Head having a transducer heater and an air bearing surface with a flow-diversion dam and pressure-relief trough disposed upstream of the transducer
US7719795B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 15, 2006 |
| Grant date | May 18, 2010 |
| Priority date | — |
| Expiry date | Sep 13, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/6082
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A head for use in an information storage device includes a novel ABS, and a transducer with a heating element. The ABS includes a transducer pad that includes a surface in a first plane. The ABS also includes a pressure-relief trough that is recessed from the first plane by at least 0.1 microns and has an upstream breadth of no more than one fourth of the total length of the slider. The pressure-relief trough is disposed immediately upstream of the transducer pad and continuously spans the total width of the transducer pad. The ABS also includes a flow-diversion dam that has a dam surface that lies in the first plane. The dam surface continuously spans the total width of the transducer pad. The dam surface is disposed immediately upstream of the pressure-relief trough and generally downstream of a sub-ambient pressure cavity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.