Unitary body bypass plunger and valve cage
AssigneeFlowco Production Solutions, LLC
InventorsGarrett S. Boyd, Mitchell A. Boyd
Life of this patent
Estimating the term…
Abstract
A bypass plunger combines a unitary or one-piece hollow body-and-valve cage, retains a dart valve within the valve cage portion of the hollow body using a threaded retaining nut secured by crimple detents. A series of helical grooves surround the central portion of the outer surface of the hollow body of the plunger to control spin during descent. A canted-coil-spring disposed within the retaining nut functions as a clutch. The valve cage includes ports that may be configured to control flow through the plunger during ascent. Other embodiments include clutch assemblies using canted-coil springs with split bobbins, and valve stems surfaced to achieve specific functions.
Claims10
A bypass plunger, comprising:
- a hollow plunger body and valve cage formed as one integrated piece having first and second ends, the valve cage for enclosing a dart valve and a split bobbin clutch assembly formed at the second end thereof and having first threads at the distal end thereof for receiving a retaining device for retaining the dart valve, a partition nut the partition nut adjustably spacing the dart valve and the split bobbin clutch assembly within the valve cage;
- wherein
- the dart valve having a valve head connected to a valve stem, the dart valve reciprocatingly disposed within the valve cage such that the valve head is oriented toward a valve seat formed within the hollow body;
- and
- the retaining device having second threads formed on the outer surface of one end for threading the retaining device into the first threads of the valve cage.
Dependencies are inferred from the claim text.