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:
Sep. 17, 2024
Filed:
May. 17, 2023
Applicant:
Epic Lift Systems, Houston, TX (US);
Inventors:
Robert G. Roycroft, Houston, TX (US);
Shannon Freeman, Tomball, TX (US);
Assignee:
Epic Lift Systems, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 34/14 (2006.01);
U.S. Cl.
CPC ...
E21B 34/142 (2020.05);
Abstract
Described herein are embodiments of systems and apparatuses that include a dart and/or a clutch for a dart plunger. In an exemplary embodiment, the dart plunger includes a dart adapted to move between a first position and a second position and also between a maximum closed position and a minimum closed position. Varying diameters of the dart, and/or the opening in which the clutch is retained, enable the clutch to variably retard movement of the dart between its first, second, maximum, and minimum positions.