Hydraulic valve, a hybrid helicopter provided with such a hydraulic valve, and a method implemented by the hydraulic valve
US8376269B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 1, 2009 |
| Grant date | Feb 19, 2013 |
| Priority date | — |
| Expiry date | Apr 29, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/0318
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A hydraulic valve assembly includes a hydraulic valve, a control rod configured to be moved in translation along a first longitudinal axis by flight controls of an aircraft, a servocontrol, and an outlet rod configured to be moved in translation along a second longitudinal axis and configured to transfer a hydraulic fluid between the servocontrol and the hydraulic valve. A blocker device is configured to block a movement of the control rod when a difference between a first movement of the control rod and a second movement of the outlet rod exceeds a predetermined threshold and includes at least one moveable abutment configured to block the movement of the control rod when the predetermined threshold is reached and configured to move in longitudinal translation with the outlet rod, and a differential lever configured to mechanically link the control rod to the outlet rod and to cooperate with the at least one moveable abutment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.