Voice coil for disk drive
US6982503B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 26, 2000 |
| Grant date | Jan 3, 2006 |
| Priority date | — |
| Expiry date | Jun 29, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K41/0358
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A voice coil for a disk drive includes a spiral formation of winding of an electrically conductive material. This formation has a generally triangular shape with an open center. First and second active leg portions of the formation curve inward of it, and an inactive leg portion curves outward of it. The cross-sectional area of the coil varies along its length with the segments in the inactive leg portion having a smaller cross-sectional area than those of the active leg portions. The voice coil is a laminate with the conductive layer disposed between two electrically insulating layers. It lies fixedly secured to a surface of a base member of the disk drive's actuator. The method of making this laminate includes securing the conductive layer to an insulating layer, removing selected portions of the conductive layer to form the coil, and covering the conductive layer with another insulating layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.