Magnetic latching for a disc drive
US6381103B1 · kind B1 · utility
8Cited by
8References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 30, 1999 |
| Grant date | Apr 30, 2002 |
| Priority date | — |
| Expiry date | Dec 30, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B21/12
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A latching method and a latch for a voice coil motor in a disc drive. The latch has a hub and a latch surface. The latch surface has a rotational latching range in which the latch surface latches the voice coil motor. A first magnetic detent is coupled to the hub and is active when the latch surface is in a first rotational segment in the latching range. A second magnetic detent couples to the hub and is active when the latch surface is in an offset second rotational segment in the latching range. The offset shapes detent torque over the latching range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.