Electric actuator for a marine steering system
US9944377B2 · kind B2 · utility
8Cited by
20References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 8, 2015 |
| Grant date | Apr 17, 2018 |
| Priority date | — |
| Expiry date | Jul 8, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K11/215
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An electric actuator comprises a housing and an output shaft reciprocatingly received by the housing. There is a screw assembly disposed within the housing and coupled to the output shaft. The screw assembly includes a plurality of annular rollers and a central screw received by the annular rollers. The annular rollers are rotatable about the central screw. There is a motor which includes a stator and a rotor. The rotor has an inner bore which engages the annular rollers. Rotation of the rotor causes the central screw to translate axially relative to the rotor and the output shaft to reciprocate relative to the housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.