Linear actuator with moving central coil and permanent side magnets
US9748823B2 · kind B2 · utility
6Cited by
44References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 25, 2013 |
| Grant date | Aug 29, 2017 |
| Priority date | — |
| Expiry date | Jul 26, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49009
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A linear actuator, comprising a base housing, a top housing, and a piston assembly. The base housing may include at least one recess configured to restrain at least one magnet in three dimensions and a channel configured to receive a linear guide. The top housing may be fixedly attached to the base housing and may include at least one recess configured to restrain another at least one magnet in three dimensions. The piston assembly may include at least one coil bobbin, a shaft, a linear encoder scale, and a flex cable, wherein the piston assembly may be positioned between the base housing and the top housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.