Disk drive head suspension with dual piezoelectric elements adhered to rotary-actuated and non-actuated portions of a structural layer of a tongue of a laminated flexure
US8982513B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 28, 2013 |
| Grant date | Mar 17, 2015 |
| Priority date | — |
| Expiry date | Jun 28, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/483
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A disk drive head gimbal assembly includes a laminated flexure with a tongue having an actuated portion that rotates about an axis of rotation by expansion of a first adhered piezoelectric element relative to a second adhered piezoelectric element. A non-actuated portion of the tongue adjoins and forms a bridge between two outrigger beams, with a dimple contact location that is in contact with a dimple of the load beam and through which the axis of rotation passes. A read head is adhered, closer to its leading end than to its trailing end, to the actuated portion of the tongue. Each of the first and second piezoelectric elements has an anchored end that is adhered to the bridge, closer to the trailing end of the read head, and an opposing actuated end adhered to the actuated portion of the tongue, closer to the leading end of the read head.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.