Hydraulic device of control device, such as blade pitch-change device

The invention relates to a hydraulic device (100) comprising a body (10), a piston rod (20) actuated by a pressurized hydraulic fluid, and a first drainage channel (35) for externally draining an internal leakage of a hydraulic fluid in the device (100). The device is characterized in that the devic...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	LAVIE ALAIN FRANCOIS JEAN, BRETTES FREDERIC
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	AEROPLANES AIRCRAFT AVIATION BLASTING COSMONAUTICS DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR FLUID-PRESSURE ACTUATORS FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS HEATING HELICOPTERS HYDRAULICS OR PNEUMATICS IN GENERAL LIGHTING MECHANICAL ENGINEERING PERFORMING OPERATIONS SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	The invention relates to a hydraulic device (100) comprising a body (10), a piston rod (20) actuated by a pressurized hydraulic fluid, and a first drainage channel (35) for externally draining an internal leakage of a hydraulic fluid in the device (100). The device is characterized in that the device comprises a second drainage channel (37) for externally draining the internal leakage of the hydraulic fluid in the device (100), said first (35) and second (37) channels being oriented in two different directions and each of the channels (35, 37) communicating at one of the ends thereof inside the body (10) of the device (100).