Disc player having means for preventing disc magazine from being inserted upsidedown
US5014258A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 15, 1989 |
| Grant date | May 7, 1991 |
| Priority date | — |
| Expiry date | Jun 15, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B17/30
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A multi-disc player having means for preventing a disc magazine from being inserted upsidedown. The disc player includes a magazine holder, means for taking a disc tray out of a magazine accommodated in the holder, a turntable, a disc clamper and playback means. The magazine has a front face formed with a surface at one portion and formed with a stepped portion at another portion. The preventing means includes a magazine ejector arm pivotally supported on the magazine holder, and a biasing spring for urging the ejector arm in a direction to eject the magazine out of the magazine holder. If the magazine ejector arm is in contact with the surface, the ejector arm can be fully pivotted because of manual pushing force applied to the magazine. However, if the magazine ejector arm is in contact with the stepped portion due to the insertion of the magazine upsidedown, the ejector arm is lockingly engaged with the stepped portion to terminate its pivotal motion prior to reaching its fully pivotted position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.