High density disc drive with magnetic clutch for use with a sealed removable cartridge
US4974103A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 14, 1988 |
| Grant date | Nov 27, 1990 |
| Priority date | — |
| Expiry date | Nov 14, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B25/043
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A disc drive 20 including a spindle motor assembly 42 having a magnetic clutch plate 46 and an actuator 47 receives a hermetically sealed cartridge 22 containing a plurality of discs 72, 74 with associated heads 80, 81 mounted in the cartridge 22. Associated with an arm assembly 84 which supports heads 80, 81 is a component 50 for use with the actuator 47. With the cartridge 22 inserted in the drive 20, the actuator 47 operates to cause the heads 80, 81 to traverse relative to the discs 72, 74 as the spindle motor assembly 42 uses a magnetic field to engage a magnetic plate 77 associated with cartridge 22 in order to spin the discs 72, 74. Data transfer connectors 52, 54 are associated with both the drive 20 and the cartridge 22 in order to allow for the transfer of data between the cartridge 22 and the drive 20.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.