Combination probe and ring head for vertical recording
US4897749A · kind A · utility
10Cited by
10References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 16, 1988 |
| Grant date | Jan 30, 1990 |
| Priority date | — |
| Expiry date | Mar 16, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/1278
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A vertically recording write probe and read ring head. A ring pole is mounted adjacent a vertical recording probe pole. The ring pole tip is made thin such that it saturates on write and does not affect performance of the probe pole. The ring pole tip is separated from the probe tip by a small read gap. The probe pole and ring pole are connected in a back gap region so that the combination reads like a conventional read head.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.