Single-piece yoke damper for voice coil actuator
US9177579B2 · kind B2 · utility
0Cited by
19References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 15, 2013 |
| Grant date | Nov 3, 2015 |
| Priority date | — |
| Expiry date | Dec 13, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K41/0358
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Approaches to improving actuator settle time by damping vibrations resulting from coil modes, such as with a voice coil actuator in a hard disk drive, include a single-piece damper plate coupled to the voice coil actuator yoke. The damper plate may be a single U-shaped piece of metal that covers the area of the yoke that experiences the maximum strain energy during operation, between the voice coil and the pivot bearing housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.