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. 15, 2013
Filed:
Aug. 05, 2009
Applicants:
Allan W. Rainey, Mansfield, TX (US);
James W. Langford, Granbury, TX (US);
Inventors:
Allan W. Rainey, Mansfield, TX (US);
James W. Langford, Granbury, TX (US);
Assignee:
Atlas Copco Secoroc, LLC, Grand Prairie, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 10/36 (2006.01); E21B 10/42 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method of boring through a formation includes providing a drilling machine and drill string and operatively coupling an earth bit to the drilling machine through the drill string. An air flow is provided through the drill string at an air pressure less than about one-hundred pounds per square inch (100 psi) and an overstrike force is applied to the earth bit, wherein the overstrike force is less than about five foot-pounds per square inch (5 ft-lb/in).