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:
Oct. 06, 2020
Filed:
Jan. 25, 2017
Applicant:
Warrior Rig Technologies Limited, Calgary, CA;
Inventor:
Allan Stewart Richardson, The Woodlands, TX (US);
Assignee:
Warrior Rig Technologies Limited, Calgary, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 19/16 (2006.01);
U.S. Cl.
CPC ...
E21B 19/164 (2013.01);
Abstract
A rotor carries a gripping mechanism operable to grip an elongated object such as a drill string section. The rotor is driven by one or more drive mechanisms comprising a flexible element such as a chain. The flexible element allows some relative motion of the rotor and the drive mechanism. The described apparatus has application in making and breaking connections between tubulars in subsurface drilling operations.