Cassette tape reel
US4213578A · kind A · utility
11Cited by
6References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 29, 1978 |
| Grant date | Jul 22, 1980 |
| Priority date | — |
| Expiry date | Dec 29, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B15/674
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A cassette tape reel comprising a hub having a cut portion which is narrow at the entrance portion and wide at the inner portion and a tape locking piece having an elliptic section, the cassette tape reel being arranged to fasten the tape by placing the tape in the cut portion of the hub and, then, inserting the tape locking piece to the cut portion and turning it therein, the cassete tape reel being arranged so that the tape is fastened more strongly when a force is applied to the tape.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.