The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 12, 2022
Filed:
Dec. 12, 2018
Fmc Kongsberg Subsea As, Kongsberg, NO;
Simen Landa, Oslo, NO;
Heyn Halfdan Magnus, Kongsberg, NO;
Stig Fredrik Mathisen, Kongsberg, NO;
Espen Rinde Brauti, Ulefoss, NO;
FMC Kongsberg Subsea AS, Kongsberg, NO;
Abstract
The following invention relates to a subsea actuator () for actuating a subsea rotating component (); comprising: a first biasing element (); a motor (); a holding element () configured to receive an input force; a rotatable stem () operatively connectable to the component; a force transmitting arrangement () connectable to the first biasing clement () and the holding element (); a first connection which in a first mode is configured to lock the stem () in a rotatable engagement with the motor () and in a second mode is configured to unlock the stem () from the rotatable engagement with the motor () and allow the stem () to be influenced by the first biasing element (); wherein the first biasing element () and the stem () are releasably connected via the force transmitting arrangement (), such that when the first biasing element () and the stem () are released from each other, the first biasing element () is configured to be pre-tensioned to a position representing a first pre-tensioned position of the actuator () without operating the stem (); the holding element () is configured to exert a holding force on the force transmitting arrangement () and the first biasing element () in the first pre-tensioned position; and wherein, when the first biasing element () and the stem () are connected and the first biasing element () is pre-tensioned, the first connection is in the first mode such that the motor () is configured to operate the stem () to a position representing a second pre-tensioned position of the actuator (); wherein, in the second pre-tensioned position, upon loss of input force to the holding element (), the holding element () is configured to release its holding force on the force transmitting arrangement () and the first biasing element (), thereby the first connection is unlocked to its second mode, such that the pre-tensioned first biasing element () is released and rotates the stent () to a position representing a release position of the actuator ().