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:
Jan. 07, 2014
Filed:
Sep. 21, 2009
Applicant:
Timothy W. Ledbetter, Sachse, TX (US);
Inventor:
Timothy W. Ledbetter, Sachse, TX (US);
Assignee:
Atlas Copco Drilling Solutions LLC, Garland, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 31/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
A drilling machine includes a feed cable system which operatively couples a rotary head to a tower. The feed cable system includes first and second pull up cables and an equalizer bar, wherein the equalizer bar is coupled to the first and second pull up cables. The equalizer bar drives the rotary head to be held in a level position so that it is restricted from tilting. The drilling machine includes a slack take up device which couples the equalizer bar to the tower. The slack take up device is repeatably moveable between extended and retracted conditions.