Disc cartridge having positive isolation means when in storage
US4692831A · kind A · utility
22Cited by
6References
26Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 10, 1985 |
| Grant date | Sep 8, 1987 |
| Priority date | — |
| Expiry date | Sep 10, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B23/0321
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An improved disc cartridge (1) is disclosed, which comprises a case assembly (4) and an information recording disc (5) flatly rotatably housed in the case assembly. A disc holding mechanism is arranged in the disc cartridge in such a manner that when the disc cartridge is not in use, the mechanism holds the disc keeping the same away from the inner periphery of the case assembly, and when the disc cartridge is in use, the mechanism releases the disc completely for free rotation of the same.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.