers being unidirectional within each layer and embedded in a thickness of rubber (C1, C2, C3, respectively), with a first layer of rubber (C1) comprising at least one row of heat-shrinkable circumferential textile reinforcers (110), for example made of nylon or polyester. The first layer radially (in the direction Z) surmounts two other layers (C2, C3) comprising metal reinforcers (120, 130) which are crossed from one layer to the next, in the form of steel monofilaments of a diameter between 0.20 mm and 0.50 mm. The reinforcers (110) made of heat-shrinkable textile material are tapes of thickness denoted “T” between 0.1 mm and 1 mm, and of thickness denoted “W” between 2 and 50 mm.
Tire comprising fabric strips
The present invention relates to a tire including a fabric strip, and the tire includes a fabric strip in a belt layer, the fabric strip including a plurality of warps arranged in parallel to one another and wefts arranged to weave the warps. The tire according to the invention is advantageous in that the production process is simplified, the production cost required during the production process is lowered, the weight of the tire is reduced, and the fuel efficiency is increased when a car using the tire of the invention is driven, by reducing the resistance to rolling.
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.
PNEUMATIC VEHICLE TIRE FOR A VEHICLE
The invention relates to a pneumatic vehicle tire for passenger cars comprising a carcass (2), a tread (6) and a belt (7) which has belt plies (7a, 7b) and which is covered radially outwardly by a belt bandage (8) having strengthening elements oriented approximately in the circumferential direction, wherein the belt bandage (8) has at least one belt bandage ply (8a) whichas viewed in the tire cross sectionconsists of three sections, namely a central section (10) and two lateral sections (11, 12), wherein one lateral section (11) is arranged to the left of the central section (10) and one lateral section (12) is arranged to the right of the central section (10) and wherein the strengthening elements of the central section (10) have the construction x1 and wherein the strengthening elements of the two lateral sections (11, 12) have identical cords consisting of at least two twisted-together yarns.
The invention is distinguished by the fact that the two lateral sections (11, 12) are arranged next to the central section (10), that is to say without overlapping with the central section (10), that the density of the strengthening elements in the central section (10) is less than the density of the strengthening elements in the lateral sections (11, 12), and that the end of the lateral sections (13) that points toward the central section (10) in each case has a distance (14) of 5 mm-30 mm, preferably a distance (14) of 5 mm-15 mm, from the outer end of the widest belt ply (15), where the distance (14) is measured in the axial direction (aR).