-
公开(公告)号：US20230294460A1
公开(公告)日：2023-09-21
申请号：US18021522
申请日：2021-07-20
发明人： Kenji HAMAMURA , Hiroki KAWAI , Subaru TOYA
CPC分类号： B60C15/06 , B60C11/13 , B60C13/00 , B60C3/04 , B60C2013/006
摘要： A pneumatic tire is provided which has sufficiently reduced rolling resistance during high-speed running and which has excellent durability. The pneumatic tire has a bead portion, carcass and tread, wherein: a bead-reinforcing layer that reinforces the bead portion from outside of the carcass is provided outside of the carcass in the tire axis direction; and the pneumatic tire satisfies (formula 1) and (formula 2) below, where Wt (mm) is the cross-sectional width of the tire when the tire installed on a standardized rim and the internal pressure is 250 kPa, Dt (mm) is the outer diameter, and the virtual volume V (mm3) is the volume of the space occupied by the tire.
1600≤(Dt2×π/4)/Wt≤2827.4 (formula 1)
[(V+1.5×107)/Wt]≤2.88×105 (formula 2)-
公开(公告)号：US20210129599A1
公开(公告)日：2021-05-06
申请号：US16478439
申请日：2018-01-29
发明人： Masako NAKATANI , Takahiro KAWACHI , Ayuko YAMADA , Noboru OKABE , Keiji TAKAGI , Natsuki MAEKAWA , Kenji HAMAMURA , Subaru TOYA
IPC分类号： B60C19/00
摘要： A pneumatic tyre 1 includes a carcass 6 extending between bead cores of bead portions via a tread portion 2 and sidewall portions, and a belt layer 7 arranged on an outer side in a tyre radial direction of the carcass 6 and inside of the tread portion 2. The pneumatic tyre 1 has a damping rubber body 30 arranged between the carcass 6 and the belt layer 7, and a noise damper 20 arranged on an inner cavity surface of the tread portion 2. A width W1 in a tyre axial direction of the damping rubber body 30 is in a range of from 60% to 130% of a width W2 in the tyre axial direction of the belt layer 7, and air permeability of the noise damper 20 measured in accordance with the Japanese Industrial Standard JIS-L1096 is 3.0 cm3/cm2/s or less.
-
公开(公告)号：US20240208267A1
公开(公告)日：2024-06-27
申请号：US18287420
申请日：2022-02-02
发明人： Kenji HAMAMURA
CPC分类号： B60C1/0016 , B60C11/03 , C08K3/04 , C08K3/36 , C08K5/548 , C08L9/00 , B60C2011/0355 , C08K2201/005 , C08K2201/006 , C08L2205/03
摘要： Provided is a tire comprising a tread part, the tread part having at least one rubber layer, wherein a ratio (G/WL) of a tire weight G (kg) to the maximum load capacity WL (kg) of the tire is 0.0160 or less, wherein the tread part has land parts partitioned by tread edge and a plurality of circumferential grooves extending continuously in a tire circumferential direction, wherein a first rubber layer of the tread surface is composed of a rubber composition comprising a rubber component, and wherein a contact angle θ with a pure water of the rubber composition is 105° or more.
-
公开(公告)号：US20230311586A1
公开(公告)日：2023-10-05
申请号：US18022646
申请日：2021-08-23
发明人： Kenji HAMAMURA , Hiroki KAWAI , Subaru TOYA
CPC分类号： B60C15/06 , B60C11/033 , B60C2200/04 , B60C2015/0614
摘要： A pneumatic tire having a side portion and a clinch portion, wherein: in a meridian cross section, the distance from a bead baseline to the outside portion in the width direction of the clinch portion is greater than the distance to the inside portion in the width direction; the E*S of the side portion, as measured at 70° C., a frequency of 10 Hz, an initial distortion of 5%, and a distortion rate of 1%, is less than the E*C of the clinch portion; and, formulas (1) and (2) are satisfied:
1600≤(Dt2×π/4)/Wt≤2827.4 (1)
[(V+1.5×107)/Wt]≤2.88×105 (2)
where Wt is the cross-sectional width of the tire installed on a standardized rim and filled with air to an internal pressure of 250 kPa, Dt is the outer diameter, and V is the volume of the tire.-
公开(公告)号：US20230173844A1
公开(公告)日：2023-06-08
申请号：US17997104
申请日：2021-03-11
发明人： Kenji HAMAMURA
IPC分类号： B60C1/00 , C08L7/00 , C08L9/06 , C08L25/08 , C08L53/02 , C08L91/00 , C08K3/04 , C08K3/36 , B60C11/00
CPC分类号： B60C1/0016 , C08L7/00 , C08L9/06 , C08L25/08 , C08L53/02 , C08L91/00 , C08K3/04 , C08K3/36 , B60C11/0008 , C08L2207/04 , C08K2201/005 , C08K2201/006 , B60C2011/0025
摘要： Provided is a tire comprising a tread part, the tread part comprising at least one rubber layer of a rubber composition comprising a rubber component and a thermoplastic elastomer, wherein a ratio (WT/WL) of a tire weight WT (kg) to a maximum load capacity WL (kg) of the tire is 0.0180 or less, wherein, in a dynamic viscoelasticity test (temperature-dependent measurement at 10 Hz) in accordance with JIS K 6394, the thermoplastic elastomer exhibits a tan δ peak value in a range of −20° C. to 20° C., and the peak value is 1.00 or more. While being lightweight, the tire can improve in ride comfort and particularly suppress deterioration of ride comfort due to abrasion.
-
公开(公告)号：US20230373247A1
公开(公告)日：2023-11-23
申请号：US18030850
申请日：2021-09-06
发明人： Kenji HAMAMURA
CPC分类号： B60C1/0016 , C08K3/04 , C08K3/36 , C08L7/00 , C08L9/06 , B60C11/0075 , B60C11/0008 , B60C11/1236 , B60C2011/0025 , B60C2011/0033 , B60C2011/0355
摘要： A tire comprising a tread part, wherein a ratio (G/WL) of a tire weight G (kg) with respect to a maximum load capability WL (kg) of the tire is 0.0131 or less, the tread comprises at least one rubber layer composed of a rubber composition comprising a rubber component and a reinforcing filler, tan δ at 30° C. (30° C. tan δ) of the rubber composition is over 0.15, and complex modulus at 30° C. (E*30) of the rubber composition is less than 8.0 MPa, and a ratio (30° C. tan δ/G) of the 30° C. tan δ with respect to the G is 0.016 or more.
-
公开(公告)号：US20230286330A1
公开(公告)日：2023-09-14
申请号：US18018103
申请日：2021-07-26
发明人： Kenji HAMAMURA , Hiroki KAWAI , Subaru TOYA
摘要： Provided is a pneumatic tire that has reduced rolling resistance during high-speed running as well as excellent durability performance. This pneumatic tire comprises a sidewall and a clinch section in each of a pair of side sections. When the loss tangent of the sidewall is tan δsw and the loss tangent of the clinch section is tan δc when measured under the conditions of 70° C., a frequency of 10 Hz, an initial strain of 5%, and a dynamic strain rate of 1%, then (tan δsw+tan δc)≤0.3 and |tan δsw−tan δc|≤0.07. When the cross-sectional width of the tire is Wt (mm) and the external diameter is Dt (mm) when the pneumatic tire is installed on a standardized rim and internal pressure is set to 250 kPa, and if the volume of space occupied by the tire is a virtual volume V (mm3), then (formula 1) and (formula 2) are satisfied.
1700≤(Dt2×π/4)/Wt≤2827.4 (formula 1)
[(V+1.5×107)/Wt]≤2.88×105 (formula 2).-
公开(公告)号：US20230264519A1
公开(公告)日：2023-08-24
申请号：US18017616
申请日：2021-07-26
发明人： Kenji HAMAMURA , Hiroki KAWAI , Subaru TOYA
CPC分类号： B60C3/04 , B60C1/0016 , B60C11/0008 , B60C2200/04 , B60C2011/0025
摘要： A pneumatic tire is provided which has sufficiently reduced rolling resistance during high-speed running and which has sufficiently improved durability. In this pneumatic tire, which has a tread, at least one rubber layer forming the tread includes a rubber component containing styrene butadiene rubber and isoprene rubber, and is formed from a rubber composition with a loss tangent (30° C. tan δ) less than or equal to 0.14, measured under the conditions of 30° C., frequency 10 Hz, initial strain 5%, and dynamic strain rate 1%; defining Wt (mm) as the cross-section width, Dt (mm) as the outer diameter and virtual volume V (mm3) as the volume of the space occupied by the tire when said tire is installed on the standardized rim and has an internal pressure of 250 kPa, the pneumatic tire satisfies (Formula 1) and (Formula 2).
1600≤(Dt2×π/4)/Wt≤2827.4 (Formula 1)
[(V+1.5×107)/Wt]≤2.88×105 (Formula 2)-
公开(公告)号：US20230219370A1
公开(公告)日：2023-07-13
申请号：US17996597
申请日：2021-04-09
发明人： Kenji HAMAMURA
CPC分类号： B60C1/0016 , B60C11/005 , B60C11/0008 , C08L9/06 , C08L7/00 , B60C2011/0025 , B60C2011/0355
摘要： Provided is a tire comprising a tread, wherein a ratio of a tire weight G (kg) to a maximum bad capacity WL (kg) of the tire (G/WL) is 0.0150 or less, wherein the tread has at least one rubber layer formed of a rubber composition comprising a rubber component and a reinforcing filler, and wherein a tan at 30° C. of the rubber composition is 0.15 or less, and a complex elastic modulus at 30° C. (E*30) of the rubber composition is 8.0 MPa or less.
-
公开(公告)号：US20230294455A1
公开(公告)日：2023-09-21
申请号：US18021230
申请日：2021-07-29
发明人： Kenji HAMAMURA , Hiroki KAWAI , Subaru TOYA
CPC分类号： B60C3/04 , B60C11/0008 , B60C2011/0025
摘要： Provided is a pneumatic tire with which any change in steering stability between low-speed running and high-speed running is sufficiently minimized, and durability is also sufficiently improved. This pneumatic tire has a belt layer radially inward of the tread portion, wherein the ratio (tan δ/E*) of the loss tangent (tan δ) to the complex elastic modulus E*(MPa) of the rubber composition constituting the belt layer, as measured under the conditions of 70° C., frequency 10 Hz, initial distortion 5%, and dynamic distortion rate 1%, is 0.002 to 0.017 (inclusive), and the (formula 1) and (formula 2) are satisfied, where Wt (mm) is the cross-sectional width of the tire, Dt (mm) is the outside diameter, and the virtual volume V (mm3) is the volume of the space occupied by the tire, when the tire is installed on a standardized rim and the internal pressure is 250 kPa.
1700≤(Dt2×π/4)/Wt≤2827.4 (formula 1)
[(V+1.5×107)/Wt]≤2.88×105 (formula 2)
-
-
-
-
-
-
-
-
-
搜索结果
17 条记录 (耗时 0.02 秒)
