Magnetic tape recorders
US4310863A · kind A · utility
19Cited by
5References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 4, 1979 |
| Grant date | Jan 12, 1982 |
| Priority date | — |
| Expiry date | May 4, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B15/43
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a magnetic-tape recorder, tension rollers positioned before and after the tape heads in the tape path have an outer layer of a polyurethane elastomer to absorb vibration of the tape and reduce flutter. Grooves in the elastomer layer enable the effective resilience of the elastomer to be reduced below the bulk value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.