Actuation device

Details Actuation device Actuation device

2007-03-20

2010-02-09

Leslie, Michael (Department: 3745)

Power plants

Pressure fluid source and motor

Pump means moves motive fluid from one chamber to an...

C060S328000, C060S475000

Reexamination Certificate

active

07658066

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.

REFERENCES:
patent: 4529362 (1985-07-01), Ichiryu et al.
patent: 4630441 (1986-12-01), Chamberlain
patent: 4850812 (1989-07-01), Voight
patent: 5109672 (1992-05-01), Chenoweth et al.
patent: 6796120 (2004-09-01), Franchet et al.
patent: 2538078 (1976-03-01), None
patent: 69404561 (1998-01-01), None
patent: 98/11358 (1998-03-01), None

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