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公开(公告)号：US20230137115A1
公开(公告)日：2023-05-04
申请号：US17768967
申请日：2020-10-09
发明人： GAEL ROTY , RICHARD CORNILLE , SABRINA RIH
摘要： A tire comprises a crown reinforcement comprising: a working reinforcement comprising a single working layer and a hoop reinforcement arranged radially outside the working reinforcement and comprising at least one hooping filamentary reinforcing element (170) wound circumferentially helically so as to extend axially from one axial edge to the other axial edge of the hoop reinforcement. The or each hooping filamentary reinforcing element (170) consists of: two multifilament strands (1701, 1702) of aromatic polyamide or aromatic copolyamide and one multifilament strand (1703) of aliphatic polyamide or of polyester, or three polyester multifilament strands, each multifilament strand (1701, 1702, 1703) being wound in a helix around a main axis (W) common to the three multifilament strands (1701, 1702, 1703). The hoop reinforcement has a tangent modulus at 1.3% elongation ranging from 200 to 650 daN/mm.
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公开(公告)号：US20230030693A1
公开(公告)日：2023-02-02
申请号：US17785489
申请日：2020-12-02
发明人： Yosuke SASAKI
摘要： Provided is a tire in which low rolling resistance is improved by using reinforcing cords containing polyamide multifilaments as reinforcing cords of a reinforcing member of the tire. In a tire (10) that includes at least one belt reinforcing layer (3) covering the full width of a belt (2), the belt reinforcing layer (3) includes, as a constituent, a rubber-cord composite that is formed of a rubber and reinforcing cords containing multifilaments of a semi-aromatic polyamide composed of a polycondensate of an aromatic dicarboxylic acid-containing dicarboxylic acid and a non-aromatic diamine, or a polycondensate of a non-aromatic dicarboxylic acid and an aromatic diamine-containing diamine acid; and, when the width of a maximum-width belt layer constituting the belt (2) is defined as W, a region of at least more than 0.35 W from a tire equatorial plane is a sparse region in terms of the end count of the reinforcing cords in the belt reinforcing layer (3), while regions on the tire width-direction outer side of the sparse region are dense regions.
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公开(公告)号：US11565550B2
公开(公告)日：2023-01-31
申请号：US16087860
申请日：2017-03-31
摘要： A tire for a two-wheeled motorized vehicle includes a tread joined by two sidewalls to two beads, the tread having first and second elastomer compositions, crown reinforcement, radially inside tread having a crown layer having mutually parallel circumferential reinforcers forming an angle at most equal to 5° to the circumferential direction, a carcass reinforcement, radially inside crown reinforcement, having turnup. Carcass reinforcement includes mutually parallel reinforcers, and wrapped, in each bead, from the inside to the outside of the tire, about bead wire in order to form turnup having free end E2. Carcass reinforcement includes crown portion and lateral portion, crown portion extending axially between first and second ends E2, E′2, E2 and E′2 being symmetric to equatorial plane P of the tire, lateral portion extending symmetrically to equatorial plane P radially towards the inside, from radially outermost end E2 to fourth end E4 disposed at the bead wire.
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公开(公告)号：US11498364B2
公开(公告)日：2022-11-15
申请号：US16959073
申请日：2017-12-30
发明人： Patrick Jon Buresh , Jason Schoenmaker , Robert Dillon , Phillip William Check , William Marshall Thompson
摘要： Embodiments of the disclosure include a pneumatic tire having improved high speed limits while generally maintaining wear, traction, and handling performance. Said tires include a cap ply extending substantially across a full width of at least one of the belt plies and being arranged at least partially within each shoulder, the cap ply forming a layer of elastomeric material reinforced with a plurality of elongate reinforcements spaced apart in an array, the cap ply being characterized as having a rupture force greater than 210 N per 15 mm of the cap ply width. In each shoulder area of said tires, the tread is characterized as being flatter and having a greater tread thickness.
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公开(公告)号：US11331952B2
公开(公告)日：2022-05-17
申请号：US16212182
申请日：2018-12-06
发明人： Wataru Isaka
摘要： A pneumatic tire comprises a mesh reinforcing layer formed from a tape wound circumferentially of the tire plural turns while repeating a zigzag unit comprising two inclined portion so that a number N of the repeated zigzag units are arranged while shifting in the tire circumferential direction and partly overlapping with each other. The amount of positional shift between the circumferentially adjacent zigzag units is in a range from 0.7 to 1.3 times a value of 360/N in terms of the angle α around the tire rotational axis.
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公开(公告)号：US11305583B2
公开(公告)日：2022-04-19
申请号：US15786490
申请日：2017-10-17
发明人： Hideki Hamanaka
摘要： A pneumatic tire comprises a carcass layer, a belt layer disposed on an outer side of the carcass layer in a tire radial direction, and a tread rubber disposed on the outer side of the belt layer in the tire radial direction. The belt layer formed by laminating an angle belt having a belt angle ≥45° and ≤70° in absolute values, a pair of cross belts, having belt angles of ≥10° and ≤45° in absolute values and having belt angles of mutually opposite signs, and a circumferential reinforcing layer having a belt angle within a range of ±5° with respect to a tire circumferential direction. A tread width TW and a cross-sectional width Wca of the carcass layer have a relationship such that 0.82≤TW/Wca≤0.92. A width Ws of the circumferential reinforcing layer and a cross-sectional width Wca of the carcass layer such that 0.60≤Ws/Wca≤0.70.
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公开(公告)号：US11273674B2
公开(公告)日：2022-03-15
申请号：US16326079
申请日：2017-06-22
发明人： Daisuke Maehara
摘要： In my pneumatic tire, a circumferential belt is formed by a spirally wound band strip, the tread includes at least three circumferential land portions, cords of the inclined belt layer are steel cords, the total cross-sectional area of the steel cords per 25 mm of width perpendicular to the extending direction of the steel cords is from 2.3 to 4.0 mm2, a gap is present in the tire width direction between each lap of the band strip, and the relational expression W/{(w+2d)+0.3×w}≥1.0 is satisfied, where W is the width in the tire width direction of the circumferential land portion with the smallest width among the circumferential land portions, w is the width of the band strip in the tire width direction, and d is the width of the gap in the tire width direction between each lap of the band strip.
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公开(公告)号：US20220063415A1
公开(公告)日：2022-03-03
申请号：US17414505
申请日：2019-12-17
摘要： The carcass of the pneumatic tire includes a plurality of carcass cords formed of conductors and arranged along the tire radial direction and the tire width direction, and a circumferential cord formed of conductors and arranged along the tire circumferential direction. The circumferential cord contacts the carcass cord.
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公开(公告)号：US20220032689A1
公开(公告)日：2022-02-03
申请号：US17276024
申请日：2019-09-05
发明人： Elodie LE CHENADEC , Cédric KHAYAT
摘要： Improve endurance of tire for heavy-duty vehicle of construction plant type. A hoop reinforcement has an axially continuous first hooping layer and axially discontinuous second hooping layer, first layer has an axial width LF1 at least equal to 25% and at most 75% of axial width LT of working reinforcement, the discontinuous second hooping layer consists of two hooping strips symmetrical with respect to equatorial plane (XZ) of tire, each extends axially from axially interior end as far as axially exterior end over an axial width LF2 which is at least equal to 10% and at most 35% of axial width LF1 of the first hooping layer, and the distributed tension at break TR of each hooping strip defined as the product of number D of reinforcers per mm times the force at break FR of each reinforcer expressed in daN, is at least equal to 100 daN/mm.
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公开(公告)号：US20220024255A1
公开(公告)日：2022-01-27
申请号：US17369217
申请日：2021-07-07
发明人： Masayuki FUJITA
摘要： A pneumatic tire includes a tread portion, a pair of sidewall portions, a pair of bead portions, a carcass extending between the bead portions through the tread portion and the sidewall portions, a belt layer disposed radially outwardly of the carcass, a band layer disposed radially outwardly of the belt layer, and a pair of belt-edge rubbers disposed between the belt layer and the band layer to cover axially outer edges of the belt layer. The band layer includes a full band and a pair of edge bands covering the axially outer edges of the belt layer. The pair of edge bands includes one or more organic fiber cords each having restraining force in a range from 5 to 35 N at radially outward locations of the outer edges of the belt layer.
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