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. 17, 2012
Filed:
Jun. 25, 2008
Applicant:
Karluf Hagen, Randaberg, NO;
Inventor:
Karluf Hagen, Randaberg, NO;
Assignee:
M-I Swaco Norge AS, Stavanger, NO;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 37/00 (2006.01); E21B 31/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
A magnet fixing device in a cleaning tool () for use in a borehole where the cleaning tool () is externally provided with at least one projection () and at least two recesses () and where at least one magnet () is disposed in the projection (), as the magnetic field from the at least one magnet () is active in that it is arranged to at least attract a magnet sensitive material () into a recess () or hold the material () in the recess (), and where the magnet () runs through the projection (), whereby the one magnet () pole is active in a first recess () while the other magnet () pole is active in a second recess ().