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. 02, 2021
Filed:
Dec. 05, 2018
Applicant:
Weatherford Technology Holdings, Llc, Houston, TX (US);
Inventors:
Igor Stankovic, Gehrden, DE;
Martin Helms, Burgdorf, DE;
Michael Schindel, Langenhagen, DE;
Thomas Kotschy, Burgdorf, DE;
Christian Kiess, Hannover, DE;
Assignee:
Weatherford Technology Holdings, LLC, Houston, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 19/07 (2006.01); E21B 19/10 (2006.01); E21B 19/20 (2006.01); E21B 19/087 (2006.01);
U.S. Cl.
CPC ...
E21B 19/07 (2013.01); E21B 19/10 (2013.01);
Abstract
A tubular handling assembly includes a mandrel; a plurality of gripping elements for gripping a tubular, the plurality of gripping elements coupled to and rotatable with the mandrel; one or more accumulators; a first actuator configured to supply fluid to the one or more accumulators; and a second actuator configured to receive fluid from at least one of the one or more accumulators and to actuate the plurality of gripping elements.