Clamping device for a holder of a disc playback device
US4739428A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 22, 1986 |
| Grant date | Apr 19, 1988 |
| Priority date | — |
| Expiry date | May 22, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B17/057
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a disc playback device of a type in which a disc or a disc cartridge case housing a disc is loaded in a holder and the disc is played back upon moving of this holder from a disc loading position to a disc playback position, magnetic attraction generating means is provided for attracting the holder and a chassis carrying a turntable to each other. The magnetic attraction generating means may be constructed by securing a magnet to either the chassis or the holder and forming the other with magnetic substance, or may be constructed by securing magnets to both the chassis and the holder. The holder is securely clamped in position when it has been moved to the disc playback position and anti-vibration characteristics of the holder are thereby improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.