US 11,867,263 B2
Linear actuators, motor assemblies, and methods to actuate a device or load
Shao Hwa Lee, Singapore (SG); and Bruce Edward Scott, Carrollton, TX (US)
Assigned to Halliburton Energy Services, Inc., Houston, TX (US)
Filed by Halliburton Energy Services, Inc., Houston, TX (US)
Filed on May 4, 2022, as Appl. No. 17/736,489.
Prior Publication US 2023/0358300 A1, Nov. 9, 2023
Int. Cl. E21B 23/00 (2006.01); F16H 25/22 (2006.01); E21B 34/06 (2006.01); F16H 25/20 (2006.01)
CPC F16H 25/2204 (2013.01) [E21B 34/066 (2013.01); F16H 2025/204 (2013.01); F16H 2025/2043 (2013.01); F16H 2025/2062 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A linear actuator, comprising:
a piston having a piston slot and configured to:
linearly shift from a first piston position to a second piston position; and
rotate as the piston shifts towards the first piston position;
an activating lever comprising:
a shoulder that the piston engages as the piston shifts to the second piston position,
wherein the activating lever is configured to shift from a first activating lever position to a second activating lever position after piston engages the shoulder; and
a retractable rail configured to shift from a first retractable rail position downwards to a second retractable rail position, and comprising:
a retractable rail tab positioned in a groove of the piston slot as the piston shifts from the first piston position to the second piston position and while the retractable rail is in the first retractable rail position.