Rotary actuator for magnetic recording
US5113099A · kind A · utility
7Cited by
4References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 16, 1991 |
| Grant date | May 12, 1992 |
| Priority date | — |
| Expiry date | Jul 16, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K41/0358
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An improved actuator support structure includes a centerpole member having an opening or void disposed at a middle region. The opening improves the rise time of the actuator without diminishing the flux density within the centerpole member. Additional openings are disposed in the centerpole member along opposite sides of the first opening. These additional openings are calculated to optimize the flux density within the centerpole member by slightly restricting the area of the centerpole where the magnetic flux flows.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.