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公开(公告)号：US11110750B2
公开(公告)日：2021-09-07
申请号：US16108318
申请日：2018-08-22
发明人： Wako Iwamura , Makoto Sugiya
摘要： An airless tire comprises: a tread ring having a tread, a hub located radially inside the tread ring, and cross radial members connecting the tread ring with the hub. The cross radial members include first radial members and second radial members crossing the first radial members. The length measured along the radial member is not more than 180% of the radial distance between the hub and the tread ring.
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公开(公告)号：US10525776B2
公开(公告)日：2020-01-07
申请号：US15297417
申请日：2016-10-19
发明人： Wako Iwamura , Makoto Sugiya
IPC分类号： B60C7/00 , B60C11/12 , B60C11/03 , B60C7/06 , B60C7/24 , B60C7/10 , B60B3/06 , B60B3/10 , B60C7/18
摘要： An airless tire includes a tread ring having a cylindrical form and a ground contact surface. The tread ring has multiple through holes and a reinforcing body such that the through holes are penetrating through the tread ring in a thickness direction of the tread ring and formed at intervals along a tire circumferential direction and that the reinforcing body includes a first reinforcing body extending in the tire circumferential direction in regions between adjacent through holes, and the first reinforcing body is formed such that the first reinforcing body has end portions in the tire circumferential direction and that the end portions terminate without being exposed from inner peripheral surfaces of the through holes.
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公开(公告)号：US10226967B2
公开(公告)日：2019-03-12
申请号：US15062640
申请日：2016-03-07
发明人： Makoto Sugiya , Wako Iwamura
摘要： An airless tire includes a tread ring having a cylindrical form and a ground contact surface, a hub positioned on radial direction inner side of the tread ring and formed to be fixed to an axle, and a spoke structure connecting the tread ring and hub. The tread ring includes a tread rubber layer forming the ground contact surface, and a reinforcing rubber layer formed on tire radial direction inner side of the tread layer, and the reinforcing layer is formed of a rubber material obtained by co-crosslinking a rubber composition including a rubber component, an α, β-unsaturated carboxylic acid metal salt and a peroxide such that the metal salt has amount in range of 10 to 80 parts by weight with respect to 100 parts by mass of the rubber component and the rubber component has content rate of butadiene rubber in range of 10 to 100% by mass.
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4.发明授权公开(公告)号：US10132721B2
公开(公告)日：2018-11-20
申请号：US15030664
申请日：2014-11-11
发明人： Wako Iwamura , Makoto Sugiya
摘要： A rigidity measurement device of a tread ring comprises a support jig for detachably holding a tread ring unit. The support jig has an open part for deformably exposing a measurement area, which is one portion of the tread ring, to the exterior, and a restraining part for essentially non-deformably restraining a non-measurement area, which is an area other than the measurement area of the tread ring. The restraining part inhibits deformation of the non-measurement area, whereby stress is no longer generated in the non-measurement area and the rigidity of the measurement area alone can be measured.
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公开(公告)号：US10800118B2
公开(公告)日：2020-10-13
申请号：US15679537
申请日：2017-08-17
发明人： Wako Iwamura , Kiyotaka Nishio , Makoto Igarashi , Makoto Sugiya
摘要： A method of manufacturing a tire product comprising: a step of preparing a core-assembly 4 of a rigid core 2 and a rubber member 3 formed on the rigid core 2, wherein the rigid core 2 is attached to a spindle device 7, and the rubber member 3 is to be vulcanization-molded, and constitutes all or a portion of a green tire, a step of conveying the core-assembly 4 from the spindle device 7 into a mold 50, and a step of vulcanization-molding the rubber member 3 on the rigid core 2 in the mold 50. The conveying of the core-assembly includes obtaining the weight of the rubber member 3 included in the core-assembly 4.
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公开(公告)号：US10507693B2
公开(公告)日：2019-12-17
申请号：US15307942
申请日：2015-05-07
发明人： Makoto Sugiya , Wako Iwamura
摘要： Provided is a non-pneumatic tire having excellent durability performance. This non-pneumatic tire is provided with an annular tread portion which contacts the road surface, an annular inner peripheral portion which is positioned radially inward of the tread portion, and multiple linking units which join the tread portion and the inner peripheral portion. The tread portion includes a first portion which contacts the road surface, and a second portion which includes an inner peripheral surface facing the inner peripheral portion. The thermal conductivity of the second portion is greater than that of the first portion.
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公开(公告)号：US10259265B2
公开(公告)日：2019-04-16
申请号：US15310660
申请日：2015-05-07
发明人： Wako Iwamura , Makoto Sugiya
IPC分类号： B60C7/14 , B29D30/02 , B60C13/00 , B29K621/00 , B29L30/00 , B29K705/00 , B29K105/20 , B29K105/24
摘要： An airless tire has a cylindrical tread ring 2 having a ground-contacting surface 21, a hub disposed on the radially inside of the tread ring 2 and fixed to an wheel shaft, and spokes connecting between the tread ring 2 and the hub. The tread ring 2 has a side wall 22 continued from the ground-contacting surface 21 and forming a ring side surface. The side wall 22 has a supporting portion 23 which, when the tread ring 2 alone is horizontally laid on a horizontal surface H, contacts with a horizontal surface H and supports the tread ring 2 so that a ring axis A2 is oriented in a direction perpendicular to the horizontal surface H.
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公开(公告)号：US10406861B2
公开(公告)日：2019-09-10
申请号：US15331529
申请日：2016-10-21
发明人： Wako Iwamura , Makoto Sugiya
摘要： An airless tire includes a tread ring including an elastic body and having a cylindrical form and a ground contact surface, a hub including a substantially non-extensible material and positioned on a tire radial direction inner side of the tread ring such that the hub is fixed to an axle, and multiple spokes including an elastic material and connecting the tread ring and the hub. Each of the spokes has an outer edge fixed to the tread ring and an inner edge fixed to the hub such that the outer edge and the inner edge are extending obliquely with respect to a tire axial direction, and the spokes are formed such that the outer edge of each of the spokes has compression rigidity Sr which is greater than compression rigidity Sh of the inner edge of each of the spokes.
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公开(公告)号：US10189310B2
公开(公告)日：2019-01-29
申请号：US15332173
申请日：2016-10-24
发明人： Wako Iwamura , Makoto Sugiya , Katsumi Terakawa , Kazuyoshi Shiga
摘要： An airless tire includes a tread ring, a hub and a spoke. The tread ring includes a tread rubber layer, a first reinforcing cord layer on radial direction inner side of the tread layer, a second reinforcing cord layer on radial direction inner side of the first cord layer, and a shear rubber layer between the cord layers, the cord layers have array layers including reinforcing cords, and topping rubber portions covering the array layers, each topping portion has an inner portion adjacent to the shear layer, and an outer portion, and the topping portion(s) has the inner portion formed of a composition including a rubber component which includes a butadiene rubber in content rate of 10 to 100% by mass, an α, β-unsaturated carboxylic acid metal salt in amount of 10 to 80 parts by weight with respect to 100 parts by mass of the component, and a peroxide.
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公开(公告)号：US09962994B2
公开(公告)日：2018-05-08
申请号：US14889338
申请日：2014-05-13
发明人： Wako Iwamura , Makoto Sugiya
CPC分类号： B60C7/14 , B29D30/02 , B29D99/0032 , B60C7/12 , B60C7/18 , B60C2007/005 , B60C2007/146
摘要： The present invention increases the bonding strength between a spoke and a tread ring and/or between a spoke and a hub to improve durability. An airless tire provided with a tread ring, a hub, and a spoke, wherein the spoke is integrally provided with: an outer annular portion of which the outer peripheral surface is bonded to the inner peripheral surface of the tread ring via a first adhesion layer; an inner annular portion of which the inner peripheral surface is bonded to the outer peripheral surface of the hub via a second adhesion layer, and a spoke portion which couples the inner and outer annular portions. The inner peripheral surface of the tread ring and/or the outer peripheral surface of the hub is composed of a roughened surface having a surface roughness (Ra) (arithmetic average roughness) of 3-1000 μm or a surface roughness (Rz) (ten-point average roughness) of 30-5000 μm.
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