Air bearing slider with variable sub-ambient pressure control
US5677812A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 26, 1996 |
| Grant date | Oct 14, 1997 |
| Priority date | — |
| Expiry date | Jan 26, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/6005
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An air bearing slider that maintains a relatively uniform flying height during variations in air speed and the skew of the slider. The slider has a raised rail disposed along the bottom surface of the slider body that forms a cavity. The cavity is configured to produce a subambient pressure when an air flow passes across the slider. The rail possesses a plurality of air bearing surfaces and has an opening positioned along the inner side of the slider. The opening is positioned and sized to provide a variable air flow into the cavity as the skew angle between the longitudinal axis of the slider and the direction of air flow changes. In this manner, a variable subambient pressure is developed within the cavity as the slider moves radially along the surface of a disk.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.