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1. 发明公开

EP3393823A1 PNEUMATIQUE POUR VEHICULE PORTANT DES LOURDES CHARGES COMPRENANT UNE NOUVELLE BANDE DE ROULEMENT 有权
公开(公告)号：EP3393823A1
公开(公告)日：2018-10-31
申请号：EP16826424.0
申请日：2016-12-21
申请人： Compagnie Générale des Etablissements Michelin
发明人： FLEURY, Etienne , VALLAT, Perrine , LOPITAUX, Garance
IPC分类号： B60C1/00
CPC分类号： B60C1/0016 , B60C2200/06
摘要： The invention concerns a tyre intended to equip a vehicle carrying heavy loads, said tyre comprising a tread having at least one rubber composition made from at least: - an elastomer matrix comprising, for the most part, a styrene-butadiene copolymer having a glass transition temperature Tg strictly greater than -65 °C and less than or equal to -30 °C, - a reinforcing filler comprising, for the most part, silica, - a chemical cross-linking system, - a coupling agent, and - a plasticising system comprising between 0 and 15 phr, preferably between 0 and 9 phr, of at least one plasticising resin having a glass transition temperature Tg greater than or equal to 20 °C, the total amount of the plasticising system in the composition being between 0 and 17 phr.

2. 发明授权

EP2886371B1 Heavy duty tire 有权
公开(公告)号：EP2886371B1
公开(公告)日：2018-10-31
申请号：EP14192968.7
申请日：2014-11-13
申请人： Sumitomo Rubber Industries, Ltd.
发明人： Todoroki, Daisuke
IPC分类号： B60C11/03
CPC分类号： B60C11/04 , B60C9/1835 , B60C11/0306 , B60C2011/0033 , B60C2011/0346 , B60C2011/0365 , B60C2011/0372 , B60C2011/0388 , B60C2200/06
摘要： Heavy duty tire, wherein a distance t1 from the radially outer surface of a belt layer (7) to the tire's inner surface is 15 to 23 mm when measured along a tire radial direction line (13) passing through the bottom of a shoulder main groove (12); the width of the shoulder main groove (12) is more than the width of a center main groove (11); the ratio Wc: Wm: Ws of the average width Wc of a center land portion (20), the average width wm of a middle land portion (30), and the average width Ws of a shoulder land portion (40) is 1.00 : 1.00 to 1.08: 1.03 to 1.13; the middle land portion (30) is provided with a plurality of middle axial grooves (31); the shoulder land portion (40) is provided with a plurality of shoulder axial grooves (41); the width of the shoulder axial groove (41) is more than the width of the middle axial groove (31); the angle ¸s of the shoulder axial groove (41) is more than the angle ¸m of the middle axial groove (31) with respect to the tire axial direction.

3. 发明公开

EP3390104A1 PNEUMATIQUE PRESENTANT DES PROPRIETES D'USURE ET DE RESISTANCE AU ROULEMENT AMELIOREES 审中-公开
公开(公告)号：EP3390104A1
公开(公告)日：2018-10-24
申请号：EP16825505.7
申请日：2016-12-14
申请人： Compagnie Générale des Etablissements Michelin
发明人： GERVAIS, Philippe , GODEAU, Gilles , QUANTINET, Benjamin , ZIVKOVIC, Tony
IPC分类号： B60C9/20 , B60C11/12 , B60C11/03 , B60C9/18 , B60C9/22
CPC分类号： B60C9/2006 , B60C9/185 , B60C9/22 , B60C11/0323 , B60C11/125 , B60C11/1281 , B60C2009/1842 , B60C2009/2064 , B60C2011/1209 , B60C2200/06 , Y02T10/862
摘要： The invention relates to a tire including a crown reinforcement consisting of at least two working crown plies (41, 43) of reinforcement elements, and at least one ply (42) of circumferential reinforcement elements, a ply C being arranged between the ends of the working crown plies. According to the invention, the tread has at least one indentation consisting of at least two portions (8, 9), the ratio of the width measured at the bottom of the first portion (9) to the width measured on the surface of the tread on a new tire of said at least one first portion being strictly greater than 2, the ratio of the width measured on the surface of the tread on a new tire of the second portion (8) to the width measured at the bottom of said at least one second portion being no less than 1, the modulus of elasticity under tension at 10% elongation of the ply C being greater than 9 MPa and the maximum value of tan(8), denoted tan(8)
max , of the ply C being less than 0.100. FIGURE 1

4. 发明公开

EP3390095A1 PNEUMATIQUE PRESENTANT DES PROPRIETES D'USURE ET DE RESISTANCE AU ROULEMENT AMELIOREES 审中-公开
公开(公告)号：EP3390095A1
公开(公告)日：2018-10-24
申请号：EP16825495.1
申请日：2016-12-14
申请人： Compagnie Générale des Etablissements Michelin
发明人： GERVAIS, Philippe , GODEAU, Gilles , QUANTINET, Benjamin , ZIVKOVIC, Tony
IPC分类号： B60C9/20 , B60C11/12 , B60C11/03 , B60C9/18 , B60C9/22
CPC分类号： B60C9/185 , B60C9/2006 , B60C9/22 , B60C11/0323 , B60C11/1281 , B60C2009/1842 , B60C2009/2064 , B60C2011/1209 , B60C2200/06 , Y02T10/862
摘要： The invention relates to a tyre comprising a crown reinforcement formed by at least two working crown layers (41, 43) of reinforcing elements and at least one layer (42) of circumferential reinforcing elements. According to the invention, the tread includes a plurality of transverse notches (9) defined by opposing walls of a material, the depth of at least one transverse notch, measured on a new tyre, being greater than or equal to 40% of the thickness of the tread, and the width measured at the base of said at least one transverse notch being strictly greater than 4mm. The tensile modulus of elasticity at 10% elongation of at least one skim coat of at least one working crown layer is greater than 9 MPa, and the maximum tan(δ) value, denoted tan(δ)max, of the at least one skim coat of at least one working crown layer is less than 0.100. Fig. 2.

5. 发明公开

EP3390089A1 PNEUMATIQUE PRESENTANT DES PROPRIETES D'USURE ET DE RESISTANCE AU ROULEMENT AMELIOREES 审中-公开
公开(公告)号：EP3390089A1
公开(公告)日：2018-10-24
申请号：EP16825488.6
申请日：2016-12-14
申请人： Compagnie Générale des Etablissements Michelin
发明人： GERVAIS, Philippe , GODEAU, Gilles , QUANTINET, Benjamin , ZIVKOVIC, Tony
IPC分类号： B60C9/20 , B60C11/12 , B60C11/03 , B60C9/18 , B60C9/22
CPC分类号： B60C9/2006 , B60C9/185 , B60C9/22 , B60C11/0323 , B60C11/125 , B60C11/1281 , B60C2009/1842 , B60C2009/2064 , B60C2011/1209 , B60C2200/06 , Y02T10/862
摘要： The invention relates to a tyre including a crown reinforcement made up of at least two working crown plies (41, 43) of reinforcement elements and at least one ply (42) of circumferential reinforcement elements, a ply C being arranged between the ends of the working crown plies. According to the invention, the tread has at least one cut-out made up of at least two portions, the ratio of the width measured at the bottom of the first portion to the width measured on the surface of the tread on a new tyre of said at least one first portion being strictly greater than 2, the ratio of the width measured on the surface of the tread on a new tyre of the second portion to the width measured at the bottom of said at least one second portion being no lower than 1, and the modulus of elasticity under tension at 10 % elongation of the ply C is less than 8 MPa, the maximum value of tan(8), noted as tan(8)max, of the ply C being less than 0.100. FIGURE 1

6. 发明授权

EP2228238B1 Heavy-load tire 有权
公开(公告)号：EP2228238B1
公开(公告)日：2018-10-10
申请号：EP10002522.0
申请日：2010-03-10
申请人： Sumitomo Rubber Industries, Ltd.
发明人： Yamazaki, Kazumi
IPC分类号： B60C5/14 , B60C9/14 , B60C15/06 , B60C15/00
CPC分类号： B60C15/06 , B60C5/142 , B60C9/14 , B60C2015/009 , B60C2015/0614 , B60C2200/06 , Y10T152/10819 , Y10T152/10828
摘要： A heavy-load tire (1) comprises a tread portion (2), a pair of sidewall portions (3), a pair of bead portions (4) each with a bead core (5) therein, a carcass (6) comprising a carcass ply of cords including a main portion (6a) extending between the bead cores (5) , and a pair of turnup portions (6b) each turned up around the bead core (5) from the axially inside to the outside of the tire, and an inner liner (10) made from air-impermeable rubber and disposed on the tire internal cavity surface, wherein each bead portion (4) includes a bead reinforcing layer (9) with an L-shaped cross section, the bead reinforcing layer (9) comprising an axially outer piece portion (9a) disposed along the axially outer surface of the turnup portion (6b) and a bottom piece portion (9b) integral with the outer piece portion (9a) and terminating in a sub-core area (J) between a first radial line (41) extending inwards along the radial direction of the tire from an innermost axial point (Pi) of the bead core (5), and a second radial line (Y2) extending inwards along the radial direction of the tire from an outermost axial point (Po) of the bead core (5), the inner liner (10) includes a radially inner portion (10E) that terminates radial inside than a lateral reference line (x) passing through the innermost axial point and outermost axial point of the bead core (5), a rubber thickness (ta) is in a range of from 2.5 to 5.0 mm ranging from the tire internal cavity surface (i) to the cord of the carcass ply (6a) on the lateral reference line (x), and an inner liner thickness (tb) is smaller than the rubber thickness (ta) and is in a range of from 0.5 to 3.0 mm on the lateral reference line (x).

7. 发明公开

EP3363655A1 HEAVY-DUTY PNEUMATIC TIRE 审中-公开
公开(公告)号：EP3363655A1
公开(公告)日：2018-08-22
申请号：EP18155659.8
申请日：2018-02-08
申请人： Sumitomo Rubber Industries, Ltd.
发明人： LI, Qingmao
IPC分类号： B60C11/04 , B60C11/12 , B60C11/03
CPC分类号： B60C11/1236 , B60C11/047 , B60C11/1204 , B60C2011/0351 , B60C2011/0353 , B60C2011/0355 , B60C2011/0362 , B60C2011/0365 , B60C2011/0367 , B60C2011/0381 , B60C2011/0386 , B60C2011/0388 , B60C2200/06
摘要： A heavy-duty pneumatic tire comprises a crown rib 4C and a middle rib 4M. The crown rib 4C is provided with crown sipes 6 crossing the crown rib 4C. The middle rib 4M is provided with middle sipes 7 crossing the middle rib 4M and a middle shallow groove 9 having a smaller depth and a larger width than the middle sipes 7. The middle shallow groove 9 comprises a circumferential middle shallow groove 10 extending in a tire circumferential direction and lateral middle shallow grooves 11 extending from an axially inner side edge (Ema) of the middle rib 4M to the circumferential middle shallow groove 10 so as to terminate at a position thereof.

8. 发明公开

EP3360699A1 HEAVY DUTY TIRE AND AND METHOD FOR MANUFACTURING THE SAME 有权
公开(公告)号：EP3360699A1
公开(公告)日：2018-08-15
申请号：EP18154209.3
申请日：2018-01-30
申请人： Sumitomo Rubber Industries, Ltd.
发明人： MAEHARA, Atsushi
IPC分类号： B60C11/00 , B60C3/04
CPC分类号： B60C11/0083 , B29D30/0606 , B60C3/04 , B60C9/28 , B60C11/0306 , B60C2011/0365 , B60C2200/06
摘要： A heavy-duty tire includes a tread portion (2) including a crown land portion (11c), a shoulder land portion (11s) with a tread edge (Te) and a middle land portion (11m) disposed therebetween. In a tire cross-section of a 5% inflated state, the tread portion (2) comprises a surface profile which comprises an inner arc portion (J1) having a radius (R1) of curvature with a center located in a tire equatorial plane and an outer arc portion (J2) having a radius (R2) of curvature smaller than the radius (R1) of curvature of the inner arc portion (J1) and intersecting the inner arc portion (J1) at an inflection point (P). The inflection point (P) is located on the middle land portion (11m), wherein a distance (Lp) in the tire axial direction from the tire equatorial plane (C) to the inflection point (P) is in a range of from 0.35 to 0.50 times a tread half-width (Wt).

9. 发明授权

EP2781368B1 HEAVY LOAD PNEUMATIC RADIAL TIRE 有权
公开(公告)号：EP2781368B1
公开(公告)日：2018-08-08
申请号：EP12849234.5
申请日：2012-11-12
申请人： Bridgestone Corporation
发明人： YAMADA, Atsushi
IPC分类号： B60C9/28 , B60C11/01
CPC分类号： B60C9/28 , B60C2011/013 , B60C2200/06
摘要： A heavy load pneumatic radial tire according to the present invention includes in order, on the radial direction outer side of a carcass extending toroidally between a pair of bead portions, at least one belt reinforcing layer, two or more inclined belt layers, and a tread. When the tire is mounted on a prescribed rim, with prescribed internal pressure applied and in a no-load condition, a width direction edge of the belt reinforcing layer is located further toward the width direction outer side than the tread edge.

10. 发明授权

EP3160769B1 PNEUMATIQUE PRESENTANT DES PROPRIETES DYNAMIQUES AMELIOREES 有权转让
公开(公告)号：EP3160769B1
公开(公告)日：2018-07-25
申请号：EP15726100.9
申请日：2015-05-27
申请人： Compagnie Générale des Etablissements Michelin
发明人： REHAB, Hichem , GUPTA, Mukul , SALGUES, Nathalie , BESSON, Jacques
IPC分类号： B60C9/18
CPC分类号： B60C9/185 , B60C9/1835 , B60C9/2006 , B60C9/28 , B60C2001/0066 , B60C2001/0075 , B60C2009/1878 , B60C2009/2016 , B60C2009/2019 , B60C2009/2064 , B60C2200/06

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