Disk drive with unbalance correcting mechanism
US6477133B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 24, 2000 |
| Grant date | Nov 5, 2002 |
| Priority date | — |
| Expiry date | Jan 19, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B17/0284
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A disk drive is realized, which omits running-in for stabilizing a change in a correcting function produced by sliding between balls and a rolling groove in an unbalance correcting mechanism, and prevents immobility and straying of balls, and which comprises a unit mechanism assembled by using 12 balls subjected to surface treatment with heptadecafluorodecyltrimethoxysilane and a turntable plated with a chemical nickel plating containing phosphorus and boron to have a thickness of 5 &mgr;m and by injecting 1 microliter of ester oil into the rolling groove, and further comprises a recess formed in a sidewall of the rolling groove of the unbalance correcting mechanism to prolong the service life of the correcting function.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.