Hydraulic actuator for semi levered landing gear
AssigneeThe Boeing Company
InventorsGary M. Lindahl, Mitchell Loren Ray Mellor
Life of this patent
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Abstract
A device including a first hydraulic piston, a second hydraulic piston disposed within the first hydraulic piston, and a third hydraulic piston disposed within both the first hydraulic piston and the second hydraulic piston. The first, second, and third hydraulic pistons are contained within a common outer wall. A manifold is connected to the first, second, and third hydraulic pistons. The manifold is disposed relative to the first, second, and third hydraulic pistons such that a fluid moving in the manifold can control positions of the first, second, and third hydraulic pistons.
Claims19
A device comprising:
- a first hydraulic piston;
- a second hydraulic piston disposed within the first hydraulic piston;
- and
- a third hydraulic piston disposed within both the first hydraulic piston and the second hydraulic piston, the third hydraulic piston comprising a floating piston, and wherein the first, second, and third hydraulic pistons are contained within a common outer wall;
- and
- a manifold connected to the first, second, and third hydraulic pistons, the manifold disposed relative to the first, second, and third hydraulic pistons such that a fluid moving through the manifold can control positions of the first, second, and third hydraulic pistons.
A vehicle comprising:
- a fuselage;
- a wing connected to the fuselage;
- a landing gear assembly connected to at least one of the fuselage and the wing;
- and
- a hydraulic actuator connected to the landing gear assembly, wherein the hydraulic actuator comprises:
- a first hydraulic piston;
- a second hydraulic piston disposed within the first hydraulic piston;
- and
- a third hydraulic piston disposed within both the first hydraulic piston and the second hydraulic piston, the third hydraulic piston comprising a floating piston, and wherein the first, second, and third hydraulic pistons are contained within a common outer wall, the common outer wall including a guide tube configured to separate fluid volumes within chambers of the device;
- and
- a manifold connected to the first, second, and third hydraulic pistons, the manifold disposed relative to the first, second, and third hydraulic pistons such that a fluid moving in the manifold can control positions of the first, second, and third hydraulic pistons.
Dependencies are inferred from the claim text.