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公开(公告)号：US12083833B2
公开(公告)日：2024-09-10
申请号：US17294026
申请日：2019-07-08
发明人： Isao Kuwayama
CPC分类号： B60C19/002 , B60C3/04 , B60C9/08
摘要： A pneumatic radial tire for passenger vehicles of the present disclosure includes a carcass toroidally spanning between a pair of bead portions and including plies of radially arranged cords. A sectional width SW (mm) and an outer diameter OD (mm) of the tire satisfy a predetermined relational expression. At least one noise reducer is provided on an inner surface of the tire. The noise reducer is provided at least in the center region and the shoulder region. Among thicknesses of the noise reducer measured in a direction perpendicular to the inner surface of the tire, a maximum thickness Ts in the shoulder regions is larger than a maximum thickness Tc in the center region.
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公开(公告)号：US20230382163A1
公开(公告)日：2023-11-30
申请号：US18030655
申请日：2021-10-07
发明人： SYLVIE DUCHEMIN , BRUNO GUIMARD , PIERRE MOUREAU
CPC分类号： B60C9/08 , B60C9/1821 , B60C2200/04
摘要： The tire (11) for a passenger vehicle comprises a crown (12), two beads (32), two sidewalls (30) each connecting each bead (32) to the crown (12), and a carcass reinforcement (34) anchored in each bead (32). The tire (11) has a load index Ll such that Ll≥Ll′+1 and Ll′ being the load index of an EXTRA LOAD tire of the same size in accordance with the manual of the ETRTO 2019 standard. The tire (11) has a sidewall height H defined by H=SW×AR/100, where SW is the nominal section width and AR is the nominal aspect ratio of the tire in accordance with the manual of the ETRTO 2019 standard, such that H≥95. The carcass reinforcement (34) comprises two carcass layers (36, 37).
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公开(公告)号：US11780267B2
公开(公告)日：2023-10-10
申请号：US17310975
申请日：2020-03-06
发明人： Takamitsu Chaya
CPC分类号： B60C9/08 , B60C1/0041 , C08L67/02 , B60C2009/045 , B60C2009/0466
摘要： In a pneumatic tire, at least one carcass layer mounted between a pair of bead portions is formed from a carcass cord formed of an organic fiber cord having filament bundles of organic fibers intertwined together, a fineness based on corrected mass of the carcass cord is from 4000 dtex to 8000 dtex, an intermediate elongation of the carcass cord at a sidewall portion under 1.0 cN/dtex load is from 3.3% to 4.2%, and a ratio G/R of an interlayer rubber gauge G between a body portion and a folded back portion to a cord diameter R of the carcass cord, at a contact region where the body portion and the folded back portion are in contact in the carcass layer, is from 0.50 to 0.60.
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公开(公告)号：US11577547B2
公开(公告)日：2023-02-14
申请号：US16606713
申请日：2018-04-05
发明人： Masaaki Miyoshi
摘要： In a pneumatic tire, a partial tie rubber layer is disposed between a carcass layer and an innerliner layer in a limited manner across an entire region excluding end portions near a pair of bead portions; end surfaces on both sides in a tire lateral direction of the partial tie rubber layer are inclined surfaces that form an acute angle with respect to a surface of the partial tie rubber layer on the carcass layer side; and an inclination angle of the inclined surfaces with respect to the surface of the partial tie rubber layer on the carcass layer side is from 20° to 60°.
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公开(公告)号：US11338623B2
公开(公告)日：2022-05-24
申请号：US16619261
申请日：2017-11-30
发明人： Takahiro Tobe
摘要： A ply of a carcass of a pneumatic radial tire includes a turn-up ply and a down ply. The turn-up ply includes: a main body portion disposed between a pair of bead cores; turn-up portions around the bead cores from an inside toward an outside in a tire width direction. The down ply extends up to an inside in a radial direction of the bead cores so as to cover the turn-up ply including the turn-up portions from an outside. A curvature is formed at either one of a down ply predetermined portion of the down ply, which covers a turn-up end portion of the turn-up portion of the down ply from an outside in the tire width direction, and a turn-up ply portion that covers the turn-up end portion of the turn-up portion in the main body portion of the turn-up ply from inside in the tire width direction.
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公开(公告)号：US20210379934A1
公开(公告)日：2021-12-09
申请号：US17284900
申请日：2019-10-16
发明人： Yosuke SASAKI
摘要： To provide a tire that is not only improved in durability, steering stability, and low rolling resistance in high-speed driving but also excellent in tire productivity. A tire including a pair of bead cores (11), a carcass including at least one carcass ply (12) extending between the pair of bead cores (11), a belt (13) including at least one belt layer placed outward in a tire radial direction of the carcass, and at least one belt reinforcement layer (14) placed outward in a tire radial direction of the belt (13), in which a reinforcement cord of at least one of the carcass ply (12) and the belt reinforcement layer (14) includes a cord using a polyamide multifilament including a polycondensate of a dicarboxylic acid including an aromatic dicarboxylic acid with a diamine.
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公开(公告)号：US20210078366A1
公开(公告)日：2021-03-18
申请号：US16772640
申请日：2018-11-21
发明人： Kiichiro SUZUMORI
摘要： Provided is an aircraft tire which has both satisfactory light weight and satisfactory separation durability of carcass ply ends. An aircraft tire (10) includes a pair of bead cores (1), and a carcass (2) extending between the pair of the bead cores (1). In this aircraft tire (10), the carcass (2) includes at least one layer of a turn-up ply (2a) which is composed of a main body (2aa) and folded portions (2ab), and at least one layer of a down ply (2b) which covers a tire width-direction outer side of the respective folded portions (2ab) of the turn-up ply (2a) and extends to at least a tire radial-direction inner side of the respective bead cores (1); rubber-cord reinforcing members (6) are each arranged between the main body (2aa) of an outermost turn-up ply (2a) and the folded portion (2ab) of the turn-up ply (2a) extending to a tire radial-direction outermost side, and between the folded portion (2ab) of the turn-up ply (2a) extending to the tire radial-direction outermost side and an innermost down ply (2b); and cords of the rubber-cord reinforcing members (6) have an elongation at break of not less than 30%.
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公开(公告)号：US20210046720A1
公开(公告)日：2021-02-18
申请号：US17085943
申请日：2020-10-30
申请人： PIRELLI TYRE S.P.A.
摘要： An apparatus for building tyres for vehicle wheels are described. A substantially cylindrical carcass sleeve, having at least one carcass ply, includes consecutively adjacent strip-like elements laid one after the other around the circumferential extension of a substantially cylindrical deposition surface. Circumferentially consecutive strip-like elements laid one after the other form overlap zones along respective longitudinal edges superimposed on each other. Each overlap zone has, along a longitudinal extension thereof, terminal sections that are laterally opposite with respect to an intermediate section. The intermediate section of each overlap zone has greater width than the width of the terminal sections.
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公开(公告)号：US20200062036A1
公开(公告)日：2020-02-27
申请号：US16606713
申请日：2018-04-05
发明人： Masaaki Miyoshi
摘要： In a pneumatic tire, a partial tie rubber layer is disposed between a carcass layer and an innerliner layer in a limited manner across an entire region excluding end portions near a pair of bead portions; end surfaces on both sides in a tire lateral direction of the partial tie rubber layer are inclined surfaces that form an acute angle with respect to a surface of the partial tie rubber layer on the carcass layer side; and an inclination angle of the inclined surfaces with respect to the surface of the partial tie rubber layer on the carcass layer side is from 20° to 60°.
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公开(公告)号：US20180272805A1
公开(公告)日：2018-09-27
申请号：US15761800
申请日：2016-10-05
发明人： Hiroyuki Sato
CPC分类号： B60C11/01 , B60C9/08 , B60C9/20 , B60C9/2006 , B60C9/28 , B60C11/0083 , B60C11/042 , B60C2009/1892 , B60C2009/2016 , B60C2009/2019 , B60C2011/013 , B60C2011/0355 , B60C2200/06 , Y02T10/862
摘要： In a pneumatic tire are defined: a first imaginary line VL1 passing through a ground contact surface in a meridian cross section of a tread portion, a second imaginary line VL2 passing through a bottom portion of a shoulder main groove and parallel to VL1, an intersection point between VL2 and a surface of a shoulder land portion outward of a ground contact edge T in a lateral direction, and an equatorial plane CL. Given A as a distance in the lateral direction between an intersection point P and CL, B as a groove depth of the shoulder main groove, and C as a distance in the lateral direction between T and CL, 0.80≤(B+C)/A≤1.15 is satisfied and, given E as a distance in the lateral direction between the bottom portion of the shoulder main groove and P, 2.0≤E/B≤5.0 is satisfied.
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