Magnetic disc memory unit
US4791508A · kind A · utility
6Cited by
10References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 14, 1987 |
| Grant date | Dec 13, 1988 |
| Priority date | — |
| Expiry date | Sep 14, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B33/1493
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic disc memory unit is presented wherein a pair of read/write heads are attached to and driven by a continuous belt driven by a stepper motor. The read/write heads move linearly, and they retract to a landing position fully off the disc when the unit is shut down. The heads carriage structure is counterbalanced by a counterbalance assembly to allow operation at all altitudes and minimize vibration and shock problems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.