Integrated hydrodynamic bearing/motor assembly
US5448120A · kind A · utility
43Cited by
14References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 10, 1994 |
| Grant date | Sep 5, 1995 |
| Priority date | — |
| Expiry date | Mar 10, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B19/2009
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A spindle and hub assembly in a disk drive having an integrated motor including a housing having a cylindrical sleeve and two end flanges, the cylindrical sleeve and the upper end flange being one piece and forming the hub and the lower end flange being pressed into the hub and a shaft being rotatably supported in the end flanges by means of hydrodynamic bearings, where the hydrodynamic bearings have conical bearing surfaces converging towards the interior of the housing, whereby a high precision and low cost spindle and hub assembly is provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.