Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
February 9, 2010
Patent Application Number
11726178
Date Filed
March 20, 2007
Patent Primary Examiner
Patent abstract
The present invention relates to an actuation device for the actuating of an adjustment surface of an aircraft such as an elevator, a rudder or the like, of landing gear or another aircraft or surface vehicle actuator, comprising an electrohydraulic actuator having a servo control cylinder, a pump for pressure fluid action on the servo control cylinder as well as an electric motor for the actuation of the pump, with the electric motor having a liquid cooling. In accordance with the invention, the actuation device is characterized in that a leak flow of the pump is guided over a leak passage through the electric motor to cool the electric motor.
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