Magnetic head having a controllable high-permeability tunnel within a low-permeability sleeve
US4322763A · kind A · utility
8Cited by
2References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 5, 1980 |
| Grant date | Mar 30, 1982 |
| Priority date | — |
| Expiry date | Mar 5, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B15/14
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic record and/or reproduce head, comprised of electrically conductive magnetic core material, has an electrically conductive transducer gap having a magnetic gap length of less than about 15 microinches. The head is selectively actuable by passing a current through the core material via the gap.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.