Storage cases for information recording devices
US4863026A · kind A · utility
Inventor
Key dates
| Filing date | May 13, 1988 |
| Grant date | Sep 5, 1989 |
| Priority date | — |
| Expiry date | May 13, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B33/0427
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A storage case for an information recording device and an accompanying program including printed or otherwise recorded graphical subject matter, such as a printed program booklet or optically transparent film structure. The storage case comprises an enclosing case for enclosing and storing the information recording device and the program substantially therewithin. The enclosing case has at least one optically transparent panel with a Fresnel lens zone structure formed therein. The enclosing case provides for the positioning of the graphical subject matter of the program, a range of distances from the optically transparent panel and is intended for the viewing of the graphical subject matter through the optically transparent panel, whereby the graphical subject matter is magnified when viewed through the Fresnel lens zone structure formed in the optically transparent panel. The storage case of the present invention is for storing a digital audio-cassette tape (DAT), an analog audio-cassette tape compact disc (CD), or a video-cassette tape, and in the preferred embodiment includes spaced-apart guide channels disposed on the storage case for slideably holding the accompanying program,…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.