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| Number | Title | Issue Date |
| 7726882 | Dual seal for optimized performance A fluid dynamic bearing having a hub, a sleeve, and a sealing arrangement comprising a first capillary seal substantially retaining a first fluid and a second capillary seal comprising a second fluid. The second capillary seal is located between the first capillary ... | 06/01/2010 |
| 7387431 | Sanitary steady bearing and method A sanitary steady bearing assembly and method provides for sanitary characteristics, easy cleanability, and easy replacement of wear parts without distributing the rest of the agitator, and can also support the agitator shaft during seal changes. The bearing assembl... | 06/17/2008 |
| 7365940 | Hard disk drive device, and fluid dynamic bearing spindle motor and assembling method thereof A hydrodynamic bearing for a hard disk drive device is disclosed. An oil is filled in a clearance between an inner surface of the hub and an outer surface of the shaft, whereby a hydrodynamic radial bearing is formed between the inner periphery of the hub and the ou... | 04/29/2008 |
| 7347625 | Grooving in FDB motor capillary seal For motors using liquid lubricated bearing surfaces, shock resistant capillary seals and lubricating liquid reservoirs are provided. The seals and reservoirs are formed by the radially opposing disposition of an inner surface of an outer member and an outer surface ... | 03/25/2008 |
| 7337764 | Pressure balanced bearing A method of pressure balancing across a bearing adjacent to a pressure differential is described. The method primarily includes providing a bypass port around the bearing for allowing a fluid flow from a first pressure side to a second pressure side. A throttle body... | 03/04/2008 |
| 7296801 | Anti-leakage device for lubrication oil in a fan An anti leakage device of lubrication oil for a fan includes a hub seat, a sleeve and a hub. The sleeve is provided on the hub seat and has a bearing therein to form an oil storage part for receiving lubrication oil. The hub is provided on the hub seat and has an an... | 11/20/2007 |
| 7294946 | Motor using dynamic gas bearings A dynamic pressure gas bearing motor in which a radial dynamic pressure gas bearing and a thrust dynamic pressure gas bearing are ensured to have sufficient length and diameter even though the clamping screw holes for introducing screws to reliably hold a disk are f... | 11/13/2007 |
| 7291947 | Electric rotating machine with bearing seals Hydrogen gas is circulated to cool an electric rotating machine main body, and brush seals are provided to contact a predetermined position on the outer circumferential surface of a rotating shaft. As a result, contact of a sealing oil and the hydrogen gas, contact ... | 11/06/2007 |
| 7284910 | Capillary seal with flow restrictors A disk drive motor having a capillary bearing seal is provided. In one embodiment, a disk drive motor includes a stationary assembly and a rotating assembly having a fluid dynamic journal bearing disposed therebetween. A capillary seal is defined proximate an upper ... | 10/23/2007 |
| 7281852 | Spool bearing with asymmetric sealing A spindle motor is provided comprising a fixed shaft capable of being fastened at either end to the base and cover of the disc drive. The hub which rotates around the disc drive is supported for rotation by a journal bearing and thrust bearing, with the thrust beari... | 10/16/2007 |
| 7265939 | Spindle motor and disk drive unit Disclosed is a spindle motor and a disk drive unit equipped with the same, having advantages of preventing hard collision between a disk and a signal conversion element due to lifting of rotating components, and avoiding the signal conversion element and swing means... | 09/04/2007 |
| 7226133 | Environment protector air compressor pressurized wheel hub A pressurized wheel hub formed from an air-tight sealing arrangement located on each end of a wheel hub to form a closed air system in the interior of the wheel hub. The closed air system fluidly coupled to a DC power air compressor for receiving pressurized air. A ... | 06/05/2007 |
| 7224552 | High-speed centrifugal seal for a spindle motor A robust spindle motor is provided having added shock resistance for fluid containment. In an aspect, a high-speed centrifugal capillary seal contains a fluid reservoir extending between similarly rotatable components. Fluid is recirculated through the motor and sub... | 05/29/2007 |
| 7204642 | 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 i... | 04/17/2007 |
| 7201379 | Seal assembly, cartridge, and method A seal assembly and cartridge for sealing a space between a rotating member and a stationary member in which a sleeve extends around the rotating member and with the inner surface of the sleeve being spaced from the outer surface of the rotating member to form a gap... | 04/10/2007 |
| 7201516 | Fluid bearing device A fluid bearing device capable of preventing a lubricant from scattering outward even during rotation thereof, while holding a relatively large amount of lubricant at a seal surface portion. A lubricant is filled between a sleeve and a shaft, a seal surface portion ... | 04/10/2007 |
| 7189054 | Self-compensating clearance seal for centrifugal pumps A radial seal is provided for installation within a centrifugal pump of the type having an impeller, a pump casing having a suction inlet, a sealing ring groove formed in the pump casing, and means for supplying flushing water to the sealing ring groove. The radial ... | 03/13/2007 |
| 7137739 | 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... | 11/21/2006 |
| 7134668 | Differential pumping seal apparatus A differential pumping seal apparatus includes a differential pumping seal for sealing a first space and a second space from each other in a non-contact manner, and a back up seal mechanism for sealing the first space and the second space from each other in a contac... | 11/14/2006 |
| 7131770 | Hydro fill controlling shield and sleeve for a hydrodynamic bearing A hydrodynamic bearing system, having a bearing sleeve and a shaft inserted into an inner cylindrical bore of the bearing sleeve. A bearing gap is formed between the shaft and the bearing sleeve, the bearing gap being filled with a lubricating oil. A shield encloses... | 11/07/2006 |
| 7125084 | Environment protector-pressurized wheel hub A hub cap for a wheel hub having a cylindrical housing with a closed first end and an open second end adapted for attachment in an air-tight sealing arrangement to the outer end of a wheel hub to form a closed air system in the interior of the wheel hub. An air pres... | 10/24/2006 |
| 7121726 | Fluid bearing device A fluid bearing device for preventing a lubricant from scattering outside even during rotation thereof, while holding a relatively large amount of lubricant in a seal surface portion. Lubricant is filled between a sleeve and a shaft, the seal surface portion is form... | 10/17/2006 |
| 7118278 | Hydrodynamic bearing, manufacturing method of hydrodynamic bearing, spindle motor provided with hydrodynamic bearing and disk drive device provided with this spindle motor A suitable the inner point is set on a vapor-liquid face of lubricating fluid formed in a composite capillary seal section that utilizes capillary force and rotational centrifugal force acted on the lubricating fluid. An inner peripheral surface of a ring-shaped por... | 10/10/2006 |
| 7118189 | Autopurge printing system A system, including an ink supply system configured to supply ink to a printhead; and an autopurge unit configured to automatically clean the printhead. The autopurge unit includes a solvent supply in fluid communication with a solvent line, a solenoid housing, and ... | 10/10/2006 |
| 7095147 | Single thrust magnetically biased fully recirculating self purging fluid dynamic bearing motor A fluid dynamic bearing motor features a stationary assembly, a rotating assembly supported on the stationary assembly, a fluid dynamic bearing system in a gap between the stationary and rotating assemblies, a radial capillary seal defined proximate a first end of t... | 08/22/2006 |
| 7063342 | Suspension arm kit, vehicle with protective spacer on suspension arm, and method of installing suspension arm An improved apparatus is provided for use in a vehicular suspension arm. A through-hole is formed in one end of the suspension arm, and a bearing fits centrally in the through-hole. A pair of cylindrical spacer members are inserted into the opposed ends of the throu... | 06/20/2006 |
| 7059773 | Hydrodynamic bearing, spindle motor and hard disk drive The invention relates to a hydrodynamic bearing having a shaft, a bearing sleeve that encloses the shaft with a short radial spacing forming a concentric bearing gap, and an equalizing volume that is disposed between an outer circumference of the bearing sleeve and ... | 06/13/2006 |
| 7059772 | Hydrodynamic bearing, spindle motor using the same and disc drive apparatus provided with spindle motor The present invention relates to a hydrodynamic bearing supporting a shaft and a sleeve so as to relatively rotate with respect to a rotation axis. In accordance with one example of the present invention, there is provided a hydrodynamic bearing in which a capillary... | 06/13/2006 |
| 7056026 | Capillary seal with fill pool Improved capillary sealing is provided for withstanding shock events, vibration and evaporation, for use with fluid dynamic bearings. In an aspect, minimal axial space is occupied by a fluid reservoir and the sealing system and method withstands at least 1000 G shoc... | 06/06/2006 |
| 7005768 | Dynamic bearing device, producing method thereof, and motor using the same A securing surface of a housing comprises a deformation region, which deforms radially outward by a predetermined quantity during press fitting of a thrust member, and another region. The deformation region has a tapered shape that gradually reduces in diameter in t... | 02/28/2006 |
| 7001074 | 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... | 02/21/2006 |
| 7001075 | Bearing hub A bearing hub for a gas turbine engine comprises an inner annular member defining a bearing chamber and an outer annular member extending around the inner annular member. Each annular member defines an aperture to receive a conduit which can extend to the bearing ch... | 02/21/2006 |
| 6994473 | Grease replenishing device A grease replenishing device replenishes a grease-lubricated rolling bearing with a grease. The grease replenishing device has a storage chamber portion and a pressing member. The storage chamber portion stores the grease. The pressing member pushes the grease out o... | 02/07/2006 |
| 6939046 | Hydrodynamic bearing, spindle motor and hard disk drive A hydrodynamic bearing having a shaft, which is fixedly connected at one end to a rotating component, and a bearing sleeve, which encompasses the shaft at its other free end with a slight clearance. The sleeve and the shaft form a concentric bearing gap. The shaft a... | 09/06/2005 |
| 6919659 | Rotor assembly for an electric motor and electric motor with internal rotor An electric motor having a stator arranged on a sleeve; and a rotor assembly having a rotor shaft and at least one permanent magnet arranged on the rotor shaft, the rotor shaft being rotatbly housed in the sleeve. An external dimension of the rotor assembly and an i... | 07/19/2005 |
| 6910799 | Mixing apparatus and method A mixing apparatus having a blade mixer affixed to the end of a mixer shaft which is rotatably or non-rotatably, but slidably mounted thru a mixer seal member which is adapted to be brought into sealing engagement with the open filler end of a retail tube of viscous... | 06/28/2005 |
| 6905399 | Conditioning mechanism for chemical mechanical polishing Embodiments of a conditioning mechanism for a chemical mechanical polishing system have been provided. In one embodiment, a conditioning mechanism includes a rotor assembly and a conditioning element mounting assembly. A seal is disposed between the rotor assembly a... | 06/14/2005 |
| 6890104 | Hydrodynamic bearing device A bearing has a thrust plate integrated with its shaft and a bearing member surrounds both. A radial pressure bearing portion and separate thrust portion generate pressure on a lubricating fluid in a gap between the shaft and bearing member. One end of the gap is cl... | 05/10/2005 |
| 6888278 | Spindle motor and disk drive utilizing the spindle motor Low-profile spindle motor whose entire shaft length is utilized to configure, along an encompassing sleeve, a radial dynamic-pressure bearing section. One end of the shaft is unitary with the rotor, and a cover member closes the other end. Between the sleeve upper-e... | 05/03/2005 |
| 6860636 | Dynamic pressure bearing A dynamic pressure bearing is provided which has a lubricant fluid reservoir space that can easily cope with increasing and decreasing of a lubricant fluid, and that can surely prevent leakage of the lubricant fluid to the outside caused by thermal expansion due to ... | 03/01/2005 |
