Plural magnetic disk assembly
US4743989A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 21, 1986 |
| Grant date | May 10, 1988 |
| Priority date | — |
| Expiry date | Apr 21, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B23/033
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A device and process for stabilizing two coaxially joined flexible magnetic disks is disclosed. Two or more flexible magnetic disks are coaxially joined by a coaxially located spacer. One of the disks is juxtaposed to and rotated against a flat stable Bernoulli surface. A second disk spaced by the spacer from the first disk contains centrally located perforations into which air can flow. When the disks are rotated at high speed air flows into the perforations and radially out from between the disks, thus forming an air cushion or air bearing between the disks. The apparatus and process thus provides two floppy disks stabilized by a single Bernoulli surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.