The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 14, 2025
Filed:
Aug. 25, 2020
Airbus Operations Limited, Bristol, GB;
AIRBUS OPERATIONS LIMITED, Bristol, GB;
Abstract
An aircraft hydraulic actuation system for retracting an aircraft landing gear. The actuation system includes a supply line arranged to carry hydraulic fluid pressurised by a pump, a return line arranged to return hydraulic fluid to a reservoir, and a hydraulic actuator. In a first mode of operation, a first chamberof the actuatoris supplied with pressurised hydraulic fluid from the supply line such that a pistonis moved in a first direction so as to move a load such as a landing gear. In a second mode of operation, the first chamberis taken out of fluid communication with the supply line and a second chamberis in fluid communication with the return line, such that the pistonis able to be moved under the influence of the load, for example when the landing gear extends under gravity.