Record/playback head and data storage apparatus therefor
US4195322A · kind A · utility
6Cited by
5References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 1, 1978 |
| Grant date | Mar 25, 1980 |
| Priority date | — |
| Expiry date | Sep 1, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B21/16
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a recorder having a transducer with a gap which coacts with a flexible medium to record and/or reproduce data, an endless groove is positioned on the transducer to circumscribe the gap.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.