Balance tube for a spindle motor assembly of a hard disk drive
US6178062A · kind A · utility
11Cited by
4References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 17, 1998 |
| Grant date | Jan 23, 2001 |
| Priority date | — |
| Expiry date | Jul 17, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B19/2027
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A spindle motor assembly for a hard disk drive which has a fluid filled tube that dynamically balances the spindle motor. The assembly may include a hub which is rotated by an internal motor. A plurality of disks may be coupled to the hub and separated by a number of spacers. In one embodiment, the fluid filled tube is attached to the hub. In another embodiment, the fluid filled tube is attached to the spacer. The fluid within the tube is allowed to move during rotation of the hub. Movement of the fluid may dynamically balance the spindle motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.