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US 10,717,520 B2Granted
Shock strut with integral shrink piston actuator
AssigneeGoodrich Corporation
InventorWilliam E. Luce
Life of this patent
Estimating the term…
Abstract
A shock strut may comprise a strut cylinder, a strut piston operatively coupled to the strut cylinder, a shrink piston disposed at least partially within the strut cylinder, and a shrink chamber at least partially defined by the shrink piston. The shrink piston may comprise a shrink piston head, a sleeve extending from the shrink piston head, and a mechanical stop. A hydraulic fluid may be moved into the shrink chamber to compress the shrink piston and the strut piston into the strut cylinder to reduce an overall length of the shock strut.
Claims24
A shock strut, comprising:
- a strut cylinder;
- a strut piston operatively coupled to the strut cylinder;
- a shrink piston disposed partially within and partially extending from and open end of the strut cylinder;
- and
- a shrink chamber at least partially defined by the shrink piston;
- wherein the shrink piston comprises:
- a shrink piston head;
- a sleeve extending from the shrink piston head;
- and
- a first mechanical stop.
7 more elements
A shock strut arrangement, comprising:
- an aircraft hydraulic system;
- a valve in fluid communication with the aircraft hydraulic system;
- and
- a shock strut, comprising:
- a strut cylinder;
- a strut piston operatively coupled to the strut cylinder;
- a shrink piston disposed partially within and partially extending from and open end of the strut cylinder;
- a shrink chamber at least partially defined by the shrink piston;
- and
- a recoil chamber at least partially defined by the shrink piston;
- wherein the shrink chamber is in fluid communication with the valve.
8 more elements
A method for shrinking a shock strut, the shock strut comprising:
- a strut cylinder;
- a strut piston operatively coupled to the strut cylinder;
- a shrink piston disposed partially within and partially extending from and open end of the strut cylinder;
- a shrink chamber at least partially defined by the shrink piston;
- and
- a recoil chamber at least partially defined by the shrink piston;
- wherein the shrink chamber is in fluid communication with the valve;
- the method comprising:
- and
- moving a fluid into the shrink chamber, wherein the shock strut shrinks in response to the moving.
7 more elements
A shock strut, comprising:
- a strut cylinder;
- a strut piston operatively coupled to the strut cylinder;
- a shrink piston disposed at least partially within the strut cylinder;
- and
- a shrink chamber at least partially defined by the shrink piston;
- wherein the shrink piston comprises:
- a shrink piston head;
- a sleeve extending from the shrink piston head;
- and
- a first mechanical stop,
- wherein the strut piston comprises a second mechanical stop configured to mechanically engage the shrink piston in response to the strut piston compressing into the strut cylinder.
8 more elements
A shock strut, comprising:
- a strut cylinder;
- a strut piston operatively coupled to the strut cylinder;
- a shrink piston disposed at least partially within the strut cylinder, wherein the shrink piston comprises a shrink piston head, a sleeve extending from the shrink piston head, and a first mechanical stop;
- a shrink chamber at least partially defined by the shrink piston;
- an upper bearing disposed between the strut cylinder and the strut piston, wherein the shrink piston head is disposed between the strut cylinder and the strut piston;
- and
- a shrink chamber closure disposed between the strut cylinder and the shrink piston.
4 more elements
A shock strut arrangement, comprising:
- an aircraft hydraulic system;
- a valve in fluid communication with the aircraft hydraulic system;
- and
- a shock strut, comprising:
- a strut cylinder;
- a strut piston operatively coupled to the strut cylinder;
- a shrink piston disposed at least partially within the strut cylinder;
- a shrink chamber at least partially defined by the shrink piston;
- a recoil chamber at least partially defined by the shrink piston;
- a first seal configured to seal the recoil chamber;
- a second seal configured to seal the shrink chamber;
- and
- a vent orifice disposed in the shrink piston, the vent orifice comprising an inlet disposed between the first seal and the second seal,
- wherein the shrink chamber is in fluid communication with the valve.
11 more elements
A shock strut arrangement, comprising:
- an aircraft hydraulic system;
- a valve in fluid communication with the aircraft hydraulic system;
- and
- a shock strut, comprising:
- a strut cylinder;
- a strut piston operatively coupled to the strut cylinder;
- a shrink piston disposed at least partially within the strut cylinder, the shrink piston comprises a shrink piston head, a sleeve extending from the shrink piston head, and a mechanical stop extending from the sleeve;
- a shrink chamber at least partially defined by the shrink piston;
- and
- a recoil chamber at least partially defined by the shrink piston;
- wherein the shrink chamber is in fluid communication with the valve.
8 more elements
Dependencies are inferred from the claim text.