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:
Aug. 19, 2008
Filed:
Mar. 04, 2004
Arnold R. Law, Garland, TX (US);
Ajay Kumar, Garland, TX (US);
Arnold R. Law, Garland, TX (US);
Ajay Kumar, Garland, TX (US);
Atlas Copco Drilling Solutions Inc., Garland, TX (US);
Abstract
A telescoping sub () for mining operations and the like. The telescoping sub () includes a rotor () portion coupleadle to the rotary head of a drilling rig, and a stator () portion that is coupleable to a drill rod. The rotor () portion is slideadly coupled to the stator () portion and is moveable with respect thereto between an extended position and a retracted position. With the telescoping sub () in the retracted position, the drilling rig is operated to drill to a first depth. The drilling rig is then operated to move the rotor () portion to the extended position, and the drilling rig is operated to drill to a second depth that is greater than the first depth.