Stacked arms assembled in a head disk assembly
US5731934A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 10, 1997 |
| Grant date | Mar 24, 1998 |
| Priority date | — |
| Expiry date | Apr 10, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B21/00
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A head disk assembly ("HDA") comprises an enclosure including a base and a pivot bearing cartridge having a shaft and a outer shell rotatable about the shaft. The outer shell has a cylindrical surface. The shaft is affixed to the base at a predetermined location. The enclosure has an internal volume with a limited height above the predetermined location. The cartridge has an elongated portion in the volume, the elongated portion having a height approximately equal to the limited height. The HDA further comprises a plurality of rotating disks, each having at least one recording surface. The HDA further comprises an arm stack comprising a plurality of arms, and a plurality of head gimbal assemblies. Each arm has a stacking portion and a cantilever portion. Each head gimbal assembly has one end attached to the cantilever portion of a respective arm and has an opposite end positioned adjacent a recording surface. Each stacking portion includes a first spring element and a second spring element, the spring elements being positioned to define a generally C-shaped bearing surface, the first spring element including a first compression-receiving surface and the second spring element includ…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.