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| Number | Title | Issue Date |
| 7896551 | Hydrodynamic bearing assemblies, and hydrodynamic bearing apparatuses and motor assemblies using same Hydrodynamic bearing assemblies and apparatuses are disclosed. Such hydrodynamic bearing assemblies may be employed in bearing apparatuses for use in downhole motors of a subterranean drilling system or other mechanical systems. In one embodiment of the present inve... | 03/01/2011 |
| 7832934 | Thrust bearing device A thrust bearing device comprising a runner portion attached to a rotational axis and having a plane perpendicular to the axial direction of the rotational axis, and a fixed portion having a sliding surface facing the plane of the runner portion, wherein the fixed p... | 11/16/2010 |
| 7677805 | Fluid dynamic bearing and hard disk drive employing the same A fluid dynamic bearing is constructed to support stably a rotating body to which a non-uniform force is applied, and a hard disk drive (HDD) employing the fluid dynamic bearing is provided. The fluid dynamic bearing includes a journal bearing part supporting a rota... | 03/16/2010 |
| 7641392 | Hydrodynamic plain bearing A hydrodynamic plain bearing is provided and includes a raceway which is rotatable about an axis of rotation and which is mounted in the axial direction on a plurality of carrying segments (12). A lubricating oil film is formed between the raceway and the car... | 01/05/2010 |
| 7559697 | Dynamic bearing unit A fluid dynamic pressure effect can be sufficient without receiving a large effect of viscous friction of lubricating oil with changes in the environmental temperature in which it is used, and smooth starting of the rotating shaft can be ensured by regulating the ga... | 07/14/2009 |
| 7470064 | Axial thrust bearing An axial thrust bearing for axially supporting a rotating shaft of an exhaust gas turbocharger connected to a lubricating oil circuit includes a profiled annular bearing surface which contacts an essentially flat sliding surface, the bearing surface having a plurali... | 12/30/2008 |
| 7458724 | Pressure biased lubricant valve An exemplary center housing for a turbocharger includes a bore for supporting a turbocharger shaft, a lubricant feed port, a first lubricant outlet port, a second lubricant outlet port and a valve operably disposed to provide a first path from the lubricant feed por... | 12/02/2008 |
| 7435003 | Fluid dynamic bearing unit A flange on a shaft of a fluid dynamic bearing unit is to be provided with a hole connecting an outer periphery of the flange and an outer periphery of the shaft. A radial groove is provided on a surface of two flange half pieces, and a vertical groove communicating... | 10/14/2008 |
| 7422370 | Hydraulic compensation for magnetically biased fluid dynamic bearing motor A fluid dynamic bearing motor including a stationary sleeve, a rotating shaft axially disposed through the sleeve, a journal gap between the shaft and the sleeve, the gap defined by first and second interfacial surfaces of the shaft and sleeve, at least one set of f... | 09/09/2008 |
| 7243626 | Camshaft adjuster A device for changing the control times of an internal combustion engine (camshaft adjuster (1)) having a pressure medium distributor (21) arranged within a camshaft (11) is provided. The pressure medium distributor (21) is provided at it... | 07/17/2007 |
| 7237955 | Hydrodynamic bearing and disc rotation apparatus using the same A high-accuracy, long-life hydrodynamic bearing that does not cause oil film breakage in bearing clearances and a disc rotation apparatus using the bearing is disclosed. Oil film breakage is avoided as negative pressure is prevented from generating between the shaft... | 07/03/2007 |
| 7237956 | Hydrodynamic bearing and disc rotation apparatus using the same A high-accuracy, long-life hydrodynamic bearing that does not cause oil film breakage in bearing clearances and a disc rotation apparatus using the bearing is disclosed. Oil film breakage is avoided as negative pressure is prevented from generating between the shaft... | 07/03/2007 |
| 7189003 | Turbomachine A turbomachine has a rotor shaft, which is mounted in a bearing arrangement containing a hydrodynamic axial bearing, and a rotor disposed on the rotor shaft. A hydrostatic axial bearing is additionally provided in the immediate vicinity of the hydrodynamic axial bea... | 03/13/2007 |
| 7160030 | Hydrodynamic bearing and apparatus for driving polygonal mirror using the same A hydrodynamic bearing having an improved air discharging path for discharging air from the bearing when a shaft is inserted into the bearing, and an apparatus for driving a polygonal mirror using the hydrodynamic bearing. The hydrodynamic bearing includes: a bearin... | 01/09/2007 |
| 7134791 | 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, sup... | 11/14/2006 |
| 7097351 | System of monitoring operating conditions of rotating equipment A monitoring system for rotating equipment includes detection of temperature conditions in various areas of the system including motor and pump bearings, mechanical seal environment including seal flush, seal cooler and seal reservoir and process fluid temperature. ... | 08/29/2006 |
| 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 |
| 7052182 | Hydrostatic gas bearing, hydrostatic gas bearing device for use in vacuum environment, and gas recovering method for the hydrostatic gas bearing device In a hydrostatic gas bearing for use in a vacuum, in order to provide a hydrostatic gas bearing in which an increase in the quantity of gas being discharged during the movement of a moving body is reduced, the surface of a guide shaft of a fixed body and/or the surf... | 05/30/2006 |
| 7037415 | Sensor element of a gas sensor A sensor element of a gas sensor is described, this sensor being used to determine the concentration of at least one component of a gas mixture, in particular in exhaust gases of internal combustion engines. It includes at least two electrodes which are situated in ... | 05/02/2006 |
| 7014367 | Oil-impregnated sintered sliding bearing An oil-impregnated sintered sliding bearing formed of a porous iron-based sintered alloy with quenched structure and receiving a high surface pressure capable of reducing the number of finishing steps by cutting and grinding and providing a bearing performance equiv... | 03/21/2006 |
| 6995955 | Pivot assembly for hard disk drive use An apparatus for a pivot assembly that can strongly and reliably fix a sleeve to an outer ring, and in addition, that can also solve the problem of out gas. Ball bearing 2 are mated to both ends of a shaft 1, and to the outer circumference of these bal... | 02/07/2006 |
| 6982510 | Low profile fluid dynamic bearing The design comprises a shaft and sleeve supported for relative rotation by a journal type fluid dynamic bearing utilizing grooves on one of the shaft or sleeve surfaces. A grooved pattern of a design similar to that usually found on a thrust plate is defined on an a... | 01/03/2006 |
| 6979923 | Motor having dynamic pressure fluid bearing and disc drive apparatus provided with the motor A motor (100) having a dynamic pressure fluid bearing is composed of a hub (2), a rotor (4) provided with a shaft (7) of which one end portion is securely fastened by the hub (2) and another end portion is formed with a flange (... | 12/27/2005 |
| 6976788 | Thrust bearing In a thrust bearing supporting a load in a thrust direction in a rotary portion, a size of a curved surface in the forward side of a lubricating groove with respect to a relative rotating direction of an opposing sliding member is set to be larger than a size of a c... | 12/20/2005 |
| 6966699 | Dynamic pressure bearing device, and manufacturing method and assembly jig thereof It is an object of the present invention to provide a miniaturized, high-precision, easy, and low-cost dynamic pressure bearing device and a manufacturing method thereof. In manufacturing a dynamic pressure bearing device, a first and a second ring-shaped member are... | 11/22/2005 |
| 6962443 | Fluid dynamic pressure bearing apparatus A fluid dynamic pressure bearing apparatus includes a radial dynamic pressure bearing formed in a gap portion between a bearing member and a shaft member. The apparatus also includes a thrust dynamic pressure bearing having a first thrust bearing portion formed betw... | 11/08/2005 |
| 6957917 | Hydrodynamic axial slide bearing for a generator Hydrodynamic plane thrust bearing (26) for a generator (10), preferably operable with a water turbine, with a rotor (12), a track ring (30) rotating with the shaft (20) of the rotor (12), and a bearing segment (32) no... | 10/25/2005 |
| 6945697 | Dynamic gas bearing of a motor spindle comprising aeration The invention relates to a dynamic gas mounting of a motor spindle, with a rotating shaft 2 which is gas-mounted in a housing 3 in the radial and axial direction, at least one radial gas bearing 4 being present for radial mounting along the shaf... | 09/20/2005 |
| 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 |
| 6939048 | Hydrodynamic thrust bearing A hydrodynamic thrust bearing, forming a part of a bearing system for a rotary bearing of spindle motors utilized to power hard disk drives, which includes at least one annular thrust plate and a counter bearing corresponding to the thrust plate. The thrust plate is... | 09/06/2005 |
| 6851862 | Gas lubricated thrust bearing A gas lubricated axial thrust bearing for resisting axial forces acting on a machine rotor, comprises at least one pad mounted on a stationary machine surface and axially spaced from a surface of the rotor by a lubricating gas film. The bearing further includes a te... | 02/08/2005 |
| 6827494 | Diverted flow thrust bearing A hydrodynamic thrust bearing of this invention comprises a body having a load-bearing surface comprising an oil supply channel and an oil return channel positioned along respective inside and outside body diameters. A number of thrust pads are positioned along the ... | 12/07/2004 |
| 6827493 | Turret support system and bearing unit The invention is a bearing unit and bearing system for supporting a large rotatable element, such as a mooring turret. The bearing unit includes a hydrostatic suspension system which enables the bearing unit to accommodate fabrication tolerances and also enables the... | 12/07/2004 |
| 6799891 | Motor device According to the present invention, a cylindrical side wall is provided in a housing so as to surround an outer periphery of a stopper member. Further, an end surface of the side wall is higher than a top surface of outermost periphery of the stopper member. Oil oth... | 10/05/2004 |
| 6789992 | Washer having oil-bearing holes A washer in accordance with the present invention comprises an axial hole and a plurality of oil-bearing portions. The oil-bearing portions are located on an inner surface opposite to an outer surface and surround the axial hole. ... | 09/14/2004 |
| 6729767 | Step bearing for axial support of an open-end spinning rotor To improve the known step bearings for the support of open-end spinning rotors, it is proposed to design the bearing body with a machine-side support and a rest for the spinning rotor. According to the invention, a flat bearing surface constituting one end of the be... | 05/04/2004 |
| 6722992 | Torque limiter and reel mount A torque limiter of the present invention includes: a first rotor and a second rotor, the first and second rotors rotatable about a single center of rotation; a yoke board integrally formed with the first rotor; a magnet which is provided so as to be in contact with... | 04/20/2004 |
| 6694617 | Method of assembling a low cost fluid dynamic bearing motor A method of assembling a motor comprising assembling the shaft and thrust plate to be used in the fluid dynamic bearing assembly, and at least partially inserting the combined shaft and thrust plate into a sleeve which is adapted to support a hub which in... | 02/24/2004 |
| 6663287 | Thrust dynamic pressure bearing apparatus and method for manufacturing the same A thrust dynamic pressure bearing apparatus includes a shaft member and a thrust plate having a fixing hole that is provided with chamfered sections Ca and Cb at the fixing hole. The shaft member is shrink fitted or pressure inserted in the fixing hole of... | 12/16/2003 |
| 6657341 | Device for axial stopping of a rotor, in particular an armature of an electric motor, for balancing machines It is disclosed a device for axial stopping of a rotor, in particular an armature of an electric motor, for balancing machines, the device comprising a thrust unit having an abutment surface (8) adjacent to an end face (4b) of the support shaft (4) of the... | 12/02/2003 |
