Magnetic tape cassette
US7014136B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 6, 2000 |
| Grant date | Mar 21, 2006 |
| Priority date | — |
| Expiry date | Dec 18, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B25/066
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
The present invention aims to prevent damages of a magnetic tape in a magnetic tape cassette adapted to be operated in a recording and reproducing apparatus which can similarly operate a plurality of magnetic tape cassettes.More specifically, in the invention, differences (A1−B1, A2−B2) between heights A1, A2 of radially inner portions (32a), (42a) of lower flanges (32), (42) and heights B1, B2 of ribs (35a), (45a) of lower halves (35), (45) for restricting a height of the magnetic tape are equal (A1−B1=A2−B2) in a plurality of the magnetic tape cassettes which have the same vertical sizes and different sizes in a horizontal direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.