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:
Nov. 24, 2020
Filed:
Oct. 26, 2018
Weatherford Technology Holdings, Llc, Houston, TX (US);
Clark E. Robison, Tomball, TX (US);
Jeffrey John Lembcke, Cypress, TX (US);
Victoria M. Pons, Katy, TX (US);
William Kevin Hall, Katy, TX (US);
John Edward Stachowiak, Jr., Houston, TX (US);
Benson Thomas, Pearland, TX (US);
Sean M. Christian, Fort Howard, MD (US);
Bryan A. Paulet, Spring, TX (US);
Hermann Basler, Parkland County, CA;
WEATHERFORD TECHNOLOGY HOLDINGS, LLC, Houston, TX (US);
Abstract
A long-stroke pumping unit includes a tower, a counterweight assembly movable along the tower, and a crown mounted atop the tower. A sprocket is supported by the crown and rotatable relative thereto. The counterweight is coupled to a belt. The pumping unit further includes a motor having a stator mounted to the crown and a rotor torsionally connected to the sprocket. A sensor is used to detect a position of the counterweight assembly. The pumping unit may include a dynamic control system for controlling a speed of a motor.