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US 2024/0102464 A1Published application
Center rod plunger with clutch assembly
AssigneeEpic Lift Systems
InventorsRobert G. Roycroft, Shannon S. Freeman
Life of this patent
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Abstract
Described herein are embodiments of systems, apparatuses, and methods that include a center rod plunger, wherein movement of the center rod between an open and a closed position is at least partially controlled by a clutch. The center rod has a shaft whose diameter may vary such that the clutch imparts a corresponding varying degree of friction on the center rod and such that less friction is imparted when the center rod is in its open and/or closed position.
Claims13
A center rod plunger assembly for removing liquids in a well, said assembly comprising:
- a body have a bore there-through;
- a center rod mounted in the bore to move between an open position and a closed position, where flow from the well travels through at least a portion of the bore in the open position, and flow from the well does not travel through at least a portion of the bore in the closed position;
- a clutch receptacle in said bore;
- and
- a clutch mounted in the clutch receptacle;
- wherein said clutch interfaces with the center rod to retard movement of the center rod between its open position and its closed position by exerting a frictional force on the center rod.
3 more elements
Dependencies are inferred from the claim text.