Method for forming a disc stack assembly
US6807721B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 24, 2001 |
| Grant date | Oct 26, 2004 |
| Priority date | — |
| Expiry date | Mar 26, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/4984
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for forming a disc stack assembly suitable for use in a disc drive. A number of discs are loaded onto a spindle motor hub and a disc clamp assembly is installed to secure the discs to the hub. The disc clamp assembly includes an annular retaining ring and a substantially planar, disc shaped clamp plate. The annular retaining ring is secured within an annular ring recess of the spindle motor hub and deforms the clamp plate so that the clamp plate applies an axially directed clamping force to the discs. The disc clamp includes an annular hat flange. The disc stack assembly is preferably balanced by selectively removing material from the hat flange or by attaching a balance weight to the hat flange.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.