Actuator
AssigneeSRI Energy, Inc.
InventorAlagarsamy Sundararajan
Life of this patent
Estimating the term…
Abstract
A valve actuator assembly having an actuator housing coupled to a bonnet and a housing lid. A hydraulic cylinder is positioned within the actuator housing and directly coupled to the bonnet. A piston is positioned within the hydraulic cylinder and coupled to a spring lifter assembly and a spring is positioned within the actuator housing and having a first end and a second end, the first end being coupled to a lower surface of the housing lid, and the second end being coupled to the spring lifter assembly. An operating stem is coupled to the piston and positioned in a channel extending through the bonnet to a valve body assembly.
Claims20
A system comprising:
- an actuator housing coupled to a bonnet and a housing lid;
- a cylinder within the actuator housing and coupled to the bonnet;
- a port to fluidly couple the cylinder to a hydraulic fluid source;
- a piston within the cylinder and coupled to a shelf;
- a spring within the actuator housing and having first and second spring ends, the first spring end coupled to a surface of the housing lid and the second spring end coupled to the shelf;
- an operating stem coupled to the piston, positioned in a channel, extending through the bonnet;
- a gate valve including a gate, the gate being coupled to the operating stem.
A valve actuator system comprising:
- an actuator housing coupled to a bonnet and a housing lid;
- a cylinder within the actuator housing and coupled to the bonnet;
- a port to fluidly couple the cylinder to a hydraulic fluid source;
- a piston within the cylinder and coupled to a linkage;
- a spring within the actuator housing and having first and second spring ends, the first spring end coupled to a surface of the housing lid and the second spring end coupled to the linkage;
- an operating stem coupled to the piston, positioned in a channel, extending through the bonnet;
- and
- a gate valve including a gate, the gate being coupled to the operating stem.
A valve actuator system comprising:
- an actuator housing coupled to a bonnet and a housing lid;
- a cylinder in the actuator housing and coupled to the bonnet;
- a port to fluidly couple the cylinder to a hydraulic fluid source;
- a piston in the cylinder and coupled to a means for compressing a spring;
- the spring, wherein the spring is in the actuator housing and has first and second spring ends, the first spring end coupled to a surface of the housing lid and the second spring end coupled to the means for compressing a spring;
- an operating stem coupled to the piston, positioned in a channel, extending through the bonnet;
- and
- a gate valve including a gate, the gate being operatively coupled to the operating stem.
Dependencies are inferred from the claim text.