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Bearings > Rotary Bearing > Fluid Bearing Fluid BearingFluid Bearing patent applications listed are from June 2005 to current and include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.11/22/07 - 20070269149 - Hydrodynamic bearing having additional reservoir Disclosed herein is a hydrodynamic bearing having an additional fluid reservoir, which has improved ability to efficiently seal fluid (lubricant), which generates dynamic pressure. The hydrodynamic bearing has an annular fluid storage space coupled to the lower portion of a fluid reservoir, in addition to the existing fluid reservoir formed ... 11/01/07 - 20070253650 - Hydrodynamic bearing type rotary device and recording and reproduction apparatus including the same To prevent air from being trapped inside a bearing and causing the bearing to have oil film rupture and NRRO to deteriorate. In a hydrodynamic bearing, a first lubricant reservoir is provided in a gap between a lower surface of a hub and a sleeve, and a second lubricant reservoir ... 11/01/07 - 20070253649 - 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 a hydrostatic ... 09/06/07 - 20070206889 - Fluid dynamic pressure bearing, spindle motor provided with the fluid dynamic pressure bearing, and recording disk drive device provided with the fluid dynamic pressure bearing A fluid dynamic pressure bearing is constituted in which a shaft member, including thrust plates 5 engaged with small-diameter portions at both ends of a shaft 1, is relatively rotatably combined with a bearing member via radial and axial dynamic pressure bearings. The bearing member includes a casing 3, a ... 08/09/07 - 20070183696 - Fluid dynamic bearing system The invention relates to a fluid dynamic bearing system used particularly for a spindle motor having a shaft that is accommodated in a bearing bush and rotatably supported with respect to the bearing bush, a bearing gap filled with a bearing fluid being located between the shaft and the bearing ... 08/09/07 - 20070183695 - Fluid dynamic bearing system The invention relates to a fluid dynamic bearing system used particularly for a spindle motor, having a shaft, that is accommodated in a bearing bush and rotatably supported with respect to this bush, the bearing bush being tightly sealed at one end by a cover. According to the invention, the ... 08/09/07 - 20070183694 - Performance judgment method for dynamic pressure bearing and dynamic pressure bearing First, an axial clearance is measured. Next, lubricating oil is filled between a sleeve and a shaft, and the shaft is disposed such that a flange is positioned above a shank. Further, in a state where the shaft rotates at a rated rotation speed (a predetermined rotation speed), an axial ... 08/02/07 - 20070177830 - Fluid bearing device The preset invention aims to improve the assembly accuracy and rotation accuracy of a fluid bearing device, and to further reduce the cost thereof. A bearing sleeve is fixed on the inner periphery of a housing. An axial member is supported in a non-contact manner in a radial direction by ... 07/26/07 - 20070172160 - Fluid bearing device The preset invention aims to improve the assembly accuracy and rotation accuracy of a fluid bearing device, and to further reduce the cost thereof. A bearing sleeve is fixed on the inner periphery of a housing. An axial member is supported in a non-contact manner in a radial direction by ... 07/26/07 - 20070172159 - 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 in contact ... 06/28/07 - 20070147715 - Hydrodynamic bearing device, method for manufacturing the same, spindle motor and recording and reproduction apparatus A hydrodynamic bearing device which can improve workability of injecting a lube repellant and effectively prevent leakage of a lubricant, a method for manufacturing the same, a spindle motor, and a recording and reproduction apparatus are provided. A hydrodynamic bearing device 4 includes a lube repellant 11a which is applied ... 06/21/07 - 20070140604 - Bearing unit and rotary drive using the same A bearing unit for rotatably supporting a shaft comprises a seamless holding member with a gap allowing a shaft to run through and extend to the outside, a bearing arranged in the inside of the holding member to rotatably support the shaft so as to make it radially revolvable, an ... 06/14/07 - 20070133911 - Hydrodynamic bearing device, motor, recording disc driving apparatus and assembly jig Means for Solution: A hydrodynamic bearing device 4 comprises a shaft 41, a second thrust flange 41c, a sleeve 42, a radial bearing 71, and a thrust bearing 73. The second thrust flange 41c is fixed near one end of the shaft 41. A third cylindrical protrusion 42e that protrudes ... 05/17/07 - 20070110347 - Anti-moment static-pressure gas bearing mechanism A first and a second static-pressure gas bearings supporting a rod at two locations in the axial direction in the non-contact manner are provided, in which the first static-pressure gas bearing is fixedly supported by a bearing housing, while the second static-pressure gas bearing is supported capable of displacement through ... 05/03/07 - 20070098310 - Oil-suspending and oil-retaining bearing The invention relates to an oil-suspending and oil-retaining bearing. The bearing has a bore for the spindle of the rotor to penetrate therein. The periphery of at least one end penetrated by the bore is disposed a slotted ring inserted with the absorbent material beforehand. The end of the bearing ... 04/26/07 - 20070092170 - Fluid bearing device While applying an ultrasonic vibration to a housing 7 and/or a bearing sleeve 8, the outer peripheral surface 8d of the bearing sleeve 8 is press-fitted into the inner peripheral surface 7c of the housing 7 with a predetermined interference, and is welded thereto. During the press-fitting, the region of ... 04/19/07 - 20070086686 - Hydrodynamic bearing device and spindle motor that makes use of same To generate the desired dynamic pressure with an inexpensive structure. A hydrodynamic bearing device comprises a sleeve 1, a shaft 2, and oil 100. With the sleeve 1, a stepped portion 1b provided at one end and an inner peripheral face 1e extending linearly in the axial direction and continuously ... 04/05/07 - 20070076990 - Motor and bearing structure thereof A bearing structure coupled to a shaft includes a bearing and a cover element. The cover element is held to the bearing and covers at least one portion of one end of the bearing. The cover element has a turning portion, which has a groove. A motor comprises a rotor ... 03/29/07 - 20070071375 - Fluid bearing device A fluid bearing device (50B, 50AB) is composed of a shaft (1, 51); a sleeve (9, 59) into which the shaft (1, 51) is inserted; and lubrication fluid (20) intervening in a gap between the shaft (1, 51) and the sleeve (9, 59), the fluid bearing device (50B, 50AB) supporting ... 03/29/07 - 20070071374 - Motor oil leakage protection structure The invention relates to a motor oil leakage protection structure, which includes a shaft tube. The inner wall of the shaft tube is formed at least two cascaded holes with different inner diameters. The hole with smaller inner diameter is disposed a bearing, and the hole with larger inner diameter ... 03/15/07 - 20070058889 - Fluid bearing device A housing 7 is made of resin material, which comprises a liquid crystal polymer (LCP) as crystalline resin blended with carbon nanotubes in a blending ratio of 2 to 35 vol % as a conductive filler, by injection molding. A bearing sleeve 8, which is inserted into the inner peripheral ... 03/01/07 - 20070047857 - Sleeve for hydrodynamic bearing device, hydrodynamic bearing device and spindle motor using the same, and method for manufacturing sleeve A bearing stiffness of a sintered metal sleeve is prevented from lowering. A sleeve includes an inner section formed of metal powder for sintering and a resin for impregnation, and a surface deformation section which covers a surface of the inner section and is formed by shot blast process. Since ... 02/15/07 - 20070036475 - 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 rotatably support the shaft so as to make ... 02/01/07 - 20070025652 - Fluid bearing device A fluid bearing device which enables cost reductions and prevents static electricity charging. A bearing sleeve is secured inside a housing, and a shaft member is inserted inside an inner peripheral surface of the bearing sleeve. A lubricating oil dynamic pressure effect is used to generate pressure within a bearing ... 11/09/06 - 20060251351 - Dynamic pressure bearing apparatus A dynamic bearing apparatus which supports a shaft and a bearing so as to be capable of relative rotation by a dynamic pressure of a lubricating fluid. A bottomed screw hole (21a) is provided to at least one end of the shaft (21) to screw a headed screw (24) for ... 11/09/06 - 20060251350 - 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, the ... 09/14/06 - 20060204154 - Bearing system for a turbocharger A bearing system for a turbocharger, simple in design and easy to manufacture, having desired rotational dynamics of a three piece bearing design, yet having the superior vibration damping characteristics of a one piece bearing design. The inboard end of each journal bearing includes an axial recess for receiving an ... 08/03/06 - 20060171615 - Dynamic pressure bearing and motor using the same One preferred embodiment of the present invention provides a dynamic pressure bearing formed of a porous material into a shape of a cylindrical sleeve, for rotatably supporting a shaft inserted thereinto, comprising a first groove portion being formed circumferentially in a part of the inner circumferential surface of the dynamic ... 08/03/06 - 20060171614 - Fluid dynamic bearing device, spindle motor and disk drive A fluid dynamic bearing device, a spindle motor and a disk drive apparatus are disclosed. A highly accurate fluid dynamic bearing member of the fluid dynamic bearing device can be formed of a free-cutting stainless steel composition easy to cut or otherwise machine, while at the same time preventing the ... 07/27/06 - 20060165323 - 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 is installed to face the base and supplies ... 07/20/06 - 20060159374 - Fluid lubrication bearing apparatus A resin housing 7 is injection-molded by using a forming mold 11. Moreover, a concave shaped adhesive reservoir 10 is formed by a sink mark of the resin during injection molding on its inner circumferential surface 7e simultaneously with the injection molding of the housing 7. Accordingly, the adhesive can ... 07/13/06 - 20060153479 - Fluid dynamic bearing system The invention relates to a fluid dynamic bearing system particularly to rotatably support a spindle motor to drive the disk(s) of a hard disk drive. The bearing system comprises a bearing sleeve and a shaft accommodated in a bore in the bearing sleeve and rotatably supported with respect to the ... 07/13/06 - 20060153478 - Spindle motor A spindle motor (50) is composed of a base (8), a sleeve (4) in cylindrical shape that is fixed on the base (8), a shaft section (1) inserted into a through hole (4b) of the sleeve (4) that is rotatable with respect to the base (8), a hub (7) that ... 07/06/06 - 20060147133 - Fluid dynamic bearing, spindle motor, recording disk driving device, and method of manufacturing fluid dynamic bearing A lubricant resin layer which is oil resistant is formed on an outer surface of a metallic core portion which is used as a base frame of a shaft. The lubricant resin layer is formed by radially injecting molted resin from a portion on the rotation axis within the metallic ... 06/29/06 - 20060140522 - High pressure barrier to oil loss by diffusion An improved rotational motor, such as a spindle motor for a disc drive, is provided. The motor first comprises a hub having a shaft portion and a horizontal body portion. The motor also comprises a sleeve surrounding the shaft portion of the hub. A fine vertical gap is retained between ... 06/29/06 - 20060140521 - Hydrodynamic bearing device and compact motor including hydrodynamic bearing device A shaft is rotatably inserted through a bearing hole of a sleeve, a screw hole for fastening a clamp to the shaft is formed along a direction of an axis from an upper end portion of the shaft, an operating fluid is charged in a gap between an inner peripheral ... 06/29/06 - 20060140520 - Hybrid orbital fluid dynamic bearing motor Hybrid orbital fluid dynamic bearing motors are disclosed. The motors achieve improved efficiency advantages observed in fluid dynamic bearing motors containing an orbital ring. In addition, the hybrid orbital FDB motor has serial thrust bearings and traditional style journal bearings, which provide typically higher radial and angular stiffness not observed ... 06/22/06 - 20060133703 - Fluid dynamic bearing having pressure-generating surface patterns The invention relates to a fluid dynamic bearing system having pressure-generating asymmetric surface patterns, having at least two bearing parts that are rotatable with respect to each other and form a bearing gap filled with a bearing fluid between associated bearing surfaces. The surface patterns are disposed on at least ... 06/22/06 - 20060133702 - Hydrodynamic bearing assembly A hydrodynamic bearing assembly comprises a bearing (10) defining a bearing hole (12) therein, a shaft (20) rotatably received in the bearing hole with a bearing clearance formed between a bearing surface of the bearing and an outer surface of the shaft, and a cover (40) attached to a top ... 06/15/06 - 20060126979 - 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 that an adhesive (21) which bonds the cover ... 06/15/06 - 20060126978 - 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 to be formed. Then, the bearing parts are combined to ... 06/15/06 - 20060126977 - Fluid dynamic pressure bearing device, and spindle motor and recording disk driving apparatus Vertical grooves extending in the axial direction are formed at equal intervals in the circumferential direction in the inner peripheral surface of a housing. By fixing the outer peripheral surface of a sleeve formed by a sintered metal having a cylindrical-shaped outer peripheral surface and the inner peripheral surface of ... 06/15/06 - 20060126976 - Fan motor with fluid dynamic bearing A fan motor includes an integral bearing member (40′) defining therein an axial inner bearing hole (21′) and forming a ventilating path (25′) in a wall portion thereof to communicate a bottom of the bearing hole with an exterior of the bearing member, a stator assembly (50) mounted to an ... 06/08/06 - 20060120642 - Hydrodynamic bearing device, and spindle motor and information device using the same The invention provides a hydrodynamic bearing device, comprising at least one of a shaft structure and a sleeve having a dynamic pressure-generating mechanism, 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 20-28 ... 06/01/06 - 20060115190 - Bearing structure A bearing structure. A bearing is disposed in a bushing and includes a through hole and a slot. The slot receives a lubricant. An inner wall forming the through hole includes at lease one spiral-shaped furrows for guiding the lubricant into the slot. The inner wall of the bearing is ... 05/18/06 - 20060104554 - Hydrodynamic bearing device, spindle motor, and method for manufacturing hydrodynamic bearing device Highly reliable hydrodynamic bearing device and spindle motor are provided as a result of improving cleanliness by using an iron metal having austenite structure, which is a non-magnetic body, and solving the problem of lowering of abrasion resistance due to low hardness. A shaft is formed using an iron metal ... 05/11/06 - 20060098904 - Bearing element and hydrostatic bearing The invention is defined in that the respective lubrication pocket (9.1, 9.2) of the preferably primary sliding surface (4) is connected by means of at least one respective fluid connecting line (K10.1, K10.2) to the bearing pocket (10.1, 10.2), arranged in or counter to the direction of action (W4), of ... 04/20/06 - 20060083450 - Fluid dynamic-pressure bearing, spindle motor and recording disk driving device A fluid dynamic-pressure bearing according to an example of the present invention includes a thrust dynamic-pressure bearing (19) formed between a bearing member (15) and a rotor hub (22) and a taper sealing portion (27) being continuous with the thrust dynamic-pressure bearing (19) and having a radial gap dimension gradually ... 04/13/06 - 20060078239 - Wave bearings in high performance applications The present disclosure concerns the application of the “Wave Bearing Concept” to journal and thrust fluid film bearings to increase performance and reliability. The wave surface is present on whichever member is stationary or non-rotating. Some applications are: pressurized gas journal wave bearings for increased load capacity and dynamic stability; ... 04/13/06 - 20060078238 - Gas bearing system A gas bearing system comprising two opposing and substantially parallel bearing surfaces (2,4) and at least one gas duct (6) for supplying gas to the bearing gap (5) between said bearing surfaces (2,4). A cavity (10,14,15,18,19) having a content between 0.001 cm3 and 0.2 cm3 is present, which cavity is ... 04/06/06 - 20060072864 - Htdrodynamic bearing assembly and spindle motor having the same This invention is to provide a hydrodynamic bearing assembly, which realizes the high rotation rate in a stable manner and the robust rigidity. The hydrodynamic bearing assembly has a total radial gap of 3 microns or less for preventing the contact in the thrust bearing. The thrust bearing is a ... 03/23/06 - 20060062499 - Integrated hydrodynamic air bearing and seal A pressurized hydrodynamic bearing and seal assembly for radial and/or thrust bearings includes a stationary bearing member formed of a carbon/graphite material positioned adjacent a rotating member so as to define a space between the members when the respective bearing segments are rotating with respect to each other. In one ... 03/16/06 - 20060056751 - Fluid dynamic bearing The invention relates to a fluid dynamic bearing comprising at least two bearing parts that can move with respect to one another and form a bearing gap filled with a bearing fluid between the associated bearing surfaces. Surface patterns that act on the bearing fluid and generate hydrodynamic bearing pressure ... 03/16/06 - 20060056750 - Hydrodynamic bearing device and motor An object of the present invention to provide a hydrodynamic bearing device and a motor having a high performance and reliability which prevents deterioration in a temperature property due to a difference in coefficients of linear expansion of a sleeve and a shaft and prevents abrasion of bearing surfaces of ... 03/09/06 - 20060051001 - Fluid dynamic-pressure bearing device and spindle motor Small-size, small-height fluid dynamic-pressure bearing device that causes a low shaft loss and is less prone to troubles such as shortage and leakage of lubricating liquid. A thrust dynamic-pressure bearing is formed at an inner position and a region having a slightly-widened gap is provided outside of the thrust dynamic-pressure ... 03/09/06 - 20060051000 - Laser surface textured fluid-film bearing A fluid-film bearing including: (a) a first surface region having a first bearing surface, for attaching to a first machine component; (b) a second surface region having a second bearing surface, for attaching to a second machine component; the surface regions designed and configured such that first surface and the ... 03/02/06 - 20060045395 - Shaft member for hydrodynamic bearing device Disclosed is a shaft member for a hydrodynamic bearing device which allows production of a shaft member of smaller size at low cost and which suppresses ion elution from the resin portion, thereby maintaining cleanliness in the hydrodynamic bearing device and making it possible to exert a desired bearing performance. ... 02/23/06 - 20060039635 - Hydrodynamic bearing arrangement for an electric motor The invention relates to a hydrodynamic bearing arrangement for an electric motor, particularly for a spindle motor to drive the platters of a hard disk drive. The bearing arrangement comprises a shaft, a bearing bush and a thrust plate disposed fixedly on the shaft, the shaft and the thrust plate ... 02/23/06 - 20060039634 - Fluid dynamic bearing motor attached at both shaft ends A fixed shaft type fluid dynamic bearing motor having two interfaces of a lubricant at least, in which a channel leading from near the outer region of a rotating sleeve top end to near the periphery of the bottom of the sleeve is formed in the sleeve. The lubricant near ... 02/23/06 - 20060039633 - Fluid dynamic bearing unit A fluid dynamic bearing unit includes a bearing housing (20) axially defining therein a bearing hole (21), a rotary shaft rotatably received in the bearing hole with a radial space formed between the rotary shaft and the bearing housing, and lubricant filled in the radial space. A ventilating path (25) ... 02/23/06 - 20060039632 - Dynamic pressure bearing assembly The present invention discloses an improved dynamic pressure bearing assembly, comprising a bearing, an axial hole passing through the bearing, a plurality of aslant planes milled by a milling machine and extended along the axial direction and disposed on the periphery of the axial hole, and a dynamic pressure generating ... 02/16/06 - 20060034554 - 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 an outer periphery of the spindle shaft. Lubricant is ... 02/09/06 - 20060029311 - Hydrodynamic bearing system having means for measuring the filling level of the lubricant The invention relates to a hydrodynamic bearing arrangement, particularly for a spindle motor to drive the platters of a hard disk drive, the bearing arrangement having a shaft and a bearing bush, which, supported by a lubricant circulating between their bearing surfaces, are rotatable with respect to each other, a ... 02/09/06 - 20060029310 - Loadbearing platform with fluid support, isolation and rotation Device for fluidic support and bi-directional rotation of an item in a process chamber where the operating fluid is compatible with the process. The device has a rotable load bearing platform with a load bearing interface between it and a base in the chamber. Fluid, which may be supercritical fluid, ... 02/02/06 - 20060023982 - Hydrodynamic bearing device A hydrodynamic bearing device in which an introducing minimum clearance for causing capillary phenomenon is formed from the location in the proximity of the opening of a communicating path to the open end of the bearing hole in between the cover and the end face on the open end of ... 02/02/06 - 20060023981 - Gas dynamic pressure bearing, motor having the gas dynamic pressure bearing, and disk drive having the motor A gas dynamic pressure bearing comprises a shaft, a sleeve whose inner peripheral surface is opposed to an outer peripheral surface of the shaft through a micro-gap, and a substantially cylindrical hub which applies a surface pressure to an outer side of the sleeve and which is fitted to the ... 01/26/06 - 20060018573 - Oil dynamic bearing, motor supported on oil dynamic bearing and disk drive carrying the motor An oil dynamic bearing, a motor and a disk drive adapted to be reduced in both size and thickness are disclosed. The oil dynamic bearing (B) includes at least two bearing portions (B1, B2), each having a bearing near end nearer to the rotational axis or the bearing center of ... 01/12/06 - 20060008190 - Fluid dynamic bearing device A fluid dynamic bearing device is disclosed in which, in the materials used for the sleeve of the fluid dynamic bearing device, particles of free-cutting elements and free-cutting alloys added to iron-based free-cutting steel, ferrite-based free-cutting stainless steel, and so on are reduced in size to about 0.1 to 0.5 ... 01/12/06 - 20060008189 - Fluid bearing unit and spindle motor using the same The present invention provides a fluid bearing unit capable of achieving lower torque and lower current consumption in comparison with a conventional bearing unit, and a spindle motor using the same. The present invention employs an ester derived from 1,5-pentanediol having one alkyl side chain and saturated monovalent fatty acid ... 01/05/06 - 20060002641 - Fixed shaft type fluid dynamic bearing motor A fixed shaft type fluid dynamic bearing motor having two interfaces of a lubricating fluid, in which a channel leading from near the top end of the inner periphery of a rotating sleeve to near the periphery of the bottom of the sleeve is formed in the sleeve. The lubricating ... 01/05/06 - 20060002640 - Composite dynamic bearing assembly and manufacturing method thereof A composite dynamic bearing assembly and manufacturing method thereof. The composite dynamic bearing assembly includes a bearing bracket and a bearing. The bearing bracket comprises an internal space. The bearing, disposed in the internal space of the bearing bracket, includes a plurality of bearing blocks. Each bearing block has a ... 01/05/06 - 20060002639 - Spindle motor A spindle motor (80) is composed of a sleeve (5), a shaft (1) that is rotatably sustained by the sleeve (5) in a radial direction through a dynamic pressure bearing (20) containing lubricant (12), and a hub (3) that is fixed to the shaft (1). The hub (3) has a ... 01/05/06 - 20060002638 - Fixed shaft type fluid dynamic bearing motor A fixed shaft type fluid dynamic bearing motor having two interfaces of a lubricating fluid. A channel leading from near the top end of the inner periphery of a rotating sleeve to near the periphery of the bottom of the sleeve is formed in the sleeve. The lubricating fluid flows ... 12/15/05 - 20050276527 - Spindle motor Provided is a spindle motor which includes a base, a sleeve fixed on the base and having a hollow portion, and a shaft rotatably installed in the hollow portion of the sleeve. In the spindle motor, a plurality of journal grooves are formed in an outer circumferential surface of the ... 11/24/05 - 20050259898 - Production method for sintered bearing member, fluid dynamic pressure bearing device, and spindle motor A production method for sintered bearing member comprises: compacting a metal powder into a green compact, sintering the green compact into a sintered compact; impregnating a resin solvent into the sintered compact, and removing the resin solvent adhering to a surface of the sintered compact, thereby exposing a matrix as ... 11/24/05 - 20050259897 - Fluid dynamic bearing asymmetry pressure feedback The present invention relates to the field of fluid dynamic bearings. Specifically, the present invention provides an apparatus and method useful for maintaining axial movement of a rotor in a high speed spindle motor assembly. ... 11/10/05 - 20050249440 - Dynamic pressure bearing device, spindle motor, disk drive device, and method of manufacturing dynamic pressure bearing device A dynamic pressure bearing device and a spindle motor used for a magnetic disk drive device capable of increasing an impact resistance, reducing A-PRO (oscillating motion of shaft), reducing a variation in rigidity of bearings against a variation in temperature, suppressing a current loss, and reducing a size and a ... 10/20/05 - 20050232522 - 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 shaft with a microscopic gap in ... 10/06/05 - 20050220379 - Bearing unit, and motor and electronic apparatus having the bearing unit The bearing unit of the present invention has: a shaft; a radial bearing which supports the shaft in a circumferential direction of the shaft; a thrust bearing which supports an end of the shaft in a thrust direction of the shaft; a housing having a closed structure except for a ... 10/06/05 - 20050220378 - Bearing unit and rotation and drive device The present invention relates to bearing unit for supporting a shaft 2 so as to freely rotate and includes a radial bearing 4 for supporting the shaft 2 so as to freely rotate and a housing member 6 made of a resin for holding the radial bearing 4. The housing ... 09/15/05 - 20050201645 - Hydrodynamic bearing device A hydrodynamic bearing device capable of inhibiting leakage of a working fluid to an outside of a bearing and preventing reduction in radial bearing rigidity, and capable of keeping a gap between a thrust bearing and a radial bearing favorable and rotating stably. The hydrodynamic bearing device includes a shaft ... 08/18/05 - 20050180668 - Bearing unit, and motor and electronic equipment, both equipped with the bearing unit In the present invention, a bearing unit comprises a shaft, a radial bearing for supporting a peripheral rotation direction of the shaft, a thrust bearing for supporting one end of the shaft in a thrust direction, a housing having the radial bearing and the thrust bearing, both arranged therein, and ... 07/28/05 - 20050163405 - Bearing unit, and motor and electronic equipment, both equipped with the bearing unit A bearing unit comprises a shaft, a radial bearing for supporting the shaft in a peripheral rotation direction of the shaft, a thrust bearing supporting an end of the shaft in a thrust direction of the shaft, a housing made of a molded body of a synthetic resin, inside of ... 07/28/05 - 20050163404 - Bearing unit and rotation drive device 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 rotatably support the shaft so as to make ... 07/21/05 - 20050157963 - Hydrodynamic bearing system The invention relates to a hydrodynamic bearing system particularly for the rotary bearing of spindle motors to drive the platters in hard disk drives which comprises at least one inner bearing part and at least one outer bearing part, the bearing parts being rotatable about a rotational axis with respect ... 07/07/05 - 20050147334 - Bearing device and motor using the bearing device A bearing device is composed of a sleeve (3a) for supporting a rotating shaft across a radial axis gap and a housing (3b) formed with a storage hole for storing the sleeve (3a). The sleeve (3a) housed in the storage hole of the housing (3b) is fixed to the housing ... 06/23/05 - 20050135714 - Grooves on both the moving and the stationary mating fluid dynamic bearing surfaces for performance enhancement A fluid dynamic bearing is provided having a first surface having at least a first groove pattern formed therein; and the second surface having at least a second groove pattern formed therein; wherein one of the surfaces is configured to be rotated relative to the other surface. The groove patterns ... 06/02/05 - 20050117822 - Bearing for heat dissipating fan An improved bearing for a heat dissipation fan has an oil chamber for containing lubricant. The oil chamber has a sidewall extending between one open end and one closed end. The closed end is perforated with a through hole, and an edge of the sidewall at the open end is ... ### FreshPatents.com Support |