Center biased actuator

Patent metadata

Field	Value
Publication number	US-11565798-B2
Application number	US-202117322053-A
Country	US
Kind code	B2
Filing date	May 17, 2021
Priority date	Nov 16, 2017
Publication date	Jan 31, 2023
Grant date	Jan 31, 2023

Abstract

A center biased actuator having an outer cylinder, a slave cylinder linearly transposed within the outer cylinder, a rod assembly with a piston linearly transposed within the slave cylinder and a rod extending from the outer cylinder, one or more first dynamic seals arranged to act on a sidewall of the rod to inhibit hydraulic fluid leaking from the outer cylinder, one or more second dynamic seals arranged to act on a sidewall of the slave cylinder or an inner surface of the outer cylinder to inhibit hydraulic fluid leaking from the outer cylinder, and a gas chamber comprising a sealed expandable chamber containing gas. The expandable chamber is arranged to act on hydraulic fluid within the center biased actuator to bias the center biased actuator to assume an intermediate condition which lies between a compressed condition and an extended condition.

First claim

The invention claimed is:

1. A center biased actuator comprising:
an outer cylinder;
a slave cylinder arranged to be linearly transposed within the outer cylinder;
a rod assembly having a piston arranged to be linearly transposed within the slave cylinder and a rod extending from the outer cylinder;
one or more first dynamic seals arranged to act on a sidewall of the rod to inhibit hydraulic fluid leaking from the outer cylinder;
one or more second dynamic seals arranged t…

Assignees

• Safran Landing Systems Uk Ltd

Inventors

• Sharpe Peter

Classifications

• F15B11/123

  Mechanical Engineering · mapped topic

• F16F9/526

  Mechanical Engineering · mapped topic

• B64C25/34

  Operations & Transport · mapped topic

• B64C2025/008

  Operations & Transport · mapped topic

• F16F9/063

  Mechanical Engineering · mapped topic