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| Number | Title | Issue Date |
| 7779954 | Apparatus to immobilize an internal combustion engine motor vehicle A readily transportable and rapidly deployable vehicle immobilization device is provided. The exhaust of an internal combustion engine is obstructed, resulting in choking off and stopping of the engine. In an aspect, a plug is provided having an extension fixed to t... | 08/24/2010 |
| 7592079 | Method to improve remanence-squareness-thickness-product and coercivity profiles in magnetic media A magnetic disk for information storage that includes a substrate and an information layer for containing information. The information layer includes a upper (e.g., recording) and lower (e.g., stabilizing) layers. The information layer has a remanence-squareness-thi... | 09/22/2009 |
| 7540664 | 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 o... | 06/02/2009 |
| 7451851 | Method and apparatus to immobilize an internal combustion engine motor vehicle A readily transportable and rapidly deployed vehicle immobilization device is provided. The exhaust of an internal combustion engine is obstructed, resulting in choking off and stopping of the engine. In an aspect, a plug is provided having an extension fixed to the... | 11/18/2008 |
| 7407327 | Method and system for withstanding shock in a spindle motor bearing A system, method and means is provided for withstanding mechanical shock for use with fluid dynamic bearings. A sealing system is provided that withstands 1000 G shock events. In an aspect, a grooved pumping seal employed between a thrust plate and a shield, a thrus... | 08/05/2008 |
| 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 |
| 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 |
| 7144482 | Method and apparatus for forming grooves within journals and on flat plates An apparatus, method and means is provided for electrochemical machining of hydrodynamic bearing assemblies in spindle motors. In an aspect, a cartridge is provided that receives and accurately positions an electrode in three dimensions in a near frictionless manner... | 12/05/2006 |
| 7135797 | Fluid dynamic bearing with wear resilient surface A system and means is provided for preserving bearing surfaces and maintaining bearing life, for use with spindle motors. In an aspect, adhesive and abrasive wear is minimized, corrosion is reduced, and bearing dynamic performance and fluid purity is maintained. In ... | 11/14/2006 |
| 7133250 | Inboard thrust surface fluid recirculation pump An inboard thrust surface is provided for a spindle motor that maintains fluid flow through a journal bearing and generates an added offset pressure to avoid any subambient pressure within a journal. In an aspect, journal bearing asymmetry is minimized or eliminated... | 11/07/2006 |
| 7122922 | Base plate for spindle motor A base plate for a spindle motor is provided defining a minimal axial gap with a relatively rotatable magnet. In an example, a surface of the base plate is positioned at 0.1 mm from an adjacent surface of a relatively rotatable magnet. The base plate is comprised of... | 10/17/2006 |
| 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 |
| 7056024 | Through hub oil fill and vent for a fluid dynamic bearing motor A through hub fill hole and air vent having an enlarged fluid diffusion path is provided for spindle motors. Oil leakage and evaporation from a motor is reduced. In an aspect, oil is retained under conditions of at least a 1000 G shock event. In an aspect, the hub f... | 06/06/2006 |
| 6961214 | Refinement of spindle motor bearing gap A method and system is provided for achieving good dynamic performance and negligible wear to spindle motor components. In an aspect, a disc drive storage system is provided having a hydro bearing surface coating for meeting bearing gap tolerance design specificatio... | 11/01/2005 |
| 6921993 | Geometrically aligning a stator and a base plate for a spindle motor Stator and base plate interface alignment is provided for a spindle motor, meeting design specifications such that motor performance is maintained. A portion of a surface of the stator is separated from the base plate. Accurate stator z-height, parallelism and conce... | 07/26/2005 |
