Magnetic disk
US5249093A · kind A · utility
4Cited by
7References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 11, 1991 |
| Grant date | Sep 28, 1993 |
| Priority date | — |
| Expiry date | Jun 11, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/825
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic disk comprises an annular resilient magnetic recording mediumm, an outer ring having an outer affixing surface, and an annular frame disposed radially inwardly of the outer ring. The annular frame comprises an annular thrusting surface protruded axially for thrusting the recording medium to exert tension to it, an inner affixing surface inwardly affixed to the recording medium, and a base axially receded from the thrusting surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.