US 12,359,743 B2
Actuator
Alagarsamy Sundararajan, Sugarland, TX (US)
Assigned to SRI Energy, Inc., Sugar Land, TX (US)
Filed by SRI Energy, Inc., Sugar Land, TX (US)
Filed on Dec. 20, 2023, as Appl. No. 18/390,203.
Application 18/390,203 is a continuation of application No. 17/372,616, filed on Jul. 12, 2021, granted, now 11,859,730.
Application 17/372,616 is a continuation of application No. 16/791,019, filed on Feb. 14, 2020, granted, now 11,067,193, issued on Jul. 20, 2021.
Application 16/791,019 is a continuation of application No. 16/117,864, filed on Aug. 30, 2018, granted, now 10,563,790, issued on Feb. 18, 2020.
Application 16/117,864 is a continuation of application No. 15/726,817, filed on Oct. 6, 2017, granted, now 10,066,757, issued on Sep. 4, 2018.
Application 15/726,817 is a continuation of application No. 14/486,559, filed on Sep. 15, 2014, granted, now 9,841,117, issued on Dec. 12, 2017.
Claims priority of provisional application 61/878,838, filed on Sep. 17, 2013.
Prior Publication US 2024/0125407 A1, Apr. 18, 2024
Int. Cl. F16K 31/122 (2006.01); F16K 3/02 (2006.01)
CPC F16K 31/1221 (2013.01) [F16K 3/0254 (2013.01); F16K 31/122 (2013.01); Y10T 137/6072 (2015.04)] 20 Claims
OG exemplary drawing
 
1. 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.