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:
Jul. 01, 2014
Filed:
Dec. 20, 2010
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 hammer assembly is actuated to drive an earth bit through a formation. The hammer assembly includes a piston, and a flow control tube which extends through the piston. The flow control tube includes drive and return guide ports. The piston is repeatably moveable relative to the drive and return guide ports in response to a fluid flow through the flow control tube. In this way, the hammer assembly is actuated.