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:
Feb. 09, 2010
Filed:
Jul. 18, 2003
Applicant:
Michael Mohrmann, Adenstedt, DE;
Inventor:
Michael Mohrmann, Adenstedt, DE;
Assignee:
Wirth Maschinen-und Bohrgerate-Fabrik GmbH, Erkelenz, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 10/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A device for driving boreholes in the ground, having a rotationally driven main shaft with a shaft journal whose axis (B) forms an acute angle with respect to the axis (A) of the main shaft. A drill head is mounted such that it can rotate about the axis (B) of the shaft journal and has a circumferential region which runs on a complementary circumferential region, wherein the complementary circumferential region can be set rotating.