Tape cassettes having bottom grooves for use in tape recorder having bottom projection in cassette holder
US4803575A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 10, 1987 |
| Grant date | Feb 7, 1989 |
| Priority date | — |
| Expiry date | Apr 10, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B23/08785
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An improved standard size video cassette has a top shell and a bottom shell held together so as to define a rectangular casing for storing therein a magnetic tape wound on reels. The bottom shell is formed with a groove having a width sufficiently wide to receive the projection therein with hardly any contact during cassette insertion into or ejection from the holder. An improved reduced size video cassette has a top shell and a bottom shell held together so as to define a rectangular casing for storing therein a magnetic tape wound on reels. The bottom shell is formed with the groove which is located such that a distance between the center of the groove and one end of the rectangular casing is slightly smaller than the distance between a center of the projection and one of the opposite side plates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.