Device for opening and closing a shutter member of a disk cartridge
US4688206A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 10, 1986 |
| Grant date | Aug 18, 1987 |
| Priority date | — |
| Expiry date | Sep 10, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B23/0308
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A device is provided for opening and closing a shutter member of a disk cartridge containing a disk in a cartridge housing and adapted for insertion into a signal recording and/or reproducing apparatus that uses the disk as a magnetic recording medium. The cartridge housing has signal read and write apertures in its upper and lower walls. The shutter member is mounted so as to partially cover a front wall and the upper wall and lower wall of the cartridge housing for opening and closing the apertures, and has an engaging opening exposing the front and lower walls. The device includes a pair of opening and closing elements mounted on the signal recording and/or reproducing apparatus so as to be in the path of insertion of the disk cartridge. The elements are provided with engaging portions adapted for selectively engaging in the engaging opening of the shutter member and for being rotated when thrust by the disk cartridge. The opening and closing elements are so designed that their engaging portions strike each other to inhibit insertion of the disk cartridge when the latter is inserted with a reversed orientation so that its rear side opposes the opening and closing elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.