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:
Dec. 04, 2012
Filed:
Jun. 08, 2009
Applicants:
Erwin Emil Stoetzer, Aichach, DE;
Werner Josef Harthauser, Wertingen, DE;
Inventors:
Erwin Emil Stoetzer, Aichach, DE;
Werner Josef Harthauser, Wertingen, DE;
Assignee:
Bauer Maschinen GmbH, Schrobenhausen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 7/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A drilling rig and a drilling method, in which the drilling element is caused to rotate and is displaced along a mast by means of a drilling drive, which drilling element has a continuous screw auger disposed below the drilling drive, and an extension, which is connected to the continuous screw auger and extends upwardly through the drilling drive. A displacement head is disposed between the continuous screw auger and the extension and is adapted to force earth material into the wall of a bore hole.