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| Number | Title | Issue Date |
| 8186882 | Gas bearing and fabrication method A method of fabricating a bearing surface for a gas or air bearing is described. The method comprises taking a bulk bearing portion having at least one bearing surface region and providing a coating on the bearing surface region to define at least one gas pocket). T... | 05/29/2012 |
| 8177433 | Hydrodynamic bearing unit A housing for a hydrodynamic bearing unit of this type is formed from a resin material having high oil resistance and low outgassing property to ensure the cleanliness of the bearing unit. An ester-based lubricating oil is used as a lubricating oil filled inside the... | 05/15/2012 |
| 8162544 | Gas bearing spindle A gas bearing spindle includes a rotation shaft, a sleeve, and a housing. The sleeve includes a bearing portion formed of a nonmetallic sintered body; and a retaining ring formed of a metal. Further, the retaining ring and the bearing portion are in contact with eac... | 04/24/2012 |
| 8092090 | Fluid dynamic bearing device A fluid dynamic bearing device having high bearing performance at low cost is provided. A bearing member 6 includes an inner diameter part 8 having a radial bearing surface and an outer diameter part 7 having a mounting surface for a brac... | 01/10/2012 |
| 8079760 | Fluid bearing device An object is to reduce manufacturing cost of a housing, and enable to disuse an adhesive in fixation portions between a housing and a bearing sleeve and the like. A housing 7 is made of resin material, which comprises a liquid crystal polymer (LCP) as ... | 12/20/2011 |
| 8038350 | Hydrodynamic bearing device In order to prevent degradation of accuracy and decrease of strength when a hydrodynamic bearing device is assembled and to reduce a cost of the hydrodynamic bearing device, a guide face serving as a guide when a disc hub is press fitted into a shaft member is forme... | 10/18/2011 |
| 8033732 | Hydrodynamic bearing device, and spindle motor equipped with same In a hydrodynamic bearing device with which the lubricant is prevented from leaking to the outside, and good seal performance can be maintained, and in a spindle motor equipped with this hydrodynamic bearing device, the hydrodynamic bearing device includes a shaft, ... | 10/11/2011 |
| 8033731 | Fluid dynamic bearing motor having molded plastic A fluid dynamic bearing motor and method are described, wherein motor components, including complex shaped motor components, are molded of plastic. The molding ensures form control and dimensional control thereby accomplishing design requirements, and eliminating or... | 10/11/2011 |
| 8007175 | Hydrodynamic bearing device, and spindle motor and information apparatus equipped with same The cross sectional shape of an axial direction communicating path when viewed in the axial direction is flat in the circumferential direction, and the cross sectional area of the communicating path gradually decreases moving from the center of the cross section tow... | 08/30/2011 |
| 8002471 | Fluid dynamic bearing apparatus and a motor using the same Assembly precision in a motor is improved and greater cost reduction is achieved. A fluid dynamic bearing apparatus 1 comprising a housing 7 and bearing sleeve 8 as fixed-side members 2, a shaft member 9 as a rotational-side... | 08/23/2011 |
| 7931404 | Bearing device and motor mounted with the bearing device A bearing device is composed of a shaft, a sleeve for supporting the shaft so as to be rotatable freely and a housing having a through hole into which the sleeve is inserted. A circumferential groove that extends in a circumferential direction is formed on either on... | 04/26/2011 |
| 7918605 | Gas journal bearing systems and related methods Gas journal bearing systems are provided. An exemplary gas journal bearing system comprises a vortex generator, a housing and a journal. The vortex generator is operative to receive a flow of gas and to impart an angular acceleration to the gas. The housing is in fl... | 04/05/2011 |
| 7905661 | Retaining structure for motor elements A retaining structure for motor elements includes an axial tube and a cap. The cap includes a stop and a coupling portion. At lease one motor element is received in the axial tube. The coupling portion of the cap is engaged with a coupling section of the axial tube ... | 03/15/2011 |
| 7866888 | Hydrodynamic bearing with sloping surface A hydrodynamic bearing (300) has a bearing surface adapted for receiving a shaft to rotate thereon. The bearing surface has a plurality of grooves (34) defined therein. The grooves for generating hydrodynamic pressure each has at least one interior sur... | 01/11/2011 |
| 7862237 | Hydrodynamic bearing and spindle motor and information recording and reproducing apparatus equipped with the same As axis direction dimensions become smaller in HDD spindle motors as a result of thinner and more compact designs, there is a demand for hydrodynamic bearings with a long lifespan. As a means of solving this problem, a lubricant reservoir section is formed between a... | 01/04/2011 |
| 7857516 | Hydrodynamic bearing with bearing surface having branched grooves A hydrodynamic bearing (300) has a bearing surface adapted for receiving a shaft to rotate thereon. The bearing surface has a plurality of grooves (34) defined therein. The grooves are used for generating hydrodynamic pressure. A depth of each of the g... | 12/28/2010 |
| 7819585 | Fluid dynamic bearing apparatus and a motor using the same Assembly precision in a motor is improved and greater cost reduction is achieved. A fluid dynamic bearing apparatus includes a housing and bearing sleeve as fixed-side members, a shaft member as a rotational-side member having a portion for mounting a rotor magnet, ... | 10/26/2010 |
| 7794152 | Bearing for motor A bearing is mounted in an axle tube of a motor and includes an axial hole for rotatably receiving a shaft of the motor. At least one guiding groove is defined in a peripheral wall defining the axial hole. The guiding groove extends axially from an end face toward b... | 09/14/2010 |
| 7794151 | Fluid dynamic bearing system The invention relates to a fluid dynamic bearing system particularly for the purpose of rotatably supporting a spindle motor, having a first bearing part that comprises a bearing sleeve, and a second bearing part that comprises a shaft, the two bearing parts being s... | 09/14/2010 |
| 7789565 | Fluid dynamic bearing apparatus A smooth surface of a shaft member is divided from an outer circumferential surface by a step so that its axial length dimension becomes shorter than the axial length dimension of a hydrodynamic groove region formed on the inner circumferential surface of a bearing ... | 09/07/2010 |
| 7789566 | Dynamical pressure bearing device, motor, and recording disc driving device There is provided a dynamical pressure bearing device, a motor and a recording drive device. The dynamical pressure bearing device has a shaft having a first bearing surface and a first portion exteriorly adjacent to the first bearing surface; and a sleeve having a ... | 09/07/2010 |
| 7775719 | Bearing unit and rotary drive using the same A bearing unit (90) for rotatably supporting a shaft (100) comprises a seamless holding member (120) with a gap allowing a shaft to run through and extend to the outside, a bearing (130) arranged in the inside of the holding member to rot... | 08/17/2010 |
| 7712963 | Fan, motor and bearing structure thereof A bearing structure which is cooperated with a shaft and is disposed in a bearing tube comprises an oil bearing and a cylindrical sealing member. The oil bearing has an axial hole. The shaft passes through the axial hole. The cylindrical sealing member covers a top ... | 05/11/2010 |
| 7699527 | Fluid bearing device Disclosed is a fluid dynamic bearing device in which it is possible to prevent detachment of the shaft member reliably and at low cost without involving any increase in the device size. In a thrust bearing portion T, the lower end surface of the shaft member is held... | 04/20/2010 |
| 7690845 | Fluid bearing device An object is to reduce manufacturing cost of a housing, and enable to disuse an adhesive in fixation portions between a housing and a bearing sleeve and the like. A housing 7 is made of resin material, which comprises a liquid crystal polymer (LCP) as ... | 04/06/2010 |
| 7661882 | Fluid dynamic pressure bearing device, spindle motor provided with the fluid dynamic pressure bearing device, and recording disk drive device A fluid dynamic pressure bearing device includes a shaft member (5) and a bearing member (41), at least one of the shaft member or the bearing member being rotatable with respect to the other. A shaft member-side annular member (13) is fixed wit... | 02/16/2010 |
| 7625123 | Hydrodynamic bearing device and spindle motor that makes use of same A hydrodynamic bearing device including a sleeve (1), a shaft (2), and oil (100). With respect to the sleeve (1), a stepped portion (1b) provided at one end and an inner peripheral face (1e) extending linearly ... | 12/01/2009 |
| 7625122 | Fluid dynamic bearing A fluid dynamic bearing includes a bearing member (30) axially defining an inner bearing hole therein, and a spindle shaft (20) rotatably received in the bearing hole with a bearing clearance formed between an inner periphery of the bearing member and ... | 12/01/2009 |
| 7614791 | Bearing unit and motor using the same A bearing unit wherein a radial bearing for bearing a shaft in the circumferential direction of the shaft and a metallic housing provided with an attaching section are integrated with each other by molding, a resin molded body formed by the molding is so formed as t... | 11/10/2009 |
| 7600919 | Motor lubricant cycling system The invention relates to a motor lubricant cycling system, wherein a plurality of slots are disposed in the inner wall of the shaft tube in contact with the bearing, one end of the slot is connected to the conjunction of the top side of the bearing and the shaft, th... | 10/13/2009 |
| 7572059 | Fluid circulating hydrodynamic pressure bearings A bearing includes a hub to drive recording media; a sleeve to rotatably support the hub to define a hydrodynamic pressure generating space between the hub and the sleeve, the sleeve being formed with a fluid outlet through which the fluid passes at the predetermine... | 08/11/2009 |
| 7563030 | Method of making fluid dynamic bearing A method of making a fluid dynamic bearing (10) includes the flowing steps. At least two bearing parts (10a, 10b) are firstly provided. Each of the bearing parts has its shape corresponding to a portion of the fluid dynamic bearing... | 07/21/2009 |
| 7559696 | Active thrust management system An active thrust management system varies pressure responsive to changes in rotor assembly thrust to maintain a desired position. The system includes a bearing supporting rotation of a rotor assembly within a pressurizing chamber. The rotor assembly is supported on ... | 07/14/2009 |
| 7553085 | Fluid bearing and method of operation A fluid bearing includes hydrostatic pads formed in a surface and positioned to exert a separating force, and a land formed on the surface of the insert and configured to act as a bushing to allow rotation while the first and second pads are pressurized at less than... | 06/30/2009 |
| 7530741 | Fluid bearing device and spindle motor A fluid bearing device capable of responding to miniaturization while preventing an operating fluid such as a lubricating oil from leaking out to the outside. The fluid bearing device includes a shaft and a sleeve arranged on an outer periphery with respect to the s... | 05/12/2009 |
| 7527431 | Bearing unit and rotating apparatus using the bearing unit A bearing unit and a rotating apparatus which prevent leakage of lubricating oil to the utmost and which are superior in reliability are disclosed. A radial bearing and a thrust bearing support a shaft for rotation, and a path forming member and a path forming membe... | 05/05/2009 |
| 7520674 | Magnetic disk device with rotor supported by fluid bearing Embodiments of the invention make high-speed rotation of a magnetic disk, suppression of an increase in electric power consumption, and suppression in shaft falling vibration compatible together in a magnetic disk device. In one embodiment, a magnetic disk device co... | 04/21/2009 |
| 7513688 | Hydrodynamic bearing device and inspection method of amount of working fluid A hydrodynamic bearing device in a hydrodynamic bearing device in which a sleeve (2) is covered with a cover (5), which is capable of easily confirming that a working fluid is favorably filled between the cover and the sleeve, and easily confirming tha... | 04/07/2009 |
| 7497626 | Spindle motor structure and hard disk drive employing the same A spindle motor structure including a spindle motor installed on a base and having a hydrodynamic bearing supporting a shaft to be capable of rotating using hydrodynamic pressure and a driving source rotating the shaft using an electromagnetic force. A circuit board... | 03/03/2009 |
| 7484891 | Oil film bearing for roll pins having a hydrostatic support An oil film bearing (1) for roll pins (4), which or whose pin bush (3) that is placed thereon is surrounded by a bearing bush (3) placed in an insert (2). The bearing bush has at least two inner lying hydrostatic pockets (9, 9 | 02/03/2009 |
