Magnetic tape cassette having protrusions of low friction resin
US5229906A · kind A · utility
2Cited by
8References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 4, 1992 |
| Grant date | Jul 20, 1993 |
| Priority date | — |
| Expiry date | Aug 4, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B23/113
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic tape cassette in which protrusions made of low friction resin are formed on the inner walls of the upper and lower halves by a two-color molding method in such a manner that they are located in correspondence at least to the magnetic tape winding diameter so as to be in contact with the edges of the magnetic tape. The protrusions of low friction resin replace the friction sheets in the conventional magnetic tape cassette, whereby the number of components and the number of manufacturing steps are reduced, with the result that the manufacturing cost is also reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.