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:
Mar. 05, 2024
Filed:
Aug. 31, 2021
Applicant:
Weatherford Technology Holdings, Llc, Houston, TX (US);
Inventors:
Michael Henke, Hannover, DE;
Michael Kratzert, Hagenburg, DE;
Thomas Veit, Leipzig, DE;
Kevin Wood, Houston, TX (US);
Assignee:
WEATHERFORD TECHNOLOGY HOLDINGS, LLC, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 17/046 (2006.01); E21B 3/02 (2006.01); E21B 3/03 (2006.01); E21B 17/03 (2006.01); F16D 7/00 (2006.01); F16L 37/23 (2006.01);
U.S. Cl.
CPC ...
E21B 17/046 (2013.01); E21B 3/022 (2020.05); E21B 3/03 (2013.01); E21B 17/03 (2013.01); F16D 7/005 (2013.01); F16L 37/23 (2013.01);
Abstract
A drive unit of a top drive system includes a drive stem having a plurality of ports from an exterior thereof to an interior thereof. A plurality of sliding coupling members is disposed in the ports. A coupling collar encircles the drive stem and has actuation surfaces and recessed surfaces on an interior thereof, wherein the recessed surfaces align with the ports when the coupling collar is in a first position, and the actuation surfaces align with the ports when the coupling collar is in a second position.