Linear actuator of small size
US6548921B2 · kind B2 · utility
2Cited by
4References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 6, 2001 |
| Grant date | Apr 15, 2003 |
| Priority date | — |
| Expiry date | Jun 6, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K41/0356
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A linear actuator includes a supporting unit with a stopper, a linear output unit, a movable unit, a magnetic flux generating unit and a control unit. The movable unit is connected to a stopper of the outer pipe at one end of the outer movable unit and to the linear output unit at the other end. The magnetic flux generating unit generates first magnetic fluxes. The movable unit has elasticity, and expands or contracts based on action of the first magnetic fluxes and the elasticity. The linear output unit linearly moves in response to the expansion or contraction of the movable unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.