Activation system for pipeline plug
AssigneeSafe Isolations LLC
InventorsPaul GILES, Humon Glenn FARDSALEHI
Life of this patent
Estimating the term…
Abstract
A pipeline plug includes a plug body. The plug body includes an outer housing. The interior of the outer housing defines a pressure vessel. The pipeline plug includes a pressure head coupled to the plug body, a seal assembly, a gripper assembly, a movable head, and an actuation mechanism. The actuation mechanism includes a leadscrew, the leadscrew coupled to the movable head. The actuation mechanism includes a captive nut, the captive nut positioned within the pressure vessel. The actuation mechanism includes a motor, the motor operatively coupled to the captive nut and adapted to rotate the captive nut.
Claims14
A pipeline plug comprising:
- a plug body, the plug body including an outer housing, an interior of the outer housing defining a pressure vessel;
- a pressure head coupled to the plug body;
- a seal assembly;
- a gripper assembly;
- a movable head;
- an actuation mechanism, the actuation mechanism including:
- a leadscrew, the leadscrew coupled to the movable head;
- a captive nut, the captive nut positioned within the pressure vessel;
- and
- a motor, the motor operatively coupled to the captive nut and adapted to rotate the captive nut;
- a brake assembly, the brake assembly including a brake stator coupled to the outer housing and a brake rotor coupled to a rotating component of the actuation mechanism;
- and
- a brake failsafe system, the brake failsafe system including:
- a brake release cylinder formed in the outer housing;
- a brake release piston positioned within the brake release cylinder;
- and
- a brake release leg, the brake release leg coupled to the brake release piston, the brake release leg engaging the brake assembly such that movement of the brake release piston due to differential pressure across the pipeline plug causes the brake assembly to disengage.
(canceled)
(canceled)
A brake failsafe system for a pipeline plug including a brake assembly, the brake failsafe system comprising:
- a brake release cylinder formed in an outer housing of the pipeline plug;
- a brake release piston positioned within the brake release cylinder;
- and
- a brake release leg, the brake release leg coupled to the brake release piston, the brake release leg engaging the brake assembly such that movement of the brake release piston due to differential pressure across the pipeline plug causes the brake assembly to disengage.
Dependencies are inferred from the claim text.