Apparatus, method of manufacturing and method of using a linear actuator
US7040481B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 8, 2002 |
| Grant date | May 9, 2006 |
| Priority date | — |
| Expiry date | Mar 18, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K41/03
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A linear actuator, method of manufacturing and method of using the linear actuator are provided. The invention includes a linear actuator having a plurality of annular magnets surrounded by a bobbin assembly having a coil system. The plurality of annular magnets can be arranged with alternating polarity. The bobbin assembly can be movable along a longitudinal axis extending through the plurality of annular magnets and can further comprise a coil system having coils arranged to, when energized, interact with at least one of the plurality of annular magnets to move the bobbin in a linear mode. Thus, by selectively energizing one or more of the coils, a motive force can be generated on the bobbin assembly by interacting with fields generated by the plurality of annular magnets.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.