Manufacture of motor with split back magnet array
US4587714A · kind A · utility
4Cited by
4References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 3, 1984 |
| Grant date | May 13, 1986 |
| Priority date | — |
| Expiry date | Jan 3, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49075
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A disc drive arrangement including RW head actuator driven by an improved voice coil motor, having ceramic back-magnets which are subdivided to give improved magnetic characteristics and operation (increased working flux and an increase in efficiency and effective power acceleration for given current--e.g., thus decreasing "access time").
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.