US 12,140,247 B2
Electrical actuator
Parth Dilip Pathak, Cypress, TX (US); Federico Davila, Houston, TX (US); and Augusto Arcelaschi, Houston, TX (US)
Assigned to OneSubsea IP UK Limited, London (GB)
Appl. No. 18/255,945
Filed by OneSubsea IP UK Limited, London (GB)
PCT Filed Dec. 3, 2021, PCT No. PCT/US2021/061732
§ 371(c)(1), (2) Date Jun. 5, 2023,
PCT Pub. No. WO2022/120123, PCT Pub. Date Jun. 9, 2022.
Claims priority of provisional application 63/199,032, filed on Dec. 3, 2020.
Prior Publication US 2024/0044417 A1, Feb. 8, 2024
Int. Cl. F16K 31/50 (2006.01); F16H 25/20 (2006.01); F16H 25/24 (2006.01); H01F 7/08 (2006.01)
CPC F16K 31/508 (2013.01) [F16H 25/205 (2013.01); F16H 25/2454 (2013.01); H01F 7/081 (2013.01); F16H 2025/2075 (2013.01); F16H 2025/2081 (2013.01); F16H 2025/2087 (2013.01); F16H 2025/209 (2013.01); F16H 2025/2093 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system comprising:
an electric actuator, comprising:
an actuation stem;
a screw assembly coupled to the actuation stem, wherein the screw assembly comprises a male screw portion coupled to a female screw portion;
an electric drive coupled to the screw assembly, wherein the electric drive is configured to move the screw assembly to move the actuation stem;
a lock configured to hold a position of the actuation stem when not driving movement of the actuation stem; and
an override coupled to the screw assembly and configured to enable an override of the lock to move the screw assembly without the electric drive,
wherein the override and the electric drive are disposed in a series arrangement,
wherein the override and the electric drive are coupled to a first gear assembly, the first gear assembly being coupled to the screw assembly,
wherein the first gear assembly comprises a worm gear engaged with a worm screw, and the override and the electric drive are separately coupled to the worm screw, and
wherein an engagement between the worm gear and the worm screw of the first gear assembly functions as the lock.