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:
Mar. 25, 2014
Filed:
Jan. 16, 2009
Applicant:
Per A. Vatne, Kristiansand, NO;
Inventor:
Per A. Vatne, Kristiansand, NO;
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 19/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
Clamping die () in a device for engagement with a cylindrical body (), which clamping die () includes a gripping surface () that is arranged to be able to extend in parallel with the center axis of the cylindrical body (), wherein a groove () is provided in each of two side surfaces () adjacent to the gripping surface () and in close proximity to the gripping surface (), said groove () extending substantially in parallel with the gripping surface ().