Miniaturized disk file pluggable into a card terminal
US5251082A · kind A · utility
Inventors
Key dates
| Filing date | Jun 13, 1991 |
| Grant date | Oct 5, 1993 |
| Priority date | — |
| Expiry date | Jun 13, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S360/903
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A disk/file for magnetic recording having overall dimensions of one quarter inch thick by about the size of a standard credit card with pin connectors for connecting into a receptacle such as for pc boards. The file features a rotor mounted on the rims of two disk and a stator external to and coplanar with the disks. An actuator features a "wobble" disk rolling around the inside of a nest of electromagnets and turning a small increment with each excursion around the nest thereby turning the shaft of the head support to actuate the head from track to track. The head support arm includes two sections hinged together and engaged with a third link that orients the head to eliminate head skew. A magnet withdraws the head devices from the disk surface to avoid sticktion when the disks are stationary. The head devices feature thin film cores that are oriented flat to the surface of the disk.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.