Head with an air bearing surface having a particle fence separated from a leading pad by a continuous moat
US8199437B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 9, 2010 |
| Grant date | Jun 12, 2012 |
| Priority date | — |
| Expiry date | Oct 12, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/6082
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A novel head includes an air bearing surface having a trailing pad adjacent the read transducer and lying in a primary plane. The air bearing surface includes a sub-ambient pressure cavity recessed from the primary plane by at least 500 nm. At least one leading pad is disposed upstream of the sub-ambient pressure cavity and has a leading pad surface in the primary plane. A moat is disposed upstream of the leading pad and is recessed from the primary plane by at least 500 nm. The moat continuously spans the entire width of the slider. A particle fence in the primary plane is disposed immediately upstream of the moat and adjacent the leading face. The particle fence continuously laterally spans at least 70% of the width of the slider.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.