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| Number | Title | Issue Date |
| 8075190 | Spherical plain bearing pocket arrangement and wind turbine having such a spherical plain bearing A plain bearing assembly for a wind turbine includes a bearing housing having a passageway configured to receive a shaft and a bearing surface defining the passageway and having a generally spherical configuration. The bearing surface includes lower and upper portio... | 12/13/2011 |
| 7425097 | Inertial measurement unit with wireless power transfer gap control An inertial measurement unit comprises an outer case assembly including an upper gas plenum and a lower gas plenum, with upper and lower support shells surrounded by the upper and lower gas plenums. A sensor assembly includes a sensor shell, with the sensor assembly... | 09/16/2008 |
| 7382070 | Spherical bearing, electric motor and circulation pump To improve a spherical bearing including a bearing body with a convex spherical surface, a holder, on which the bearing body is disposed, and a bearing shell with a concave spherical surface, the bearing shell being rotatably mounted on the bearing body, in such a w... | 06/03/2008 |
| 7234868 | Radial pumping oil seal for fluid dynamic bearing motor 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 first vertic... | 06/26/2007 |
| 7125169 | Hydrodynamic pivot bearing The present invention provides a bearing comprised of a hydrodynamic bearing and a pivot bearing, which can be used with a spindle motor. It also provides a spindle motor utilizing a hydrodynamic bearing and a pivot bearing. ... | 10/24/2006 |
| 7101085 | Rotating shaft conical fluid dynamic bearing A fluid dynamic bearing design is provided featuring a rotating shaft with at least one conical bearing formed integrally thereon. The shaft is disposed through a stationary sleeve, and a fluid separates the shaft and sleeve surfaces. ... | 09/05/2006 |
| 7090634 | Driving system for a separator having a centrifugal drum and a neck bearing A driving system for a separator having a centrifugal drum with a vertical axis of rotation. The driving system includes a vertically aligned driving spindle configured to accommodate a centrifugal drum. The driving spindle is arranged by a neck bearing and a footst... | 08/15/2006 |
| 7090401 | Grooving pattern for grooved fluid bearing A fluid dynamic bearing is provided having two surfaces rotatable with respect to each other, a lubricating medium located in a gap between the two surfaces during rotation of the bearing, and an interrupted and offset groove pattern formed on one of the two surface... | 08/15/2006 |
| 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 |
| 6961213 | Disk drive spindle motor having hydrodynamic bearing working surface with low friction layer formed on wear resistant layer A disc drive storage system including a housing having a central axis, a stationary member that is fixed with respect to the housing and coaxial with the central axis, and a rotatable member that is rotatable about the central axis with respect to the stationary mem... | 11/01/2005 |
| 6954330 | Disk chuck A disk chuck which centers and clamps data storage disks during a disk formatting process. The disk chuck is designed to clamp or unclamp the disks at the same time. The disk chuck includes a hollow main shaft which orderly fits and seats the disks thereon and a pis... | 10/11/2005 |
| 6609829 | Hydrodynamic bearing for motor A hydrodynamic bearing according to the present invention comprises a rotary shaft having a convex portion provided at one end portion thereof, a sleeve which rotatably supports the rotary shaft, and having herringbone grooves formed in an inner wall ther... | 08/26/2003 |
| 6561086 | Automatic aligning pressing apparatus An apparatus main body 1 is provided with an air supply passage 19 for supplying compressed air for supporting a borne surface 42 in a shape of a projecting spherical surface of an aligning member 4 on a bearing surface 32 in a shape of a partial recessed... | 05/13/2003 |
| 6024492 | Hemispherical bearing apparatus A hemispherical bearing apparatus includes a MoS2 layer formed to a predetermined thickness on the surface of a hemispherical recessed portion formed in a bushing or on the surface of a hemispherical member opposed to the recessed portion. The ... | 02/15/2000 |
| 5980113 | Asymmetric sealing means for fluid dynamic bearings An improved capillary seal for use with a hydrodynamic bearing is disclosed, which provides a stronger or stiffer seal for a fluid dynamic bearing motor which is open at both ends, and is used with top cover attached motors utilizing fluid dynamic bearing... | 11/09/1999 |
| 5971615 | Hemispheric bearing apparatus for preventing deformation of hemisphere A hemispheric bearing apparatus for preventing deformation of a hemisphere occurring when a shaft is push-fitted into a shaft inserting hole formed at the center of a hemisphere in a hemispheric bearing which supports a thrust load and a radial load at th... | 10/26/1999 |
| 5957587 | Air dynamic bearing An air dynamic bearing is constructed to prevent the inflow of a foreign substance. The air dynamic bearing includes an inner member having a lubricious surface and fixed to a shaft which rotates, and an outer member having a lubricious surface correspond... | 09/28/1999 |
| 5957588 | Air bearing for a spindle A self-acting air bearing for a pressurized spindle air bearing includes a bearing that is located within a cavity of a housing. The bearing and cavity may be shaped as a segment of a sphere. The spindle may be connected to a pressurized air source which ... | 09/28/1999 |
| 5952752 | Hemispherical dynamic pressure bearing A motor includes a rotor bushing having first and second hemispherical grooves formed on top and bottom surfaces thereof, first and second hemispherical bearings inserted into the first and second hemispherical grooves, respectively, and a supporting shaf... | 09/14/1999 |
| 5938342 | Semi-spherical bearing A semi-spherical bearing disposed in a rotor of a motor has a bottom disposed on a horizontal plane and a top and comprising a plurality of grooves, each of the grooves extending from the bottom toward the top and being defined by one end wall and two sid... | 08/17/1999 |
| 5934810 | Hemispheric fluid bearing apparatus A hemispheric bearing apparatus which enables a bushing to rotate without contacting a hemisphere. The hemispheric bearing apparatus according to the present invention includes hemispheres, the bushing which has hemispheric grooves formed at both ends, fo... | 08/10/1999 |
| 5898247 | Electric motor having a spherical bearing An electric motor includes a stator frame carrying a coil, and a rotor bushing carrying a magnet. The coil rotates the rotor bushing relative to the stator housing about a vertical axis. The stator frame and rotor bushing together form a cavity in which a... | 04/27/1999 |
| 5883453 | Hemispherical dynamic pressure bearing A hemispherical dynamic pressure bearing includes a supporting shaft, a fixed hemisphere fixed on a first end of the supporting shaft, and a sliding hemisphere slidably disposed on a second end of the supporting shaft. A spring is disposed on the supporti... | 03/16/1999 |
| 5854524 | Motor with semi-spherical bearing Disclosed is a motor including a stator, a rotor cooperating with the stator, a rotating shaft rotating with the rotor, the rotating shaft being provided in its bottom with a receiving space, and a semi-spherical bearing disposed in the receiving space of... | 12/29/1998 |
| 5848844 | Fluid bearing It is an object of the invention to provide an inexpensive and high-quality fluid bearing which improves the workability in assembly or coupling of a shaft and a rotator. In order to achieve this object, a fluid bearing according to the invention includes... | 12/15/1998 |
| 5822152 | Ultra-slim disk storage unit with an enclosed circuit board and a hydrodynamic bearing assembly which forms a stable meniscus An ultra-slim disk storage unit includes a frame and a cover for engaging the frame to create first and second enclosed spaces therein. In one of the enclosed spaces a disk drive assembly is housed which provides readable and writable information storage ... | 10/13/1998 |
| 5801464 | Pressurized air-ionization ground for an air bearing spindle A spindle motor assembly which utilizes a ionized air bearing to provide a conductive path through the assembly. The spindle motor assembly includes a spindle shaft that is located within a housing and rotated by an internal motor. The assembly also conta... | 09/01/1998 |
| 5789839 | Aerostatic and aerodynamic bearing for a motor The invention relates to a high precision axial and radial aerostatic and aerodynamic bearing for a motor. The bearing surfaces of the stator and the rotor are of a toroidal shape.... | 08/04/1998 |
| 5760509 | Spindle motor using an air bearing A spindle motor using an hemispherical-type air bearing, wherein air circulation means is formed on the shaft inserted and fixed in the air bearing, so that air inflow to the air bearing and air circulation within the bearing are highly facilitated, where... | 06/02/1998 |
| 5709480 | Hemispherical fluid bearing A hemispherical fluid bearing has a pair of inner rings, each having a spherical outer lubricating surface, which are fixed to a shaft, and an outer ring having a lubricating surface corresponding to the lubricating surfaces of the inner rings for support... | 01/20/1998 |
| 5707718 | Porous-plastic bearing and method of manufacturing porous-plastic bearing A porous-plastic bearing comprises a porous-plastic sliding bearing member which is formed by gathering a cluster of plastic particles each having a volume in the range of from about 0.004 mm3 to about 4 mm3 and sintering the cluster... | 01/13/1998 |
| 5642943 | Self-aligning air bearing for use with servo-track writer A self-aligning air bearing suited to stabilize a rotary structure having a height greater than the width of the structure. A substantially round sleeve is located in a central chamber formed between a mated top and bottom race. An air gland mounted withi... | 07/01/1997 |
| 5518319 | Non-linear hydrodynamic bearing Non-axially-cylindrical journal and bearing assembly operates with hydrodynamic lubrication and has high load capability.... | 05/21/1996 |
| 5488523 | Ultra-slim disk storage unit having a hydrodynamic bearing assembly which forms a stable meniscus An ultra-slim disk storage unit includes a frame and a cover for engaging the frame to create first and second enclosed spaces therein. In one of the enclosed spaces a disk drive assembly is housed which provides readable and writeable information storage... | 01/30/1996 |
| 5485891 | Cone drill bit A cone drill bit includes legs and attached to them trunnions with cones mounted thereon. A support unit for mounting the cones upon the trunnions includes a strengthened radial thrust ball bearing which transmits a load directed along a cone centerline. ... | 01/23/1996 |
| 5449235 | Self-aligning rotor-hydrostatic bearing system A self-aligning rotor-hydrostatic bearing system and method of bearing operation are provided. A rotor includes a surface defining a portion of a sphere. A bearing having a concave spherical surface adjacent the rotor spherical surface is movable with res... | 09/12/1995 |
| 5328271 | Hydrodynamic spindle bearing for ultra-slim disk storage unit A hydrodynamic bearing assembly for a disk storage unit includes a hub having a longitudinal axis disposed in a cavity formed between a base and a cover. A pair of balls is disposed within a pair of corresponding sockets with each being aligned opposite o... | 07/12/1994 |
| 5284391 | Apparatus for adjustment of a hydrodynamic spindle bearing assembly A hydrodynamic bearing assembly for a disk storage unit includes a hub having a longitudinal axis disposed in a cavity formed between a base and a cover. A pair of balls is disposed within a pair of corresponding sockets with each being aligned opposite o... | 02/08/1994 |
| 5172981 | Hydrostatic bearing apparatus A spherical hydrostatic bearing having a ball mounted in a split socket for substantially friction free movement relative thereto and a linear hydrostatic bearing extending through the ball and having a longitudinal axis coinciding with the longitudinal a... | 12/22/1992 |
| 5137372 | Spherical fluid bearing apparatus The apparatus comprises at least one spherically segmented bearing assembly arranged about the periphery of the device so as to maintain the center of rotation of the device within the assembly coincident with the center of mass of the device. A fluid sou... | 08/11/1992 |
