Bernoulli effect transducer coupler
US4975794A · kind A · utility
14Cited by
3References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 27, 1989 |
| Grant date | Dec 4, 1990 |
| Priority date | — |
| Expiry date | Mar 27, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B17/32
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic head assembly having a flat surface for disposition adjacent to a recording medium and a protrustion in the range of about 1 to about 20 micro-inches on the flat surface effects coupling of the head assembly to the recording medium and creates a constant contact zone, surrounding the read/write gap of the head assembly, between the head assembly and the record medium. The preferred range for the protrusion is about 6 to about 8 micro-inches and the area of the flat surface is preferably in the range of about 3 to about 4 square millimeters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.