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公开(公告)号：US06328477B1
公开(公告)日：2001-12-11
申请号：US09448941
申请日：1999-11-24
申请人： Takashi Tsujimoto , Yuji Okamoto , Kikuo Maeda
发明人： Takashi Tsujimoto , Yuji Okamoto , Kikuo Maeda
IPC分类号： F16C3346
CPC分类号： F16C19/364 , B60K17/16 , F16C19/225 , F16C33/30 , F16C33/366 , F16C33/585 , F16C33/62 , F16C2240/40 , F16C2240/50 , F16C2240/54 , F16C2240/70 , F16C2361/61 , F16H48/08 , F16H57/037
摘要： A tapered roller bearing and an automotive gear shaft support device which can ensure a long endurance life even in the state in which debris is mixed. On the surfaces of an outer ring, inner ring, and tapered rollers formed from carburized bearing steel having an oxygen content of 9 ppm or less, carbo-nitrided layers having a carbon content of 0.80 wt % or over, a Rockwell hardness HRC of 58 or over, and a residual austenite content of 25-35 vol % are formed to increase mechanical properties and fatigue characteristics of the parts and to stably maintain the carbo-nitrided layers on the surfaces of the parts to a quality having suitable toughness, thereby markedly improving the endurance life of the tapered roller bearing in a state in which debris mixed.
摘要翻译： 圆锥滚子轴承和汽车齿轮轴支撑装置，即使在混合碎屑的状态下也能够确保长寿命的寿命。 在由氧含量为9ppm以下的渗碳轴承钢形成的外圈，内圈和圆锥滚子的表面上，碳含量为0.80重量％以上的碳氮化层，洛氏硬度HRC为58 形成25-35％（体积）的残余奥氏体含量以增加部件的机械性能和疲劳特性，并将部件表面上的碳氮化层稳定地维持在具有合适韧性的质量上，从而显着地 提高圆锥滚子轴承在碎片混合状态下的耐用寿命。
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公开(公告)号：US07090405B2
公开(公告)日：2006-08-15
申请号：US10649764
申请日：2003-08-28
申请人： Takashi Tsujimoto , Yuji Okamoto , Kikuo Maeda
发明人： Takashi Tsujimoto , Yuji Okamoto , Kikuo Maeda
IPC分类号： F16C33/58
CPC分类号： F16C19/364 , B60K17/16 , F16C19/225 , F16C33/30 , F16C33/366 , F16C33/585 , F16C33/62 , F16C2240/40 , F16C2240/50 , F16C2240/54 , F16C2240/70 , F16C2361/61 , F16H48/08 , F16H57/037
摘要： A tapered roller bearing and an automotive gear shaft support device can ensure a long endurance life even in the state in which debris is mixed. On the surfaces of an outer ring, inner ring, and tapered rollers formed from carburized bearing steel having an oxygen content of 9 ppm or less, carbo-nitrided layers having a carbon content of 0.80 wt % or over, a Rockwell hardness HRC of 58 or over, and a residual austenite content of 25–35 vol % are formed to increase mechanical properties and fatigue characteristics of the parts and to stably maintain the carbo-nitrided layers on the surfaces of the parts to a quality having suitable toughness, thereby markedly improving the endurance life of the tapered roller bearing in a state in which debris is mixed.
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公开(公告)号：US06447168B2
公开(公告)日：2002-09-10
申请号：US09886378
申请日：2001-06-22
申请人： Takashi Tsujimoto , Yuji Okamoto , Kikuo Maeda
发明人： Takashi Tsujimoto , Yuji Okamoto , Kikuo Maeda
IPC分类号： F16C3358
CPC分类号： F16C19/364 , B60K17/16 , F16C19/225 , F16C33/30 , F16C33/366 , F16C33/585 , F16C33/62 , F16C2240/40 , F16C2240/50 , F16C2240/54 , F16C2240/70 , F16C2361/61 , F16H48/08 , F16H57/037
摘要： A tapered roller bearing and an automotive gear shaft support device can ensure a long endurance life even in the state in which debris is mixed. On the surfaces of an outer ring, inner ring, and tapered rollers formed from carburized bearing steel having an oxygen content of 9 ppm or less, carbo-nitrided layers having a carbon content of 0.80 wt % or over, a Rockwell hardness HRC of 58 or over, and a residual austenite content of 25-35 vol % are formed to increase mechanical properties and fatigue characteristics of the parts and to stably maintain the carbo-nitrided layers on the surfaces of the parts to a quality having suitable toughness, thereby markedly improving the endurance life of the tapered roller bearing in a state in which debris is mixed.
摘要翻译： 圆锥滚子轴承和汽车齿轮轴支撑装置即使在混合碎片的状态下也能确保长时间的使用寿命。 在由氧含量为9ppm以下的渗碳轴承钢形成的外圈，内圈和圆锥滚子的表面上，碳含量为0.80重量％以上的碳氮化层，洛氏硬度HRC为58 形成25-35％（体积）的残余奥氏体含量以增加部件的机械性能和疲劳特性，并将部件表面上的碳氮化层稳定地维持在具有合适韧性的质量上，从而显着地 提高了在混合碎片的状态下的圆锥滚子轴承的耐用寿命。
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公开(公告)号：US09074621B2
公开(公告)日：2015-07-07
申请号：US11628750
申请日：2005-06-16
申请人： Takashi Tsujimoto , Rino Fukami
发明人： Takashi Tsujimoto , Rino Fukami
CPC分类号： F16C19/26 , F16C19/364 , F16C33/34 , F16C2240/54
摘要： The surfaces (2a) of at least rolling elements (2) of a roller bearing for transmissions or differentials of automobiles are provided with innumerable minute, recess-shaped cavities at random and the surface roughness parameter Ryni of the surfaces provided with the cavities is in the range of 0.4-1.0 μm and the Sk value is not more than −1.6.
摘要翻译： 至少滚动轴承的滚动元件（2）的表面（2），用于汽车的变速器或差速器，随机地设置有无数的微小的凹形空腔，并且设置有空腔的表面的表面粗糙度参数Ryni处于 0.4-1.0μm的范围和Sk值不大于-1.6。
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公开(公告)号：US08226300B2
公开(公告)日：2012-07-24
申请号：US12663571
申请日：2008-05-29
CPC分类号： F16D23/06 , F16C19/386 , F16C33/4635 , F16C33/6696 , F16C2240/40 , F16C2240/84 , F16C2361/43 , F16C2361/61 , F16D15/00 , F16D41/061 , F16D2300/10
摘要： A tapered roller bearing is capable of suppressing the occurrence of fretting without shortening its fatigue life. The tapered roller bearing includes an outer race, an inner race, a plurality of taper rollers interposed between the outer race and the inner race, and a retainer for retaining the tapered rollers. The tapered roller bearing is used in an idler portion of an automobile transmission, which is interchanged between an idle state in which the outer race idles with respect to the inner race and a shift state in which the outer race and the inner race are rotated synchronously with each other. A ratio of α/β≧4.9 is established on a premise that an outer-race raceway surface angle is 2α and a roller angle is β.
摘要翻译： 圆锥滚子轴承能够抑制疲劳的发生而不会缩短其疲劳寿命。 圆锥滚子轴承包括外圈，内圈，插入在外座圈和内座圈之间的多个锥形辊，以及用于保持圆锥滚子的保持器。 圆锥滚子轴承用于汽车变速器的惰轮部分，其在外圈相对于内圈空转的空转状态和外座圈和内座圈同步旋转的换档状态之间互换 与彼此。 在外圈轨道面角度为2°，滚轮角度为＆bgr的前提下确定α/＆bgr;≧4.9的比率。
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公开(公告)号：US20060177167A1
公开(公告)日：2006-08-10
申请号：US11330247
申请日：2006-01-12
申请人： Takashi Tsujimoto
发明人： Takashi Tsujimoto
IPC分类号： F16C33/76
CPC分类号： F16C33/7896 , F16C19/06 , F16C33/7856 , F16C33/7889
摘要： A sealed rolling bearing includes an inner ring and an outer ring defining a bearing space therebetween. Axially inner and outer contact seals are provided on each side of the bearing space to seal the bearing space. The axially outer contact seals stop any splashed muddy water, thereby keeping the lips of the axially inner contact seals and their sliding contact surfaces free of muddy water. This prevents the lips of the axially inner contact seals and their sliding contact surfaces from becoming worn by muddy water. The axially inner contact seals thus maintain high sealability even if the bearing is used in environments where muddy water splashes.
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公开(公告)号：US08123414B2
公开(公告)日：2012-02-28
申请号：US11212908
申请日：2005-08-29
申请人： Takashi Tsujimoto
发明人： Takashi Tsujimoto
CPC分类号： F16C33/4676 , F16C19/364 , F16C33/366 , F16C33/4635 , F16C33/543 , F16C2240/40 , F16C2240/84 , F16C2361/61
摘要： A tapered roller bearing 1 comprises an inner ring 2, an outer ring 3, a plurality of tapered rollers 4 rollably disposed between the inner and outer rings 2 and 3, and a cage 5 for holding the tapered rollers 4 in predetermined circumferentially spaced relation, wherein the roller coefficient exceeds 0.94, and with the cage 4 positioned at the axial center, there is a clearance between the cage and the raceway surface of the outer ring, and the roller abutting width of the pocket pole surface is secured across 10% or more of the pocket length axially from the central position of the pocket.
摘要翻译： 圆锥滚子轴承1包括内圈2，外圈3，可旋转地设置在内圈和外圈2,3之间的多个圆锥滚子4和用于将圆锥滚子4保持在预定的周向间隔关系上的保持架5， 其中滚子系数超过0.94，并且保持架4位于轴向中心处，保持架和外圈的滚道表面之间存在间隙，并且袋极表面的辊对接宽度被固定在10％或 更多的口袋长度从口袋的中心位置轴向。
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公开(公告)号：US07789570B2
公开(公告)日：2010-09-07
申请号：US10581338
申请日：2004-11-30
申请人： Takashi Tsujimoto
发明人： Takashi Tsujimoto
IPC分类号： F16C33/48
CPC分类号： F16C33/467 , F16C19/364 , F16C33/4635 , F16C2240/30 , F16C2240/40 , F16C2240/84 , F16C2361/61
摘要： A tapered roller bearing has an increased load capacity and has a decreased maximum face pressure on the raceway surfaces without lowering the rigidity of the cage. The tapered roller bearing includes an inner ring, an outer ring, multiple tapered rollers rollably disposed between the inner ring 2 and the outer ring 3, and a cage for holding the tapered rollers at predetermined circumferential intervals, wherein the roller coefficient γ thereof is larger than 0.94. Herein, γ=(the number of the rollers×the average diameter of the rollers)/(π×PCD).
摘要翻译： 圆锥滚子轴承具有增加的负载能力，并且在滚道表面上的最大面压降低，而不降低保持架的刚度。 圆锥滚子轴承包括内圈，外圈，可滚动地设置在内圈2和外圈3之间的多个圆锥滚子，以及用于以预定的周向间隔保持圆锥滚子的保持架，其中，辊系数γ较大 比0.94。 这里，γ=（辊数×辊的平均直径）/（＆pgr×PCD）。
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公开(公告)号：US20100016628A1
公开(公告)日：2010-01-21
申请号：US12439765
申请日：2007-03-08
申请人： Hiroshi Uyama , Yinan Yin , Takashi Tsujimoto , Hideo Noda , Takahiko Terada
发明人： Hiroshi Uyama , Yinan Yin , Takashi Tsujimoto , Hideo Noda , Takahiko Terada
IPC分类号： C07C69/66
CPC分类号： C08G18/428 , C08G18/4288 , C08G63/08 , C08G63/78 , C08G2101/0025 , C08G2101/0083 , C08G2230/00
摘要： A star-branched polyester polyol is obtained by polymerizing lactide or lactic acid, using, as an initiator, a fat and oil composed mainly of a triacylglycerol that has at least three hydroxyl groups or epoxy groups in its molecule. This polyester polyol has low crystallinity and a low melting point, and thus shows good working properties when used in various applications. Furthermore, this polyester polyol is derived from renewable resources, and, thus, it is highly desirable in view of its effectiveness in protecting the global environment and preventing fossil resources from being depleted.
摘要翻译： 以分支中具有至少三个羟基或环氧基的主要由三酰基甘油组成的脂肪和油作为引发剂，聚合丙交酯或乳酸得到星形支链聚酯多元醇。 该聚酯多元醇具有低结晶度和低熔点，因此当用于各种应用时显示出良好的加工性能。 此外，该聚酯多元醇来自可再生资源，因此鉴于其在保护全球环境和防止化石资源枯竭方面的有效性是非常需要的。
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公开(公告)号：US20090324155A1
公开(公告)日：2009-12-31
申请号：US11249740
申请日：2005-10-14
IPC分类号： F16C33/58
CPC分类号： F16C19/364 , F16C19/225 , F16C33/366 , F16C33/62 , F16C2240/50 , F16C2240/70 , F16C2361/61
摘要： A tapered roller bearing comprises an inner ring having a conical surface-like raceway surface in it outer periphery and formed with a cone back face rib and a cone front face rib on the opposite sides of the raceway, an outer ring having a conical surface-like raceway in its inner periphery, a plurality of tapered rollers interposed between the raceways of the inner and outer rings, and a cage for holding the tapered rollers in predetermined circumferential intervals, wherein the ratio R/RBASE of the radius of curvature R of the large end face (32) of the tapered roller (30) to the distance RBASE from the apex of cone of the tapered roller (30) to the cone back face rib surface (18) of the inner ring (10) is set at 0.75 to 0.87, and the end face deflection of the large end face (32) of the tapered roller (30) is 3 μm or less.
摘要翻译： 圆锥滚子轴承包括在其外周具有锥形表面状的滚道表面的内圈，并且在滚道的相对侧上形成有锥形背面肋和锥形前面肋，外圈具有锥形表面 - 内圈和内圈的滚道之间插入有多个圆锥滚子，以及用于以预定的周向间隔保持圆锥滚子的保持架，其中，R / 圆锥滚子（30）的大端面（32）与从圆锥滚子（30）的锥形顶点到内圈（10）的锥形背面肋表面（18）的距离RBASE设定为0.75 至0.87°，圆锥滚子（30）的大端面（32）的端面偏转为3μm以下。
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