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SPACE PATENTS BY
Aerospace Assignees
Aerospace Inventors
Time Lines

Architecture for a hydraulic system for operating aircraft landing gear

Invented by: David Leutard
Chatillon, FR

Eric Felemez
Crespieres, FR

Sebastien Fremiot
Boulogne, FR

Originally Assigned to: Messier-Bugatti
Velizy Villacoublay, FR
[Now assigned to . . .]

Issued:2011-10-04
Filed:2007-10-17
Application No:11873590
Examined by:Swiatek; Rob

The invention relates to an architecture for a hydraulic system for operating the landing gear of an aircraft including at least one pressure source and at least one hydraulic return, the system having a hydraulic circuit comprising a first hydraulic line that, when pressurized, causes the landing gear to be lowered, and a second hydraulic line that, when pressurized, causes the landing gear to be raised, said lines being selectively pressurized by means of a hydraulic distribution member comprising at least an isolation valve and a selector for putting one of the lines into communication with pressure and the other line into communication with return. According to the invention, the architecture includes passive bypass means for bypassing the selector, said means being disposed between the second line and an admission line that extends between the isolation valve and the selector, and forced return connection means for forcing the isolation valve to isolate the pressure circuit of the aircraft and connect the admission line to return.

[pdf] U.S. Pat. No. 8,028,954

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This information is part of a study by Oasis Global, Inc. of all space inventions filed at the United States Patent and Trademark Office, and is provided for informational purposes only. It is not an endorsement of any particular assignee, inventor or invention. Although Peter A. Koziol represents inventors and assignees of space inventions he does not represent all of the inventors and assignees listed. The prosecuting attorney agent or firm for each patent is identified by the United States Patent and Trademark Office in the patent specfication, which can be viewed by clicking on the patent image or downloading the patent document. For more information regarding Mr. Koziol's background and experience, or to learn more about space inventions, please contact Mr. Koziol.

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