US 11,859,730 B2
Pressure actuator with biasing element
Alagarsamy Sundararajan, Sugarland, TX (US)
Assigned to SRI ENERGY, INC., Sugar Land, TX (US)
Filed by SRI Energy, Inc., Stafford, TX (US)
Filed on Jul. 12, 2021, as Appl. No. 17/372,616.
Application 17/372,616 is a continuation of application No. 16/791,019, filed on Feb. 14, 2020, granted, now 11,067,193.
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 2021/0341074 A1, Nov. 4, 2021
This patent is subject to a terminal disclaimer.
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 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.