Record disk cartridge having eject spring within cartridge
US4185314A · kind A · utility
18Cited by
4References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 2, 1978 |
| Grant date | Jan 22, 1980 |
| Priority date | — |
| Expiry date | Nov 2, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B23/033
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A record disc cartridge has a single internal shutter for opening and closing a head access port adjacent a spindle access member in one wall. A further aperture allows the shutter to be actuated to an open position as the cartridge is moved into a playing position. A spring in the cartridge yieldably biases the shutter to a closed position. When the shutter is open, the spring in the cartridge is cocked to eject the cartridge from a player. Upon release, the spring acts to eject the cartridge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.