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:
May. 25, 2021
Filed:
Dec. 13, 2018
Applicant:
The Charles Machine Works, Inc., Perry, OK (US);
Inventors:
Greg L. Slaughter, Jr., Perry, OK (US);
Cody L. Sewell, Perry, OK (US);
Assignee:
The Charles Machine Works, Inc., Perry, OK (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 7/06 (2006.01); E21B 7/04 (2006.01); E21B 17/18 (2006.01); E21B 17/042 (2006.01); E21B 7/20 (2006.01); E21B 17/046 (2006.01); E21B 7/00 (2006.01);
U.S. Cl.
CPC ...
E21B 7/046 (2013.01); E21B 7/002 (2013.01); E21B 7/062 (2013.01); E21B 7/20 (2013.01); E21B 17/042 (2013.01); E21B 17/046 (2013.01); E21B 17/18 (2013.01);
Abstract
A dual member drill string having a plurality of dual member drill string sections for use in horizontal directional drilling operations. Each drill string section having an outer member and an inner member that is rotatable independently of the outer member. The outer member has a pin end and a box end. The inner member has a pin end disposed within the pin end of the outer member and a box end disposed within the box end of the outer member.