Fluid operated actuator including a bleed port
AssigneeNorgren Limited
InventorRoger Studer
Life of this patent
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Abstract
A fluid operated actuator (100) is provided. The fluid operated actuator (100) includes a cylinder body (101) and a piston (102) movable within the cylinder body (101). The piston (102) defines a first chamber (105) and a second chamber (106). The fluid operated actuator (100) can include a fluid inlet (107) formed in the first chamber (105). A bleed port (110) can be formed to provide fluid communication between the first chamber (105) and the second chamber (106).
Claims16
A fluid operated actuator (100), comprising:
- a cylinder body (101);
- a piston (102) movable within the cylinder body (101) between a first position and a second position, the piston (102) defining a first chamber (105) and a second chamber (106);
- a fluid inlet (107) formed in the first chamber (105);
- a bleed port (110) providing fluid communication between the first chamber (105) and the second chamber (106);
- a striking pin (103) positioned within the second chamber (106);
- and
- a biasing member (130) coupling the striking pin to the piston (102), the biasing member (130) being configured to pull the striking pin (103) towards the second chamber (106).
A method for controlling a fluid operated actuator including a piston movable within a cylinder and defining a first chamber and a second chamber, an inlet formed in the first chamber, and a bleed port providing fluid communication between the first chamber and the second chamber, the method comprising the steps of:
- pressurizing the first chamber through the inlet;
- actuating the piston away from a first position towards a second position;
- bleeding at least some of the pressure in the first chamber into the second chamber through the bleed port as the piston is actuated towards the second position;
- and
- retracting a striking pin towards the second chamber using a biasing member as the piston moves from the second position towards the first position.
Dependencies are inferred from the claim text.