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:
Oct. 25, 2011
Filed:
Feb. 28, 2008
Applicants:
Jørgen Hallundbaek, Graested, DK;
Sven Karsten Jensen, Stenløse, DK;
Thomas Sune Andersen, Helsingør, DK;
Inventors:
Jørgen Hallundbaek, Graested, DK;
Sven Karsten Jensen, Stenløse, DK;
Thomas Sune Andersen, Helsingør, DK;
Assignee:
Weltec A/S, Allerod, DK;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 29/08 (2006.01); E21B 43/11 (2006.01); E21B 10/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A drilling head, method of drilling, and use of the drilling head, for reboring a stuck valve or drilling into the formation downhole and, in particular a drilling tool having a drilling head and a driving unit. The drilling head includes a hole saw beside a drill bit for cutting out a piece from the stuck valve. A drilling system includes the drilling tool and a driving tool for moving the drilling tool downhole.