Hub for winding magnetic tapes
US5707025A · kind A · utility
1Cited by
5References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 31, 1996 |
| Grant date | Jan 13, 1998 |
| Priority date | — |
| Expiry date | Jul 31, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H75/10
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A cylindrical hub for winding web-like or tape-like magnetic recording media of relatively great length. With a winding tension of not more than 2N/cm width of the wound magnetic recording medium, the skew measured over the total length of the wound recording medium should be not more than 5 .mu.s. The length of the wound recording medium is at least 5,000 m; the hub may consist, for example, of aluminum, steel or hard pertinax. It was found that the conditions are fulfilled by a hub in which the compression is less than 0.3% of the hub diameter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.