Title:
APPARATUS AND METHOD FOR OPTIMIZING HYDRODYNAMIC GROOVE SHAPE
Document Type and Number:
WIPO Patent Application WO2003054873
Kind Code:
A3
Abstract:
Embodiments of the invention generally provide a method for optimizing the performance of a hydrodynamic bearing used with a disc drive. In one embodiment, the invention provides a method to determine a range of dimension values associated with at least one hydrodynamic groove disposed on the hydrodynamic bearing to improve at least one or more hydrodynamic bearing performance factors. In another embodiment, the invention provides a hydrodynamic bearing having at least one cross-section dimension associated with an optimum radial stiffness for at least one hydrodynamic groove shape. In another embodiment, the invention provides a hydrodynamic bearing having at least one groove pitch ratio associated with an optimum radial stiffness for at least one hydrodynamic groove shape.
Inventors:
RAHMAN MOHAMED MIZANUR
Application Number:
PCT/US2002/040784
Publication Date:
November 13, 2003
Filing Date:
December 20, 2002
Export Citation:
Assignee:
SEAGATE TECHNOLOGY LLC (US)
International Classes:
F16C33/10; G11B19/20; (IPC1-7): G11B17/00
Foreign References:
| US5908247A | 1999-06-01 | |||
| US6296390B1 | 2001-10-02 | |||
| US5678929A | 1997-10-21 | |||
| US5328270A | 1994-07-12 | |||
| US6296391B1 | 2001-10-02 | |||
| US5716141A | 1998-02-10 | |||
| US5847479A | 1998-12-08 | |||
| US4132414A | 1979-01-02 |
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