Disc clamp for a disc drive
US6567238B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 12, 2000 |
| Grant date | May 20, 2003 |
| Priority date | — |
| Expiry date | Dec 2, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B17/038
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus and method for uniformly centering and retaining an information storage disc on a spindle motor. A disc drive spindle motor assembly including a rotatable motor spindle having a top portion and a hub portion, and an annular disc mounted over the top portion and supported on the hub portion. The assembly further includes an annular disc clamp mounted over the top portion of the spindle, and having a centering portion and a peripheral clamping portion. A disc clamp retainer is fastened to the spindle applying a compressive force to the disc clamp to secure the disc against the hub portion. The centering portion of the disc clamp has a series of spaced centering tabs adapted to abut the spindle and symmetrically push against the annular disc when the compressive force is applied to the disc clamp.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.