Drive unit for optical memory device with portion of drive means mounted outside a sealing means
US5301178A · kind A · utility
42Cited by
6References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 19, 1991 |
| Grant date | Apr 5, 1994 |
| Priority date | — |
| Expiry date | Feb 19, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B33/1446
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A drive unit for use in an optical memory unit has a front panel, a drive mechanism, and sealing members. The front panel has an air vent and a slot for allowing passage of a cassette case containing a disk-shaped recording medium. The drive mechanism loads the cassette case through the slot and drive the recording medium in a specified direction in order to record and reproduce information on and from the recording medium. The sealing members seals the drive mechanism nearly completely, in order to prevent migration of the outside air into the drive mechanism as the air is introduced via the air vent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.