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1. 发明授权

US07947635B2 Hydrodynamic bearing device and spindle motor using the same 有权
标题翻译：流体动力轴承装置和主轴电机使用相同
公开(公告)号：US07947635B2
公开(公告)日：2011-05-24
申请号：US12534914
申请日：2009-08-04
申请人： Katsushi Hirata , Takanori Shiraishi , Hideaki Ohno
发明人： Katsushi Hirata , Takanori Shiraishi , Hideaki Ohno
IPC分类号： C10M105/38 , C10M169/04 , F16C32/06
CPC分类号： C10M105/38 , C10M2207/283 , C10N2240/02 , F16C17/107 , F16C33/109 , F16C2370/12
摘要： A hydrodynamic bearing device being low in torque, low in power consumption, high in reliability and best suited for miniaturization and a spindle motor using the same.The hydrodynamic bearing device in accordance with the present invention, dynamic pressure generation grooves being provided on at least one of a shaft or a sleeve, and a lubricant being present in a clearance where the above-mentioned shaft and the above-mentioned sleeve are opposed to each other, is characterized in that the above-mentioned lubricant contains diesters obtained from a divalent alcohol having 4 to 8 carbon atoms and having no alkyl side chain at the β position and one or more kinds of saturated monovalent fatty acids having 9 to 13 carbon atoms.
摘要翻译：一种流体动力轴承装置，扭矩低，功率消耗低，可靠性高，最适合小型化，而使用该液力轴承装置的主轴电机。根据本发明的流体动力轴承装置，在上述轴和上述套筒相对的间隙中存在的动力压力产生槽设置在轴或套筒中的至少一个上，以及润滑剂其特征在于，上述润滑剂含有由具有4〜8个碳原子的二元醇得到的二酯，并且在“bgr”没有烷基侧链; 位置和一种或多种具有9至13个碳原子的饱和一价脂肪酸。

2. 发明申请

US20100035773A1 LUBRICATING OIL COMPOSITION FOR HYDRODYNAMIC BEARING DEVICE AND HYDRODYNAMIC BEARING DEVICE USING SAME 审中-公开
标题翻译：用于水动力轴承装置的润滑油组合物和使用其的水动力轴承装置
公开(公告)号：US20100035773A1
公开(公告)日：2010-02-11
申请号：US12536813
申请日：2009-08-06
申请人： Katsushi HIRATA , Takanori Shiraishi
发明人： Katsushi HIRATA , Takanori Shiraishi
IPC分类号： F16C32/06 , C10M135/10 , C07C309/00
CPC分类号： C10M169/04 , C10M135/10 , C10M2207/2835 , C10M2215/064 , C10M2219/044 , C10N2230/06 , C10N2240/02 , F16C17/107 , F16C2370/12 , C10N2210/02
摘要： The aim of the present invention is to provide a lubricating oil composition for a hydrodynamic bearing device wherein oil film disruption is suppressed. It is solved by a lubricating oil composition for a hydrodynamic bearing device which comprises a base oil and an oil film disruption inhibitor such as metal sulfonate.
摘要翻译：本发明的目的是提供一种用于流体动力轴承装置的润滑油组合物，其中油膜破裂被抑制。通过含有基础油和油膜破坏抑制剂如金属磺酸盐的流体动力轴承装置用润滑油组合物来解决。

3. 发明申请

US20090290821A1 HYDRODYNAMIC BEARING DEVICE AND SPINDLE MOTOR USING THE SAME 有权
标题翻译：使用相同的水动力轴承装置和主轴电机
公开(公告)号：US20090290821A1
公开(公告)日：2009-11-26
申请号：US12534914
申请日：2009-08-04
申请人： Katsushi HIRATA , Takanori SHIRAISHI , Hideaki OHNO
发明人： Katsushi HIRATA , Takanori SHIRAISHI , Hideaki OHNO
IPC分类号： F16C32/06
CPC分类号： C10M105/38 , C10M2207/283 , C10N2240/02 , F16C17/107 , F16C33/109 , F16C2370/12
摘要： A hydrodynamic bearing device being low in torque, low in power consumption, high in reliability and best suited for miniaturization and a spindle motor using the same.The hydrodynamic bearing device in accordance with the present invention, dynamic pressure generation grooves being provided on at least one of a shaft or a sleeve, and a lubricant being present in a clearance where the above-mentioned shaft and the above-mentioned sleeve are opposed to each other, is characterized in that the above-mentioned lubricant contains diesters obtained from a divalent alcohol having 4 to 8 carbon atoms and having no alkyl side chain at the β position and one or more kinds of saturated monovalent fatty acids having 9 to 13 carbon atoms.
摘要翻译：一种流体动力轴承装置，扭矩低，功率消耗低，可靠性高，最适合小型化，而使用该液力轴承装置的主轴电机。根据本发明的流体动力轴承装置，在上述轴和上述套筒相对的间隙中存在的动力压力产生槽设置在轴或套筒中的至少一个上，以及润滑剂其特征在于，上述润滑剂含有由具有4〜8个碳原子的二元醇得到的二酯，并且在β位没有烷基侧链，还有一种或多种饱和一价脂肪酸具有9〜13个碳原子。

4. 发明申请

US20080107367A1 Hydrodynamic bearing device, and spindle motor and information device using the same 有权
标题翻译：流体动力轴承装置，主轴电机和信息装置使用相同
公开(公告)号：US20080107367A1
公开(公告)日：2008-05-08
申请号：US11806930
申请日：2007-06-05
申请人： Katsushi Hirata , Takanori Shiraishi
发明人： Katsushi Hirata , Takanori Shiraishi
IPC分类号： F16C32/06
CPC分类号： F16C17/107 , C10M105/38 , C10M107/34 , C10M2207/026 , C10M2207/2835 , C10M2209/1055 , C10M2209/1065 , C10N2220/00 , C10N2220/022 , C10N2220/023 , C10N2230/02 , C10N2240/204 , F16C33/109 , C10M2209/1075 , C10M2209/1095
摘要： A hydrodynamic bearing device, comprising a shaft structure, a sleeve, a dynamic pressure-generating groove which is formed on surface of at least one of a shaft structure and a sleeve, and a lubricant present in a gap between the shaft structure and the sleeve; wherein the lubricant contains a diester with a total carbon number of 20 to 28 obtainable by a divalent alcohol that has three ether bond, and one or more types of a saturated monovalent fatty acid with carbon number of 6 to 10.
摘要翻译：一种流体动力轴承装置，包括轴结构，套筒，形成在轴结构和套筒中的至少一个的表面上的动压产生槽，以及存在于轴结构和套筒之间的间隙中的润滑剂 ; 其中所述润滑剂含有通过具有三个醚键的二价醇得到的总碳数为20〜28的二酯和碳数为6〜10的一种以上的饱和一价脂肪酸。

5. 发明申请

US20060171613A1 Hydrodynamic bearing device, and spindle motor and information device using the same 失效
标题翻译：流体动力轴承装置，主轴电机和信息装置使用相同
公开(公告)号：US20060171613A1
公开(公告)日：2006-08-03
申请号：US11360509
申请日：2006-02-24
申请人： Takanori Shiraishi , Katsushi Hirata , Hideaki Ohno
发明人： Takanori Shiraishi , Katsushi Hirata , Hideaki Ohno
IPC分类号： C10M107/34 , F16C33/00
CPC分类号： F16C17/107 , C10M105/18 , C10M169/04 , C10M2207/0406 , C10M2207/289 , C10N2220/022 , C10N2230/02 , C10N2240/204 , F16C17/026 , F16C33/109
摘要： A hydrodynamic bearing device comprises at least one of a rotating component and a fixed component having a dynamic pressure-generating mechanism, and a lubricant present in a gap between the rotating component and the fixed component; wherein the lubricant contains at least one compound selected from the group consisting of aliphatic ethers having one or more ether bonds and a total carbon number of 24 to 39.
摘要翻译：流体动力轴承装置包括具有动压力发生机构的旋转部件和固定部件中的至少一个以及存在于旋转部件和固定部件之间的间隙中的润滑剂; 其中所述润滑剂含有至少一种选自具有一个或多个醚键的脂族醚和总碳数为24至39的化合物。

6. 发明申请

US20060045397A1 Hydrodynamic bearing device, and spindle motor and magnetic disk device using the same 审中-公开
标题翻译：流体动力轴承装置，主轴电机和磁盘装置使用相同
公开(公告)号：US20060045397A1
公开(公告)日：2006-03-02
申请号：US11211687
申请日：2005-08-26
申请人： Katsushi Hirata , Hideaki Ohno , Takanori Shiraishi
发明人： Katsushi Hirata , Hideaki Ohno , Takanori Shiraishi
IPC分类号： F16C32/06 , C10M129/16
CPC分类号： F16C17/107 , C10M105/18 , C10M2207/0406 , C10N2240/204 , F16C33/109 , F16C2370/12
摘要： The invention provides a hydrodynamic bearing device, comprising at least one of a shaft and a sleeve having a dynamic pressure-generating mechanism, and a lubricant present in a gap between the shaft and the sleeve; wherein the lubricant contains at least one compound selected from the group consisting of aliphatic ethers having a total carbon number of 24 to 32 as represented in Formula (1) or Formula (2) R1—O—R2 (1) R3—O-A-O—R4 (2) and wherein R1 represents a C16 or higher alkyl group having at least one side-chain, R2 represents a C4 or higher alkyl group, the carbon number of R1 is greater than the carbon number of R2, R3 and R4 represent C8 or higher alkyl groups, A represents a C5 or higher CnH2n group, and at least one of R3, R4, and A have a branched structure.
摘要翻译：本发明提供了一种流体动力轴承装置，包括具有动压力发生机构的轴和套筒中的至少一个以及存在于轴和套筒之间的间隙中的润滑剂; 其中所述润滑剂含有至少一种选自由式（1）或式（2）表示的总碳数为24至32的脂族醚的化合物<？在线配方说明=“在线公式“end =”lead“？> R＆lt; 1＆lt; 2＆gt;（1）<？in-line-formula description =”In-line Formulas“end =”tail “？> <？in-line-formula description =”In-line Formulas“end =”lead“？> R <3> -line-formula description =“In-line Formulas”end =“tail”？>并且其中R 1表示具有至少一个侧链的C 16或更高级烷基，R 2 表示C4或更高级的烷基，R 1的碳数大于R 2，R 3，O 3的碳原子数 >和R 4代表C 8或更高级烷基，A代表C5或更高级的C n H 2n - ，并且R S 4，R 4，A具有支链结构。

7. 发明申请

US20100105581A1 LUBRICATING OIL COMPOSITION CONTAINING IONIC LIQUID 审中-公开
标题翻译：含有液体的润滑油组合物
公开(公告)号：US20100105581A1
公开(公告)日：2010-04-29
申请号：US12605549
申请日：2009-10-26
申请人： Takanori Shiraishi , Katsushi Hirata
发明人： Takanori Shiraishi , Katsushi Hirata
IPC分类号： F16C33/00 , C10M169/04 , C10M135/18
CPC分类号： F16C33/109 , C10M169/04 , C10M2215/224 , C10M2215/2245 , C10M2219/066 , C10M2219/068 , C10N2220/021 , C10N2220/022 , C10N2220/04 , C10N2230/02 , C10N2230/74 , C10N2240/02 , C10N2240/204 , C10N2210/01
摘要： The problem to be solved by the present invention is to provide an ionic liquid-containing lubricating oil composition that has extremely low viscosity and does not evaporate during use.This problem is solved through the use of a lubricating oil composition that contains as a base oil an ionic liquid with a kinematic viscosity of 5-20 mm2/s at 40° C., and a polymerization inhibitor with a molecular weight of 200-600.
摘要翻译：本发明要解决的问题是提供一种具有极低粘度并且在使用过程中不蒸发的含离子液体的润滑油组合物。该问题通过使用在40℃下含有运动粘度为5-20mm 2 / s的离子液体作为基础油的润滑油组合物得到解决，分子量为200-600的阻聚剂。

8. 发明申请

US20050282713A1 Hydrodynamic bearing device and spindle motor using the same 审中-公开
标题翻译：流体动力轴承装置和主轴电机使用相同
公开(公告)号：US20050282713A1
公开(公告)日：2005-12-22
申请号：US11092186
申请日：2005-03-29
申请人： Katsushi Hirata , Takanori Shiraishi , Hideaki Ohno
发明人： Katsushi Hirata , Takanori Shiraishi , Hideaki Ohno
IPC分类号： C10M105/32 , C10M105/38 , C10N40/02 , F16C17/10 , F16C32/06 , F16C33/10 , H02K5/167 , C10M15/38
CPC分类号： C10M105/38 , C10M2207/283 , C10N2240/02 , F16C17/107 , F16C33/109 , F16C2370/12
摘要： A hydrodynamic bearing device being low in torque, low in power consumption, high in reliability and best suited for miniaturization and a spindle motor using the same. The hydrodynamic bearing device in accordance with the present invention, dynamic pressure generation grooves being provided on at least one of a shaft or a sleeve, and a lubricant being present in a clearance where the above-mentioned shaft and the above-mentioned sleeve are opposed to each other, is characterized in that the above-mentioned lubricant contains diesters obtained from a divalent alcohol having 4 to 8 carbon atoms and having no alkyl side chain at the β position and one or more kinds of saturated monovalent fatty acids having 9 to 13 carbon atoms.
摘要翻译：一种流体动力轴承装置，扭矩低，功率消耗低，可靠性高，最适合小型化，而使用该液力轴承装置的主轴电机。根据本发明的流体动力轴承装置，在上述轴和上述套筒相对的间隙中存在的动力压力产生槽设置在轴或套筒中的至少一个上，以及润滑剂其特征在于，上述润滑剂含有由具有4〜8个碳原子的二元醇得到的二酯，并且在β位没有烷基侧链，还有一种或多种饱和一价脂肪酸具有9〜13个碳原子。

9. 发明授权

US06685356B2 Liquid bearing unit and magnetic disk device using the same 有权
标题翻译：液体轴承单元和使用其的磁盘装置
公开(公告)号：US06685356B2
公开(公告)日：2004-02-03
申请号：US10115437
申请日：2002-04-04
申请人： Katsushi Hirata
发明人： Katsushi Hirata
IPC分类号： F16C3206
CPC分类号： F16C33/109 , C10M105/38 , C10M107/38 , C10M2207/281 , C10M2207/282 , C10M2207/283 , C10M2207/286 , C10M2211/06 , C10M2213/02 , C10M2213/062 , C10N2240/20 , C10N2240/201 , C10N2240/202 , C10N2240/203 , C10N2240/204 , C10N2240/205 , F16C17/026 , F16C2370/12 , H02K5/1677
摘要： A highly reliable liquid bearing unit is provided, which can, by securely repelling a lubricant by an oil repelling film, prevent the lubricant from leaking and a magnetic disk device mounted therewith. In a case where the lubricant contains a constituent of at least one of a hydrocarbon-based oil and an ester-based oil and the oil repellent film is a film of at least one of a fluorine base and a silicone base, surface tension of the lubricant is made greater than the critical surface tension of the oil repellent film by 5 mN/m or more. Moreover, when the lubricant is a fluorine-based lubricant, surface tension of the lubricant is made greater than the critical surface tension of the oil repellent film by 8 mN/m or more.
摘要翻译：提供了一种高度可靠的液体轴承单元，其可以通过由排斥膜可靠地排斥润滑剂来防止润滑剂泄漏，并且安装有磁盘装置。在润滑剂含有烃系油和酯系油中的至少一种的成分的情况下，斥油膜为氟基和硅氧烷基中的至少一种的膜，表面张力为使润滑剂大于斥油膜的临界表面张力5mN / m以上。此外，当润滑剂为氟系润滑剂时，润滑剂的表面张力比拒油膜的临界表面张力大8mN / m以上。

10. 发明授权

US07781383B2 Lubricant for fluid dynamic bearing, spindle motor equipped therewith and magnetic disk unit 有权
标题翻译：用于流体动力轴承的润滑剂，配备的主轴电机和磁盘单元
公开(公告)号：US07781383B2
公开(公告)日：2010-08-24
申请号：US11400197
申请日：2006-04-10
申请人： Takanori Shiraishi , Hideaki Ohno , Katsushi Hirata
发明人： Takanori Shiraishi , Hideaki Ohno , Katsushi Hirata
IPC分类号： C07D233/14 , C10M135/06
CPC分类号： C10M141/06 , C10M169/04 , C10M2203/065 , C10M2205/0206 , C10M2207/0406 , C10M2207/16 , C10M2207/2805 , C10M2215/04 , C10M2215/224 , C10N2220/02 , C10N2230/06 , C10N2230/74 , C10N2240/02 , C10N2240/204
摘要： A lubricant, comprising: a base oil as primary lubricant component, and a naphthenate salt as additive (A), and an alkylimidazole compound as additive (B), added to the base oil, preferably further comprising an aliphatic amine compound as additive (C), a fluid dynamic bearing with the lubricant filled therein, a spindle motor with the fluid dynamic bearing installed therein, and a magnetic disk device with the spindle motor installed therein.
摘要翻译：一种润滑剂，其包含：作为主要润滑剂成分的基础油和作为添加剂（A）的环烷酸盐和作为添加剂的烷基咪唑化合物（B），添加到所述基础油中，优选还含有脂肪族胺化合物作为添加剂（C ），其中填充润滑剂的流体动力轴承，安装有流体动力轴承的主轴电机以及安装有主轴电机的磁盘装置。

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