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:
Mar. 08, 2022
Filed:
May. 12, 2020
Safran Landing Systems, Velizy-Villacoublay, FR;
Jean-Baptiste Kamis, Moissy-Cramayel, FR;
Jean-Charles Roger, Moissy-Cramayel, FR;
SAFRAN LANDING SYSTEMS, Velizy Villacoublay, FR;
Abstract
The invention relates to a hydraulic actuator comprising a cylinder () in which a piston () secured to a rod () is mounted so as to slide in a sealed manner in order to delimit in the cylinder a hydraulic extension chamber () and a hydraulic retraction chamber () that are connected to respective ports, the hydraulic actuator comprising means for slowing the piston when the piston approaches a retracted position. According to the invention, the slowing means comprise first and second hydraulic lines () extending between the extension port and the extension chamber, the first hydraulic line comprising a seat () while the piston bears a retractable finger () having an end () that comes to bear against the seat in order to close the first hydraulic line () when the piston approaches the retracted position, such that only the second hydraulic line () remains open while the piston completes its travel towards the retracted position. Landing gear and aircraft comprising such an actuator.