High-flow electro-hydraulic actuator
US10487856B2 · kind B2 · utility
6Cited by
21References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 20, 2015 |
| Grant date | Nov 26, 2019 |
| Priority date | — |
| Expiry date | Oct 18, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86863
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Embodiments of the invention provide a high-reliability, cost-effective electro-hydraulic servo-valve assembly that is not susceptible to failure caused by contaminated fluid. In particular embodiments, the electro-hydraulic servo-valve assembly includes a rotary valve that may be actuated by either a direct-coupled Limited Angle Torque (LAT) motor, a geared, brushless DC motor, or some other rotary electric actuating element with an integrated driver circuit. In particular embodiments, the rotary valve element made up of an outer sleeve element and an inner spool element, with matching ports and slots, respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.