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1. 发明授权

US5333079A Low profile hard disk apparatus 失效
标题翻译：低调硬盘设备
公开(公告)号：US5333079A
公开(公告)日：1994-07-26
申请号：US920776
申请日：1992-07-28
申请人： Kiyoyoshi Takegami , Itsuo Miyaji , Hiroyuki Yonei , Kihachiro Ohta
发明人： Kiyoyoshi Takegami , Itsuo Miyaji , Hiroyuki Yonei , Kihachiro Ohta
IPC分类号： G11B19/20 , G11B25/04 , G11B33/12 , G11B33/14 , G11B17/02
CPC分类号： G11B33/121 , G11B19/2009 , G11B25/043 , G11B33/148 , G11B33/1486
摘要： An annular recess is formed in a base which constitutes a disk chamber, and an armature constituting a spindle motor for driving a hard disk and composed of a stator core and a stator coil and a field device composed of a rotor yoke and a rotor magnet are substantially accommodated in the annular recess. As a result, the height of a portion of a hard disk apparatus which constitutes a radial directional gap type spindle motor can be minimized and therefore the overall height of the apparatus can be minimized. Hence, the thickness and the size of a computer apparatus or the like which includes the hard disk apparatus can be reduced.
摘要翻译：在构成盘室的基座中形成有环状凹部，构成用于驱动硬盘并由定子铁心和定子线圈构成的主轴电机的电枢以及由转子磁轭和转子磁铁构成的励磁装置，基本上容纳在环形凹部中。结果，构成径向定向间隙型主轴电动机的硬盘装置的一部分的高度可以最小化，因此可以最小化装置的整体高度。因此，可以减少包括硬盘装置的计算机装置等的厚度和尺寸。

2. 发明授权

US5453890A Low airflow hard disk apparatus 失效
标题翻译：低气流硬盘设备
公开(公告)号：US5453890A
公开(公告)日：1995-09-26
申请号：US208346
申请日：1994-03-09
申请人： Kiyoyoshi Takegami , Yoichi Mori , Hirotada Itoi , Itsuo Miyaji , Hiroyuki Yonei , Kihachiro Ohta
发明人： Kiyoyoshi Takegami , Yoichi Mori , Hirotada Itoi , Itsuo Miyaji , Hiroyuki Yonei , Kihachiro Ohta
IPC分类号： G11B19/20 , G11B25/04 , G11B33/12 , G11B33/14 , G11B17/02
CPC分类号： G11B33/121 , G11B19/2009 , G11B25/043 , G11B33/148 , G11B33/1486
摘要： A low airflow hard disk apparatus comprises a base, a cover member, a rotational portion disposed in a disk chamber, a hard disk held by and rotatable with the rotational portion, a first projection portion disposed on the lower surface of the cover member and facing toward the upper surface of the hard disk, and a second projection portion disposed on the upper surface of the base and facing toward the lower surface of the hard disk. The first and second projection portions, preferably radially extending fins, prevent an air flow from generating by the rotation of the hard disk.
摘要翻译：低气流硬盘装置包括基座，盖构件，设置在盘室中的旋转部分，由旋转部分保持并可旋转的硬盘;第一突出部分，设置在盖构件的下表面上并面对朝向硬盘的上表面，以及设置在基座的上表面上并朝向硬盘的下表面的第二突出部分。第一和第二突出部分，优选径向延伸的翅片，防止空气流通过硬盘的旋转产生。

3. 发明授权

US5334895A Spindle motor with the stator core supported by a resin member 失效
标题翻译：主轴电机，定子芯由树脂构件支撑
公开(公告)号：US5334895A
公开(公告)日：1994-08-02
申请号：US853121
申请日：1992-03-18
申请人： Yuji Morioka , Masanobu Chuta , Kuniyasu Iwazaki , Kihachiro Ohta
发明人： Yuji Morioka , Masanobu Chuta , Kuniyasu Iwazaki , Kihachiro Ohta
IPC分类号： F16J15/43 , G11B19/20 , H02K1/18 , H02K5/124 , H02K5/173 , H02K7/14 , H02K11/00 , H02K5/00
CPC分类号： F16J15/43 , F16C33/58 , G11B19/2009 , H02K1/187 , H02K11/01 , H02K5/124 , H02K5/1737 , H02K7/14 , F16C19/06
摘要： A spindle motor having a housing, a hub member rotatable relative to the housing, a bearing disposed between the housing and the hub member, a rotor magnet mounted on the hub member, and a stator disposed in a facing relationship with the rotor magnet. The hub member includes a supporting wall portion, which cooperates with the stator to constitute an air seal structure. A magnetic fluid seal is provided at a position outward of the bearing, and includes a conductive plate for grounding static electricity. The bearing is comprised of a radial ball bearing, which includes certain improvement.
摘要翻译：一种主轴电动机，具有壳体，可相对于壳体旋转的毂构件，设置在壳体和轮毂构件之间的轴承，安装在轮毂构件上的转子磁体和以与转子磁体成对置关系的定子。毂构件包括与定子协作以构成空气密封结构的支撑壁部分。磁性流体密封件设置在轴承外侧的位置处，并且包括用于接地静电的导电板。轴承由径向球轴承组成，其包括某些改进。

4. 发明授权

US5521349A Projection welding method 失效
标题翻译：投影焊接方法
公开(公告)号：US5521349A
公开(公告)日：1996-05-28
申请号：US223868
申请日：1994-04-06
申请人： Kenjiro Okamoto , Kuniyasu Iwazaki , Kihachiro Ohta
发明人： Kenjiro Okamoto , Kuniyasu Iwazaki , Kihachiro Ohta
IPC分类号： B23K11/14 , H02K15/02 , H02K15/14
CPC分类号： B23K11/14 , H02K15/02 , H02K15/14
摘要： A projection welding method which comprises providing in either one of a first member and a second member to be welded a plurality of projections projecting toward the other member, supplying a current between the first and second members to melt the plurality of projections, and welding the first and second members. The plurality of projections are composed of projections having a plurality of kinds with different heights. Furthermore, with reference to the plurality of projections, concave grooves in which a molten product flows are provided.
摘要翻译：一种投影焊接方法，其特征在于，在第一构件和第二构件中的任一个中设置要焊接的多个突起朝着另一构件突出的突起，在第一构件和第二构件之间提供电流以熔化多个突起，并且焊接第一和第二名成员。多个突起由具有不同高度的多种突起构成。此外，参照多个突起，设置熔融物流动的凹槽。

5. 发明授权

US5281886A Magnetic disk drive device and spindle motor for use in the same 失效
标题翻译：磁盘驱动装置和主轴电机用于同一个
公开(公告)号：US5281886A
公开(公告)日：1994-01-25
申请号：US963660
申请日：1992-10-20
申请人： Kihachiro Ohta
发明人： Kihachiro Ohta
IPC分类号： G11B17/038 , G11B19/20 , G11B25/04 , H02K5/124 , H02K7/14 , H02K7/08
CPC分类号： F16C33/765 , G11B17/038 , G11B19/2009 , G11B25/043 , H02K5/124 , H02K7/14 , F16C2370/12
摘要： A magnetic disk drive device has a spindle motor for rotatingly driving magnetic disks in a predetermined direction, and a clamp member for mounting the disks on the spindle motor. The spindle motor has a hub rotatably supported through bearings and having a portion for mounting the magnetic disks, a rotor magnet carried by the hub, a stator disposed to oppose to the rotor magnet, and magnetic fluid seal arrangement for preventing scattering of lubricant from the bearing means. The magnetic disk drive device further has a magnetic shield disposed on the radially outer side of the magnetic fluid seal arrangement. One of the bearings rotatably supporting the hub may be charged with a lubricant having a comparatively low viscosity, while the other bearing may be charged with a lubricant having a comparatively high viscosity.
摘要翻译：磁盘驱动装置具有用于沿预定方向旋转驱动磁盘的主轴电机和用于将磁盘安装在主轴电动机上的夹紧部件。主轴电动机具有通过轴承可旋转地支撑的毂，并且具有用于安装磁盘的部分，由轮毂承载的转子磁体，与转子磁体相对设置的定子，以及用于防止润滑剂从所述转子磁体散射的磁性流体密封装置轴承方式。磁盘驱动装置还具有设置在磁性流体密封装置的径向外侧上的磁屏蔽。可旋转地支撑轮毂的轴承之一可以加入具有较低粘度的润滑剂，而另一个轴承可以装有具有较高粘度的润滑剂。

6. 发明授权

US5396135A Motor 失效
标题翻译：发动机
公开(公告)号：US5396135A
公开(公告)日：1995-03-07
申请号：US208945
申请日：1994-03-10
申请人： Kuniyasu Iwazaki , Kihachiro Ohta
发明人： Kuniyasu Iwazaki , Kihachiro Ohta
IPC分类号： F16J15/43 , G11B19/20 , H02K1/18 , H02K5/124 , H02K5/173 , H02K7/14 , H02K11/00 , H02K5/16 , F16C19/00
CPC分类号： F16J15/43 , F16C33/58 , G11B19/2009 , H02K1/187 , H02K11/01 , H02K5/124 , H02K5/1737 , H02K7/14 , F16C19/06
摘要： A spindle motor having a housing, a hub member rotatable relative to the housing, a bearing means disposed between the housing and the hub member, a rotor magnet mounted on the hub member, and a stator disposed in a facing relationship with the rotor magnet. The hub member includes a supporting wall portion, which cooperates with the stator to constitute an air seal structure. A magnetic fluid seal means is provided at a position outward of the bearing means, and includes a conductive plate for grounding static electricity. The bearing means is comprised of a radial ball bearing, which includes certain improvement.
摘要翻译：一种主轴电动机，其具有壳体，可相对于所述壳体旋转的毂构件，设置在所述壳体和所述毂构件之间的轴承装置，安装在所述毂构件上的转子磁体以及与所述转子磁体成对置关系的定子。毂构件包括与定子协作以构成空气密封结构的支撑壁部分。磁性流体密封装置设置在轴承装置外侧的位置处，并且包括用于接地静电的导电板。轴承装置由径向球轴承组成，其包括某些改进。

7. 发明授权

US4608127A Dibenzofuran distillation and crystallization process 失效
标题翻译：二苯并呋喃蒸馏和结晶过程
公开(公告)号：US4608127A
公开(公告)日：1986-08-26
申请号：US741268
申请日：1985-05-28
申请人： Kiyoshi Sakuma , Tadao Tomioka , Sunao Tabuchi , Kihachiro Ohta , Masakazu Takeuchi
发明人： Kiyoshi Sakuma , Tadao Tomioka , Sunao Tabuchi , Kihachiro Ohta , Masakazu Takeuchi
IPC分类号： C07D307/91 , B01D3/00 , B01D9/00
CPC分类号： C07D307/91 , Y10S203/13
摘要： Separation and recovery of dibenzofuran of high purity is accomplished by distilling a coal tar fraction having boiling point range of 220.degree. to 300.degree. C. thereby producing a dibenzofuran fraction having a dibenzofuran content of not less than 30% by weight, a dibenzofuran/acenaphthene molar ratio of not less than 1.3, and a fluorene/dibenzofuran molar ratio of not more than 0.05, then introducing the dibenzofuran fraction obtained as described above into a continuous crystallization purification unit provided with a cooling zone for crystallization of the feed, a heating zone for melting the purified crystals, and a refining zone for enabling crystals being transferred from said cooling zone to said heating zone to come into counter current contact with a mass of molten crystals midway along the path between said two zones, and subjecting the dibenzofuran fraction to continuous crystallization purification therein.
摘要翻译：通过蒸馏沸点范围为220-300℃的煤焦油馏分来实现高纯度的二苯并呋喃的分离和回收，从而制备二苯并呋喃含量不小于30重量％的二苯并呋喃馏分，二苯并呋喃/苊摩尔比不小于1.3，芴/二苯并呋喃摩尔比不大于0.05，然后将如上所述获得的二苯并呋喃馏分引入具有用于进料结晶的冷却区的连续结晶纯化单元，加热区用于熔化纯化的晶体，以及精炼区，用于使晶体从所述冷却区转移到所述加热区，以沿着所述两个区之间的路径在中间与一批熔融晶体逆流接触，并将二苯并呋喃馏分连续结晶纯化。

8. 发明授权

US5528092A Spindle motor 失效
标题翻译：主轴电机
公开(公告)号：US5528092A
公开(公告)日：1996-06-18
申请号：US293737
申请日：1994-08-19
申请人： Kihachiro Ohta
发明人： Kihachiro Ohta
IPC分类号： G11B19/20 , H02K1/27 , H02K5/124 , H02K21/22 , H02K7/14 , H02K21/12
CPC分类号： G11B19/2009 , H02K1/2786 , H02K21/22 , H02K5/124
摘要： A spindle motor comprises a stationary member, a rotor rotatably mounted by bearing means to the stationary member for holding a recording disk, a rotor magnet mounted to the rotor, and an armature mounted to the stationary member to seat opposite to the rotor magnet. In particular, the rotor includes a shaft, a hub extending outwardly and radially of the shaft, and a flange provided circumferentially of the hub which are integrally formed from a metal plate by plastic deformation process.
摘要翻译：主轴电动机包括固定构件，通过轴承装置可旋转地安装到用于保持记录盘的固定构件的转子，安装到转子的转子磁体和安装到固定构件以与转子磁体相对地安置的电枢。特别地，转子包括轴，轴向外延伸并且径向径向设置的毂，以及通过塑性变形过程由金属板一体地形成的轮毂周向凸缘。

9. 发明授权

US5216304A Spindle motor with an improved hub 失效
标题翻译：主轴电机具有改进的集线器
公开(公告)号：US5216304A
公开(公告)日：1993-06-01
申请号：US780145
申请日：1991-10-21
申请人： Kihachiro Ohta
发明人： Kihachiro Ohta
IPC分类号： G11B19/20 , G11B25/04 , H02K5/10 , H02K7/14
CPC分类号： H02K5/10 , G11B19/20 , G11B25/043 , H02K7/14
摘要： A spindle motor has a stationary member, a hub rotatable relative to the hub, a stator mounted on the stationary member and a rotor magnet carried by the hub and facing the stator. The hub is provided with female-threaded holes for receiving screws for fixing a disk clamp member to the hub, and also with communication holes communicating with the female-threaded holes and opening to the exterior of the hub. The hub further has a seal member for sealing the openings of the communication holes. The hub is rotatably supported by the shaft member through a pair of bearings. The stator has a stator stack of a stack height or thickness greater than the spacing of the pair of bearings.
摘要翻译：主轴电动机具有固定构件，可相对于轮毂旋转的轮毂，安装在固定构件上的定子和由轮毂承载并面向定子的转子磁体。轮毂设置有用于接收用于将盘夹紧构件固定到轮毂的螺钉的内螺纹孔，并且还具有与内螺纹孔连通并且连通到轮毂外部的连通孔。轮毂还具有用于密封连通孔的开口的密封构件。毂通过一对轴承由轴构件可旋转地支撑。定子具有堆叠高度或厚度大于该对轴承间隔的定子叠层。

10. 发明授权

US5061868A Spindle motor 失效
标题翻译：主轴电机
公开(公告)号：US5061868A
公开(公告)日：1991-10-29
申请号：US587249
申请日：1990-09-24
申请人： Kuniyasu Iwazaki , Kihachiro Ohta
发明人： Kuniyasu Iwazaki , Kihachiro Ohta
IPC分类号： F16J15/43 , H02K1/18 , H02K5/124 , H02K29/08
CPC分类号： F16J15/43 , H02K1/187 , H02K29/08 , H02K5/124
摘要： A spindle motor comprising a fixed shaft member, a hub member rotatably supported by the fixed shaft member through bearings, and a magnetic-fluid type sealing mechanism arranged between the fixed shaft member and the hub member. The magnetic-fluid type sealing mechanism has a rotary member mounted on the hub member, a stationary member mounted on the fixed shaft member, and a magnetic fluid holding device for holding a magnetic fluid. The magnetic fluid holding is secured to the annular mounting portion of the stationary member. The magnetic fluid holding device and the annular portion of the rotary member cooperate with each other in holding the magnetic fluid therebetween. The fixed shaft member has an axially extending locating recess or projection, while the stator and the circuit assembly have locating projections or recesses for cooperation with the locating recess or projection of the fixed shaft member so as to set the stator and the circuit assembly in a predetermined angular positional relationship to each other. The fixed shaft member is provided with a stopper projection, and an urging device for urging the stator and the circuit assembly towards the stopper projection is provided, so that the stator and the circuit assembly are held at predetermined axial positions on the fixed shaft member by cooperation between the stopper projection and the urging means.
摘要翻译：一种主轴电动机，包括固定轴构件，通过轴承由所述固定轴构件可旋转地支撑的轮毂构件和布置在所述固定轴构件和所述毂构件之间的磁流体型密封机构。磁流体型密封机构具有安装在轮毂构件上的旋转构件，安装在固定轴构件上的固定构件和用于保持磁性流体的磁性流体保持装置。磁性流体保持固定到固定构件的环形安装部分。磁性流体保持装置和旋转构件的环形部分彼此配合，以保持其间的磁性流体。固定轴构件具有轴向延伸的定位凹槽或凸起，而定子和电路组件具有用于与固定轴构件的定位凹槽或突起配合的定位凸起或凹槽，以将定子和电路组件设置在预定的角位置关系。固定轴构件设置有止动突起，并且设置有用于将定子和电路组件推向止动突起的施力装置，使得定子和电路组件通过固定轴构件被固定在固定轴构件上的预定轴向位置止动突起与推动装置之间的配合。

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