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. 02, 2010
Filed:
Jan. 16, 2006
Applicants:
Per Olav Haughom, Tonstad, NO;
Nils Reimers, Bjoa, NO;
Inventors:
Per Olav Haughom, Tonstad, NO;
Nils Reimers, Bjoa, NO;
Assignee:
Tomax AS, Stavanger, NO;
Primary Examiner:
Int. Cl.
CPC ...
E21B 17/07 (2006.01);
U.S. Cl.
CPC ...
Abstract
A torque converter for use in drilling with a rotating drill bit, the purpose of the torque converter being to absorb impacts and bring about an axial movement of the drill bit when the torque exceeds a predetermined value. For this purpose the torque converter is composed of two cylindrical string parts connected through the bearing elements. The string parts are connected to each other through helical elements in such a way that relative rotation of the two cylindrical string parts brings about axial movement, which unloads the drill bit.