Disk spindle motor cap
US5155640A · kind A · utility
2Cited by
9References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 3, 1990 |
| Grant date | Oct 13, 1992 |
| Priority date | — |
| Expiry date | May 3, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K5/124
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention is a disk spindle motor cap. By affixing the cap to the cylindrical shaft of a disk drive, the amount of magnetic ferrofluid escaping from the well between the hub and the cylindrical shaft of the disk spindle assembly is reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.