Strong magnetic thrust force type actuator
US5010262A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 18, 1989 |
| Grant date | Apr 23, 1991 |
| Priority date | — |
| Expiry date | Jul 18, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K2213/03
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A strong magnetic thrust force type actuator includes a first type of actuator, the permanent magnets of which are inserted between plate members of the primary magnetic member. When a coil disposed upon the primary magnetic member is energized magnetic flux flows from a facing portion formed with a secondary magnetic member to one of the plate members, and then, to an adjacent plate member through one of the permanent magnets. Within this adjacent plate member, additional magnetic flux flows therein from another adjacent plate member through another permanent magnet. In a second type of actuator, the permanent magnets of which are inserted between side surfaces of facing portions formed with the secondary magnetic member, a magnetic flux flows from a facing portion formed with the primary magnetic member to a facing portion of the secondary magnetic member, and then, to an adjacent facing portion through of the secondary magnetic member through means of a permanent magnet, and within this adjacent facing portion, additional magnetic flux flows from another adjacent facing portion through means of another permanent magnet. Thus, as long as the pulse current flows within the coils w…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.