Patent ID: 11859730
Assignee: SRI ENERGY, INC.
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 18:
19. 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.