High-flow electro-hydraulic actuator
US9127694B2 · kind B2 · utility
10Cited by
18References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 29, 2012 |
| Grant date | Sep 8, 2015 |
| Priority date | — |
| Expiry date | Oct 23, 2032 |
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.