Pressure actuator with biasing element
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 valve actuator assembly comprising:
- an actuator housing configured to couple to both a bonnet and a housing lid;
- a cylinder included in the actuator housing and configured to couple to the bonnet;
- a port to fluidly couple the cylinder to a hydraulic fluid source;
- a piston included in the cylinder and coupled to a shelf;
- a spring included in the actuator housing and having first and second spring ends, the first spring end being configured to couple to a surface of the housing lid and the second spring end being coupled to the shelf;
- and
- an operating stem coupled to the piston, included in a channel, configured to extend through the bonnet, and configured to couple to a valve body assembly.
A valve actuator system comprising:
- an actuator housing to couple to both a bonnet and a housing lid;
- a cylinder, included in the actuator housing, to couple to the bonnet;
- a port to fluidly couple the cylinder to a hydraulic fluid source;
- a piston included in the cylinder and coupled to a linkage;
- a spring included in the actuator housing and having first and second spring ends, the first spring end to couple to a surface of the housing lid and the second spring end coupled to the linkage;
- and
- an operating stem coupled to the piston and included in a channel, wherein the operating stem is to extend through the bonnet and couple to a valve body assembly.
A valve actuator system comprising:
- an actuator housing to couple to both a bonnet and a housing lid;
- a cylinder, included in the actuator housing, to couple to the bonnet;
- a port to fluidly couple the cylinder to a hydraulic fluid source;
- a piston included in the cylinder and coupled to a means for compressing a spring;
- the spring, wherein the spring is included in the actuator housing and has first and second spring ends, the first spring end to couple to a surface of the housing lid and the second spring end coupled to the means for compressing a spring;
- and
- an operating stem coupled to the piston and included in a channel, wherein the operation stem is to extend through the bonnet and couple to a valve body assembly.
Dependencies are inferred from the claim text.