Apparatus for driving a floppy disc
US4620249A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 19, 1982 |
| Grant date | Oct 28, 1986 |
| Priority date | — |
| Expiry date | Apr 19, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B19/10
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus for driving a floppy disc includes a first sensor responsive to a magnetic disc encased in a jacket of the floppy disc. Before the magnetic disc is gripper in a predetermined position, a d.c. motor included in a disc rotating mechanism is started in order to prevent rush current therethrough. After the start of the d.c. motor, a second sensor senses a return of the magnetic disc to a predetermined regular position whereupon a cone load drive source is activated to automatically move a cone toward a drive hub. Thus, the magnetic disc can be gripped and set in the regular position merely by inserting it into the apparatus. The apparatus also includes ejection apparatus for ejecting the floppy disc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.