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:
Jun. 07, 2011
Filed:
Nov. 13, 2006
Applicant:
Franz-josef Püttmann, Lennestadt, DE;
Inventor:
Franz-Josef Püttmann, Lennestadt, DE;
Assignee:
Tracto-Technik GmbH, Lennestadt, DE;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 17/03 (2006.01); E21B 17/043 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention relates to an earth boring device including a housing which has at least one portion with an inner thread, and a threaded element which has a corresponding outer thread, wherein the threaded element is slotted and has a receptacle for a securing element which increases the outer diameter of the threaded element and the contact pressure of the threaded connection between threaded element and housing, when inserted in the receptacle.