Disk drive
US4453188A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 10, 1981 |
| Grant date | Jun 5, 1984 |
| Priority date | — |
| Expiry date | Apr 10, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B19/02
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A floppy disk drive including a pivotally mounted disk pack storing a plurality of floppy diskettes, a driver mechanism for rotating any one of the diskettes into a retrievable position, a picker mechanism for moving the one diskette between the retrievable position and an operative position at which the diskette is rotatable on a spindle, and a position control circuit for controlling the position of a recording head across the one diskette being in the operative position and for compensating for expansion, contraction, and eccentric rotation of the one diskette. The floppy diskettes are stored bent in the disk pack, but in the operative position the one diskette that had been retrieved from the retrievable position is stored only partially in the disk pack and parallel to the plane of rotation. A microprocessor controls the entire disk drive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.