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公开(公告)号：US10427463B2
公开(公告)日：2019-10-01
申请号：US15353048
申请日：2016-11-16
发明人： Claude Schweitzer , Jean-Louis Marie Félicien Thomas , Bodo Ahrens , Giorgio Agostini , Laurent Carmelo Joseph Andre Pravata , Gabor Kaszas , Karen Karas Burke
摘要： The invention relates to a pneumatic tire comprising a carcass and a tread located radially outward of the carcass and extending between the tire sidewalls; the tread providing a radially outermost tread running surface; the tread comprising a first tread layer comprising a first rubber compound and a second tread layer comprising a second rubber compound; wherein the second tread layer is located radially adjacent to the first tread layer; wherein the first rubber compound is compositionally distinct from the second rubber compound; wherein the second tread layer comprises one or more integrally formed extensions of the second tread layer extending radially outwardly toward the tread running surface; wherein each of the integrally formed extensions of the second tread layer comprises a circumferentially continuous groove and a reinforcement zone disposed on a side of the groove; wherein the first rubber compound comprises 100 parts by weight of at least one diene based elastomer, and from 1 to 150 phr of silica; and the second rubber compound comprises a diene base elastomer, from 50 to 120 phr of a filler, wherein at least 20 phr of the filler is a high surface area carbon black having an iodine adsorption number of at least 100 g/kg, from 1 to 45 phr of a methylene acceptor, from 1 to 25 phr of a methylene donor, and from 1 to 30 phr of at least one additive selected from the group consisting of carbamic resins, liquid diene based polymers having a number average molecular weight ranging from 1000 to 25000, and aromatic hydrocarbon resins.
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公开(公告)号：US20190263185A1
公开(公告)日：2019-08-29
申请号：US16197161
申请日：2018-11-20
发明人： Sung Chul LEE , Eun Chang CHUN , Jung Hee CHOI , Chang Hyo HONG
摘要： The present invention relates to a pneumatic tire, and more particularly, to a pneumatic tire having an improved decoupling groove in a shoulder. The pneumatic tire including a tread (100), a sidewall (200), and a bead (300) includes one or more side ring decoupling grooves (400) formed along the circumference of the tire at an upper portion of the sidewall (200), and the side ring decoupling grooves (400) are formed in a direction parallel with the ground coming into contact with the tire while the tire runs.
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公开(公告)号：US10377181B2
公开(公告)日：2019-08-13
申请号：US14834827
申请日：2015-08-25
发明人： Kazuo Shimomura
摘要： In a pneumatic tire, a tread rubber includes a recessed portion extending along a tire-circumferential direction, the recessed portion being placed at a position of a tire-outer surface superposed on an end of the belt portion or at a position of a tire-outer surface on an outer side in a tire-width direction than the former position of the tire-outer surface, an outer wound-up portion is placed closer to a belt portion than an inner wound-up portion, the outer wound-up portion is separated from the belt portion to prevent the outer wound-up portion from being superposed on the belt portion, and the outer wound-up portion is superposed on the recessed portion.
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公开(公告)号：US20190184756A1
公开(公告)日：2019-06-20
申请号：US16210184
申请日：2018-12-05
发明人： Kazuki Ohta
CPC分类号： B60C11/045 , B60C11/01 , B60C2011/013 , B60C2011/0348
摘要： A pneumatic tire is provided with tread rubber that forms a contact patch; and a belt layer which is disposed toward the interior in a tire radial direction from the tread rubber. A shoulder lug portion is provided with a narrow groove that partitions the shoulder lug portion into a main body portion and into a sacrificial portion. A plurality of concavities are open toward both the contact patch at the main body portion and the groove side face, wherein innermost ends in the tire width direction of the respective concavities are disposed so as to be at the same location in the tire width direction as an outermost end in the tire width direction of the belt layer or are arranged toward the exterior in the tire width direction from the outermost end in the tire width direction of the belt layer.
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公开(公告)号：US20190176540A1
公开(公告)日：2019-06-13
申请号：US16277949
申请日：2019-02-15
发明人： Yuji Kodama , Masataka Koishi , Kenichiro Endo
摘要： A circumferential direction protrusion is provided extending longitudinally mainly along a tire circumferential direction on a side outward in a tire radial direction from a maximum tire width position on at least a first tire side portion of a tire.
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公开(公告)号：US20190176531A1
公开(公告)日：2019-06-13
申请号：US16306530
申请日：2017-05-19
发明人： Takahisa Murata
摘要： A pneumatic tire includes first lug grooves and second lug grooves shorter than the first lug grooves provided alternately along a circumferential direction in a shoulder region of a tread section, a first connection groove that connects the second lug groove and a tip end part of the first lug groove, and a second connection groove that connects the first lug groove and a tip end part of the second lug groove. An angle of the first connection groove is greater than an angle of the second connection groove, and an inner end portion in the lateral direction of each of first shoulder blocks, each defined by the first lug groove, the second lug groove, and the first connection groove, is disposed closer to the equator side than an inner end portion in the lateral direction of each of second shoulder blocks.
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公开(公告)号：US20190160875A1
公开(公告)日：2019-05-30
申请号：US16183015
申请日：2018-11-07
发明人： Seiji Yokomakura
摘要： A pneumatic tire includes a tread portion, a side wall portion, a buttress portion provided between the tread portion and the side wall portion, a recessed groove provided in the buttress portion and extending along a tire circumferential direction and small hole lines provided in a tire width direction inner side of a contact ground end in the tread portion, in which the small hole lines have a plurality of small holes provided at intervals along the tire circumferential direction, and the small holes communicate with the recessed groove.
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公开(公告)号：US20190135052A1
公开(公告)日：2019-05-09
申请号：US16096850
申请日：2017-04-27
发明人： Gaku OGAWA , Souto NAKAYAMA
摘要： A tire includes a carcass, side-reinforcing rubber, a belt layer, and a tread. The belt layer includes at least two layers and is provided at a tire radial direction outer side of the carcass, each layer including a cord inclined with respect to a tire circumferential direction such that the cords of the belt layers intersect each other. The tread is provided at the tire radial direction outer side of the belt layer. A tire cross-section height SH satisfies SH≥145 mm, and a ground contact width TW of the tread and a maximum tire width direction width of the belt layer satisfies TW
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公开(公告)号：US10259269B2
公开(公告)日：2019-04-16
申请号：US14761478
申请日：2014-01-16
发明人： Masafumi Ito
IPC分类号： B60C13/00 , B60C13/02 , B60C11/01 , B60C11/11 , B60C9/08 , B60C15/00 , B29D30/06 , B29D30/72
摘要： A motorcycle pneumatic tire for travelling over rough terrain, wherein: the tire has a plurality of fin-like projections provided in the tire circumferential direction with intervals therebetween in an outer surface of the sidewall portion such that the fin-like projections each protrude from the outer surface and extend in the tire radial direction; a surface of at least the end portion on the outer side in the tire radial direction of each fin-like projection is formed to have an arcuate configuration protruding toward the tire inner surface side in a cross section in the width direction of the tire; and the arcuate surface of the end portion on the outer side in the tire radial direction of the fin-like projection is smoothly connected to an outer side surface of a shoulder block provided on the outermost side in the tire width direction of the tread portion.
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公开(公告)号：US20190039416A1
公开(公告)日：2019-02-07
申请号：US16037565
申请日：2018-07-17
发明人： Tetsuji Miyazaki
摘要： A pneumatic tire includes: a tread including a tread surface; and a sidewall extending to an inner diameter side in a tire radial direction and formed continuous with an outer end in a tire width direction of the tread. A circumferential groove extending in a tire circumferential direction is formed in the sidewall. The circumferential groove includes a plurality of circumferential groove portions which are arranged at intervals in the tire circumferential direction without overlapping each other in the tire radial direction. Each of the plurality of circumferential groove portions extends obliquely with respect to the tire circumferential direction, and is located in a tire radial direction range which is not less than 4% and not larger than 40%, of a tire sectional height from an outermost diameter end position of the tread surface to the inner diameter side in a side view of the pneumatic tire.
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