Rotary head drum assembly with upper, lower and inner drums with cylindrical surfaces of differing outward radial position
US6411465B1 · kind B1 · utility
2Cited by
6References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 20, 2000 |
| Grant date | Jun 25, 2002 |
| Priority date | — |
| Expiry date | Mar 20, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B15/62
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A rotary head in which the tape running load is decreased by setting the tape path cylindrical surface of an upper drum (12) in a range of winding of a tape (31) at an inner side relative to the tape path cylindrical surface of a lower drum (11). Alternatively, the tape path cylindrical surface of an inner drum (13) in a range of winding of the tape (31) is positioned at an outer side relative to the tape path cylindrical surface of the upper or lower drum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.