Suspension arm actuator for a scanning device including a magnet for field optimization
US8392937B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 7, 2008 |
| Grant date | Mar 5, 2013 |
| Priority date | — |
| Expiry date | Jan 4, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/093
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A suspension arm actuator for a scanning device includes a suspension arm which is designed as a two-arm lever having a first and second arms. The second lever arm includes a component for a magnetic drive for a swivel motion of the suspension arm. The component is arranged at a recess having the shape of a circular arc, with an inner leg of a yoke being permanently attached to a support projecting into the recess and forming a magnetic yoke, wherein the yoke is provided with a shell-like magnet on its outer leg in order to form the magnetic drive. A magnet for field optimization, which is magnetized perpendicularly in relation to the shell-like magnet, is arranged on the yoke in the region between the inner leg and the shell-like magnet to increase the sensitivity of the suspension arm actuator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.